A method for preparing a wear-resistant coating for a cigarette maker cutter

Abstract

The application provides a cigarette machine cutter wear-resistant coating preparation method and belongs to the technical field of cigarette machine equipment. The method comprises the following steps: cleaning and pretreating the surface of the cigarette machine cutter; rough grinding the cleaned cigarette machine cutter to strengthen the adhesion of the coating; regionally covering the rough treated cigarette machine cutter and fixing the cigarette machine cutter on a target holder; putting the target holder with the cigarette machine cutter into a coating cavity to perform vacuumizing; using a pulse bias power supply to perform reverse splashing cleaning on the outer leakage base surface of the cigarette machine cutter; preparing and depositing a Ti buffer layer on the cigarette machine cutter; preparing and depositing a TiAlN coating on the cigarette machine cutter; keeping the temperature in the coating cavity constant to make the coating grow better; preparing an anti-sticking coating for the covered part of the cigarette machine cutter; polishing the cigarette machine cutter with the prepared coating; and the wear-resistant coating of the cigarette machine cutter prepared by the method can improve the service life of the cigarette machine cutter and the cigarette production efficiency.

Description

Technical Field

[0001] This invention belongs to the technical field of cigarette machine equipment, and more specifically, relates to a method for preparing a wear-resistant coating for cigarette machine blades. Background Technology

[0002] Currently, a conventional cigarette consists of a filter and a tobacco stick. The tobacco stick is usually wrapped in a layer of cigarette paper, and the tobacco and cigarette paper burn together when the cigarette is burned. With the advancement of tar reduction technology, the nicotine and tar content of cigarettes has gradually decreased, and the tar content of some slim cigarettes has been reduced to 6mg / cigarette.

[0003] A cigarette rolling machine is a machine that uses cigarette paper to roll tobacco into cigarettes. It is one of the most important pieces of machinery and equipment in cigarette production. Alloy cutters are an important component of cigarette rolling machines. They are usually installed on the drum of the cigarette rolling machine and are responsible for cutting cigarettes and filter rods during the cigarette production process.

[0004] Cigarette machine blades are consumable parts and are expensive. Continuous, uninterrupted cutting operations shorten their lifespan; frequent replacements not only increase production costs in the cigarette industry but also significantly impact cigarette output. Therefore, extending the lifespan of cigarette machine blades is crucial for cigarette production. Summary of the Invention

[0005] In view of this, the present invention provides a method for preparing a wear-resistant coating for cigarette machine blades, which can effectively improve the service life of cigarette machine blades and the efficiency of cigarette production.

[0006] This invention is implemented as follows:

[0007] This invention provides a method for preparing a wear-resistant coating for cigarette machine blades, comprising the following steps:

[0008] S10: Cleaning and pre-treatment of the surface of the cigarette machine blades;

[0009] S20: Roughly grind the cleaned cigarette machine blades to enhance the adhesion of the coating;

[0010] S30: Cover the roughened cigarette machine blades in the affected area and fix them on the target support;

[0011] S40: Place the target holder along with the cigarette machine blade into the coating chamber for vacuuming;

[0012] S50: Uses pulsed bias power supply to perform backsplash cleaning on the exposed substrate surface of cigarette machine blades;

[0013] S60: Preparation and deposition of a Ti buffer layer on the cigarette machine cutter;

[0014] S70: Preparation and deposition of TiAlN coating on cigarette machine blades;

[0015] S80: Maintains a constant temperature inside the coating chamber, allowing the coating to grow better;

[0016] S90: Preparation of an anti-stick coating for the part of the cigarette machine blade covering;

[0017] S100: Grinding and polishing the cigarette machine blades after the coating preparation is completed.

[0018] Based on the above technical solution, the method for preparing a wear-resistant coating for cigarette machine blades of the present invention can be further improved as follows:

[0019] Optionally, the specific steps for cleaning and pre-treating the surface of the cigarette machine blades include:

[0020] Step 1: Place the cigarette machine blades in a cleaning solvent to remove the oil and dirt from the surface of the cigarette machine blades;

[0021] Step 2: Immerse the cigarette machine blades in an ethanol solution for ultrasonic cleaning; remove the cleaning solvent and other impurities from the surface of the cigarette machine blades.

[0022] Step 3: Dry the surface of the cigarette rolling machine blades.

[0023] Furthermore, the specific steps of coarsely grinding the cleaned cigarette machine blades to enhance the adhesion of the coating include:

[0024] Step 1: Use an electric grinding wheel to grind the surface of the cigarette machine blades to remove any unevenness.

[0025] Step 2: Place the cigarette machine blades into the grinding device to grind and polish the cigarette machine blades and remove burrs from the blades;

[0026] Step 3: Apply uniform sandblasting to the surface of the cigarette machine blades to increase the surface roughness and facilitate the firm adhesion of the coating.

[0027] Furthermore, the specific steps for covering the roughened cigarette machine blades and fixing them to the target holder include:

[0028] Step 1: Divide the cigarette rolling machine blades into the cutting edge and the back of the blade;

[0029] Step 2: Apply concealer to the back of the blade and wait for it to dry completely;

[0030] Step 3: Secure the cigarette machine blade to the target holder using the clamping device on the target holder.

[0031] Furthermore, the specific steps of placing the target holder along with the cigarette machine blade into the coating chamber for vacuuming include:

[0032] Step 1: Place the target holder along with the cigarette machine blade into the coating chamber;

[0033] Step 2: Install the Ti and TiAlN targets at the corresponding positions on the target sites;

[0034] Step 3: Close all air supply and inlet valves in the coating chamber;

[0035] Step 4: Evacuate the coating chamber using a vacuum pump, bringing the back vacuum to 8×10⁻⁶. -4 Pa~2×10 - 4 Pa.

[0036] Furthermore, the specific steps for backsplash cleaning of the exposed substrate surface of the cigarette machine blade using a pulsed bias power supply include:

[0037] Step 1: Once the vacuum in the coating chamber reaches the set standard, introduce 40 sccm of pure argon gas.

[0038] Step 2: Adjust the air pressure inside the chamber to 2.5 Pa;

[0039] Step 3: Use a pulsed bias power supply to perform backsplash cleaning on the surface of the cigarette machine blade base. Apply a voltage of 600V and clean for 40 minutes.

[0040] Furthermore, the specific steps for preparing and depositing the Ti buffer layer on the cigarette machine blade include:

[0041] Step 1: Heat the inside of the coating chamber to 300℃;

[0042] Step 2: Sputter the Ti target for 20-30 seconds to remove impurities from the target surface;

[0043] Step 3: Adjust the internal air pressure of the coating chamber to 0.1-1 Pa and the output power to 50-100 W, and deposit the Ti buffer layer with pure Ar = 39 sccm.

[0044] Furthermore, the specific steps for preparing and depositing the TiAlN coating on the cigarette machine blade include:

[0045] Step 1: After the Ti buffer layer is deposited, adjust the internal temperature of the coating chamber to room temperature to 400℃;

[0046] Step 2: After the temperature is reached, sputter the TiAlN target for 30-60 seconds to remove impurities from the target surface;

[0047] Step 3: Adjust the internal air pressure of the coating chamber to 0.1-3 Pa, the power to 50-300 W, and the Ar:N2 ratio to 1:1 to 5:1 to deposit the TiAlN coating.

[0048] Furthermore, the specific steps for maintaining a constant temperature inside the coating chamber to allow for better coating growth include:

[0049] Step 1: Keep the air pressure, temperature and Ar:N2 atmosphere ratio constant inside the coating chamber for 20 minutes to ensure better coating adhesion;

[0050] Step 2: Cool the coating chamber at a rate of 8-10℃ / min. When the internal temperature of the coating chamber drops below 50℃, turn off the power and gas source, and the coating deposition is complete.

[0051] Step 3: Introduce air into the coating chamber, open the chamber door, and remove the target holder along with the cigarette machine blades.

[0052] Furthermore, the specific steps for preparing the anti-stick coating on the covering part of the cigarette machine blade include:

[0053] Step 1: Remove the cigarette machine blade with the strength coating prepared from the target holder;

[0054] Step 2: Peel off the hardened masking liquid from the back of the cigarette machine blade.

[0055] Step 3: Apply masking liquid to the cutting edge of the cigarette machine blade and wait for the masking liquid to dry completely.

[0056] Step 4: Secure the cigarette machine blades using the clamps at the top of the rotating tray;

[0057] Step 5: Move the rotating tray along with the cigarette machine blades onto the support platform of the water curtain equipment;

[0058] Step 6: Pour anti-stick coating paint into the spray gun, connect the air compressor, and spray the paint to cover the back of the exposed blade of the cigarette machine blade;

[0059] Step 7: Place the cigarette machine blades coated with the anti-stick coating into the curing box for curing;

[0060] Step 8: After curing, peel off the cured masking liquid from the cutting edge of the cigarette machine blade, and put the cigarette machine blade back into the coating chamber and heat it to 150-300℃ for baking to further help the anti-stick coating cure.

[0061] The cigarette machine blade includes a cutting edge and a backing edge. The cutting edge is coated with a strength coating, which includes a Ti buffer layer and a TiAlN coating. The backing edge is coated with an anti-stick coating. The strength coating is used to improve the wear resistance of the blade, extend its service life and reduce maintenance frequency. The anti-stick coating is used to reduce the adhesion and carbon buildup of cigarettes and other impurities on the blade surface, which helps to improve the production efficiency and stability of the cigarette machine and reduce downtime for cleaning and maintenance.

[0062] Compared with existing technologies, the beneficial effects of the method for preparing a wear-resistant coating for cigarette machine blades provided by this invention are as follows: In this invention, acetone solution is first used to ultrasonically clean away the oil stains on the surface of the cigarette machine blades, and then ethanol solution is used to ultrasonically clean away the residual acetone solution and other impurities on the surface of the cigarette machine blades. Subsequently, nitrogen gas is used for drying and further polishing. To obtain a suitable blade surface for coating before formal coating, backsplash cleaning is performed in the coating chamber to further remove impurities adhering to the surface of the cigarette machine blades. A Ti buffer layer and a TiAlN coating are sequentially deposited on the cigarette machine blades. After coating deposition, the blades are kept warm for a period of time to allow for better coating growth. By preparing a Ti buffer layer on the cutting edge of the cigarette machine blade, the residual stress between the blade substrate and the TiAlN coating is effectively reduced, enhancing their adhesion. By preparing a TiAlN wear-resistant coating, the cutting performance and service life of the cigarette machine blades during use are significantly improved. By further preparing an anti-stick coating on the blade back, the adhesion and carbon buildup of cigarettes and other impurities on the blade surface can be effectively reduced, which helps improve the production efficiency and stability of the cigarette machine and reduces downtime for cleaning and maintenance. Attached Figure Description

[0063] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0064] Figure 1 A flowchart of a method for preparing a wear-resistant coating for cigarette machine blades;

[0065] Figure 2 A schematic diagram of a wear-resistant coating structure for cigarette machine blades;

[0066] The attached diagram lists the components represented by each number as follows:

[0067] 10. Cutting edge; 11. Back of blade; 12. Strength coating; 13. Anti-stick coating; 14. Ti buffer layer; 15. TiAlN coating. Detailed Implementation

[0068] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0069] Example 1:

[0070] like Figure 1 The diagram shows a flowchart of a method for preparing a wear-resistant coating for cigarette machine blades provided by the present invention, including the following steps:

[0071] S10: Cleaning and pre-treatment of the surface of the cigarette machine blades;

[0072] S20: Roughly grind the cleaned cigarette machine blades to enhance the adhesion of the coating;

[0073] S30: Cover the roughened cigarette machine blades in the affected area and fix them on the target support;

[0074] S40: Place the target holder along with the cigarette machine blade into the coating chamber for vacuuming;

[0075] S50: Uses pulsed bias power supply to perform backsplash cleaning on the exposed substrate surface of cigarette machine blades;

[0076] S60: Preparation and deposition of a Ti buffer layer on the cigarette machine cutter;

[0077] S70: Preparation and deposition of TiAlN coating on cigarette machine blades;

[0078] S80: Maintains a constant temperature inside the coating chamber, allowing the coating to grow better;

[0079] S90: Preparation of an anti-stick coating for the part of the cigarette machine blade covering;

[0080] S100: Grinding and polishing the cigarette machine blades after the coating preparation is completed.

[0081] Optionally, in the above technical solution, the specific steps for cleaning and pre-treating the surface of the cigarette machine blades include:

[0082] First, immerse the cigarette machine blades in acetone solvent for ultrasonic cleaning for 20 minutes to remove oil stains from the surface of the cigarette machine blades.

[0083] After cleaning with acetone solvent, the cigarette machine blades were placed in a 99% ethanol solution for ultrasonic cleaning for 20 minutes to remove the acetone solvent and other impurities from the surface of the cigarette machine blades.

[0084] Nitrogen gas is sprayed from the high-pressure nitrogen cylinder nozzle to dry the surface of the cigarette machine blades. During the drying process, the operator should wear a protective mask to prevent the 99% ethanol solution from splashing and causing injury to the operator's face.

[0085] Furthermore, in the above technical solution, the specific steps for rough grinding the cleaned cigarette machine blades to enhance the adhesion of the coating include:

[0086] First, use an electric grinding wheel to grind the surface of the cigarette machine blades to remove any unevenness.

[0087] Then, apply polishing paste to the surface of the cigarette machine blades, and use a polishing device to grind and polish the blades to remove burrs.

[0088] After deburring, the cigarette machine blade is moved to a sandblasting machine. Quartz particles with a diameter of 0.5 to 1 mm are used to sandblast its surface. The quartz particles are loaded into the sandblasting machine and sprayed using a spray gun. During the spraying process, it is necessary to ensure that the quartz particles can evenly cover and contact the blade surface to increase the homogeneous roughness of the cigarette machine blade surface, which facilitates better adhesion of the coating in the later stage.

[0089] Furthermore, in the above technical solution, the specific steps of covering the roughened cigarette machine blade and fixing it to the target holder include:

[0090] First, the cigarette machine blade is divided into a cutting edge and a back of the blade. The cutting edge is the blade used for cutting, and the back of the blade is divided into a part for supporting and protecting the cutting edge.

[0091] Then apply masking liquid to the back of the blade. Choose a masking liquid that is anti-static and heat-resistant. When applying, make sure that the masking liquid is evenly applied to the surface of the back of the blade. Use a scraper to remove any excess material at the edges to avoid uneven application. The thickness of the masking liquid should be ≥1mm. Avoid applying it too thinly, as it will be difficult to peel it off after it has cured. Then wait for the masking liquid to dry completely.

[0092] The covered cigarette machine blades are fixedly installed onto the target holder using clamps on the target holder.

[0093] Furthermore, in the above technical solution, the specific steps for placing the target holder along with the cigarette machine blade into the coating chamber for vacuuming include:

[0094] First, move the target holder, which is fixedly installed with the cigarette machine blade, into the coating chamber;

[0095] Then clean the target site and install the Ti and TiAlN targets at the corresponding positions on the target site;

[0096] Then shut off all air supply and inlet valves in the coating chamber;

[0097] The coating chamber is evacuated using a vacuum pump, bringing the back-side vacuum to 2×10⁻⁶. -4 Pa

[0098] Furthermore, in the above technical solution, the specific steps for backsplash cleaning of the exposed substrate surface of the cigarette machine blade using a pulsed bias power supply include:

[0099] Once the vacuum in the coating chamber reaches the set standard, pure argon gas at 40 sccm is introduced.

[0100] To bring the air pressure in the regulating chamber to 2.5 Pa;

[0101] The surface of the cigarette machine blade substrate was cleaned by backsplashing using a pulsed bias power supply with a voltage of 600V and a cleaning time of 40 minutes.

[0102] Furthermore, in the above technical solution, the specific steps for preparing and depositing the Ti buffer layer on the cigarette machine blade include:

[0103] The internal temperature of the coating chamber is raised to 300℃;

[0104] Sputter the Ti target for 20 seconds to remove impurities from the target surface;

[0105] The internal air pressure of the coating chamber was adjusted to 0.3 Pa, the output power was adjusted to 50 W, and the Ti buffer layer was deposited with pure Ar = 39 sccm.

[0106] Furthermore, in the above technical solution, the specific steps for preparing and depositing the TiAlN coating on the cigarette machine blade include:

[0107] After the Ti buffer layer has been deposited, adjust the internal temperature of the coating chamber to 250℃;

[0108] Once the temperature is reached, the TiAlN target is sputtered for 30 seconds to remove impurities from the target surface.

[0109] The internal air pressure of the coating chamber was adjusted to 1.2 Pa, the power was adjusted to 200 W, and the TiAlN coating was deposited with Ar:N2 = 4:1.

[0110] Furthermore, in the above technical solution, the specific steps for maintaining a constant temperature inside the coating chamber to allow for better coating growth include:

[0111] Maintain constant air pressure, temperature, and Ar:N2 atmosphere ratio inside the coating chamber for 20 minutes to ensure better coating adhesion.

[0112] The coating chamber is cooled at a rate of 8°C / min. When the internal temperature of the coating chamber drops below 50°C, the power supply and gas source are turned off, and the coating deposition is completed.

[0113] Air is introduced into the coating chamber, the chamber door is opened, and the target holder along with the cigarette machine blades is removed.

[0114] Furthermore, in the above technical solution, the specific steps for preparing the anti-stick coating on the covering part of the cigarette machine blade include:

[0115] Remove the cigarette machine cutter with the strength coating applied from the target holder;

[0116] Peel off the hardened masking liquid from the back of the cigarette machine blade.

[0117] Apply masking liquid to the cutting edge of the cigarette machine blade and wait for the masking liquid to dry completely.

[0118] The cigarette machine blade is secured by a clamp at the top of the rotating tray;

[0119] Move the rotating tray along with the cigarette machine blades to the carrying platform of the water curtain equipment;

[0120] Pour anti-stick coating paint into the spray gun, connect the air compressor, and spray the coating onto the back of the exposed blade of the cigarette machine.

[0121] Place the cigarette machine blades, after they have been coated with the anti-stick coating, into a curing box to cure.

[0122] After curing, peel off the cured masking liquid from the cutting edge of the cigarette machine knife, and put the cigarette machine knife back into the coating chamber and heat it to 200°C for baking to further help the anti-stick coating cure.

[0123] like Figure 2 As shown, further, in the above technical solution;

[0124] The cigarette machine blade includes a cutting edge portion 10 and a blade back portion 11. The cutting edge portion 10 is provided with a strength coating 12, which includes a Ti buffer layer 14 and a TiAlN coating 15. The blade back portion 11 is provided with an anti-stick coating 13. The strength coating 12 is used to improve the wear resistance of the blade, extend the service life of the blade and reduce the maintenance frequency. The anti-stick coating 13 is used to reduce the adhesion and carbon buildup of cigarettes and other impurities on the blade surface, which helps to improve the production efficiency and stability of the cigarette machine and reduce the time spent on cleaning and maintenance.

[0125] Example 2:

[0126] Includes the following steps:

[0127] S10: Cleaning and pre-treatment of the surface of the cigarette machine blades;

[0128] S20: Roughly grind the cleaned cigarette machine blades to enhance the adhesion of the coating;

[0129] S30: Cover the roughened cigarette machine blades in the affected area and fix them on the target support;

[0130] S40: Place the target holder along with the cigarette machine blade into the coating chamber for vacuuming;

[0131] S50: Uses pulsed bias power supply to perform backsplash cleaning on the exposed substrate surface of cigarette machine blades;

[0132] S60: Preparation and deposition of a Ti buffer layer on the cigarette machine cutter;

[0133] S70: Preparation and deposition of TiAlN coating on cigarette machine blades;

[0134] S80: Maintains a constant temperature inside the coating chamber, allowing the coating to grow better;

[0135] S90: Preparation of an anti-stick coating for the part of the cigarette machine blade covering;

[0136] S100: Grinding and polishing the cigarette machine blades after the coating preparation is completed.

[0137] Optionally, in the above technical solution, the specific steps for cleaning and pre-treating the surface of the cigarette machine blades include:

[0138] First, immerse the cigarette machine blades in acetone solvent for ultrasonic cleaning for 20 minutes to remove oil stains from the surface of the cigarette machine blades.

[0139] After cleaning with acetone solvent, the cigarette machine blades were placed in a 99% ethanol solution for ultrasonic cleaning for 20 minutes to remove the acetone solvent and other impurities from the surface of the cigarette machine blades.

[0140] Nitrogen gas is sprayed from the high-pressure nitrogen cylinder nozzle to dry the surface of the cigarette machine blades. During the drying process, the operator should wear a protective mask to prevent the 99% ethanol solution from splashing and causing injury to the operator's face.

[0141] Furthermore, in the above technical solution, the specific steps for rough grinding the cleaned cigarette machine blades to enhance the adhesion of the coating include:

[0142] First, use an electric grinding wheel to grind the surface of the cigarette machine blades to remove any unevenness.

[0143] Then, apply polishing paste to the surface of the cigarette machine blades, place them in the polishing device, and polish the cigarette machine blades to remove burrs from the blades;

[0144] After deburring, the cigarette machine blade is transferred to a sandblasting machine. Quartz particles with a diameter of 0.5 to 1 mm are used to sandblast its surface. The quartz particles are loaded into the sandblasting machine and sprayed using a spray gun. During the spraying process, it is necessary to ensure that the quartz particles can be evenly covered on the blade surface to increase the homogeneous roughness of the cigarette machine blade surface, which facilitates better adhesion of the coating in the later stage.

[0145] Furthermore, in the above technical solution, the specific steps of covering the roughened cigarette machine blade and fixing it to the target holder include:

[0146] First, the cigarette machine blade is divided into a cutting edge and a back of the blade. The cutting edge is the blade used for cutting, and the back of the blade is divided into a part for supporting and protecting the cutting edge.

[0147] Then apply masking liquid to the back of the blade. Choose a masking liquid that is anti-static and heat-resistant. When applying, make sure that the masking liquid is evenly applied to the surface of the back of the blade. Use a scraper to remove any excess material at the edges to avoid uneven application. The thickness of the masking liquid should be ≥1mm. Avoid applying it too thinly, as it will be difficult to peel it off after it has cured. Then wait for the masking liquid to dry completely.

[0148] The covered cigarette machine blades are fixedly installed onto the target holder using clamps on the target holder.

[0149] Furthermore, in the above technical solution, the specific steps for placing the target holder along with the cigarette machine blade into the coating chamber for vacuuming include:

[0150] First, move the target holder, which is fixedly installed with the cigarette machine blade, into the coating chamber;

[0151] Then clean the target site and install the Ti and TiAlN targets at the corresponding positions on the target site;

[0152] Then shut off all air supply and inlet valves in the coating chamber;

[0153] The coating chamber is evacuated using a vacuum pump, bringing the back-side vacuum to 2×10⁻⁶. -4 Pa

[0154] Furthermore, in the above technical solution, the specific steps for backsplash cleaning of the exposed substrate surface of the cigarette machine blade using a pulsed bias power supply include:

[0155] Once the vacuum in the coating chamber reaches the set standard, pure argon gas at 40 sccm is introduced.

[0156] To bring the air pressure in the regulating chamber to 2.5 Pa;

[0157] The surface of the cigarette machine blade substrate was cleaned by backsplashing using a pulsed bias power supply with a voltage of 600V and a cleaning time of 40 minutes.

[0158] Furthermore, in the above technical solution, the specific steps for preparing and depositing the Ti buffer layer on the cigarette machine blade include:

[0159] The internal temperature of the coating chamber is raised to 300℃;

[0160] Sputter the Ti target for 25 seconds to remove impurities from the target surface;

[0161] The internal air pressure of the coating chamber was adjusted to 0.3 Pa, the output power was adjusted to 50 W, and the Ti buffer layer was deposited with pure Ar = 39 sccm.

[0162] Furthermore, in the above technical solution, the specific steps for preparing and depositing the TiAlN coating on the cigarette machine blade include:

[0163] After the Ti buffer layer has been deposited, maintain the internal temperature of the coating chamber at 300℃.

[0164] Sputter the TiAlN target for 30 seconds to remove impurities from the target surface;

[0165] The internal air pressure of the coating chamber was adjusted to 1.2 Pa, the power was adjusted to 200 W, and the TiAlN coating was deposited with Ar:N2 = 4:1.

[0166] Furthermore, in the above technical solution, the specific steps for maintaining a constant temperature inside the coating chamber to allow for better coating growth include:

[0167] Maintain constant air pressure, temperature, and Ar:N2 atmosphere ratio inside the coating chamber for 20 minutes to ensure better coating adhesion.

[0168] The coating chamber is cooled at a rate of 10℃ / min. When the internal temperature of the coating chamber drops below 50℃, the power supply and gas source are turned off, and the coating deposition is completed.

[0169] Air is introduced into the coating chamber, the chamber door is opened, and the target holder along with the cigarette machine blades is removed.

[0170] Furthermore, in the above technical solution, the specific steps for preparing the anti-stick coating on the covering part of the cigarette machine blade include:

[0171] Remove the cigarette machine cutter with the strength coating applied from the target holder;

[0172] Peel off the hardened masking liquid from the back of the cigarette machine blade.

[0173] Apply masking liquid to the cutting edge of the cigarette machine blade and wait for the masking liquid to dry completely.

[0174] The cigarette machine blade is secured by a clamp at the top of the rotating tray;

[0175] Move the rotating tray along with the cigarette machine blades to the carrying platform of the water curtain equipment;

[0176] Pour anti-stick coating paint into the spray gun, connect the air compressor, and spray the coating onto the back of the exposed blade of the cigarette machine.

[0177] Place the cigarette machine blades, after they have been coated with the anti-stick coating, into a curing box to cure.

[0178] After curing, peel off the cured masking liquid from the cutting edge of the cigarette machine knife, and put the cigarette machine knife back into the coating chamber and heat it to 250°C for baking to further help the anti-stick coating cure.

[0179] The cigarette machine blade includes a cutting edge portion 10 and a blade back portion 11. The cutting edge portion 10 is provided with a strength coating 12, which includes a Ti buffer layer 14 and a TiAlN coating 15. The blade back portion 11 is provided with an anti-stick coating 13. The strength coating 12 is used to improve the wear resistance of the blade, extend the service life of the blade and reduce the maintenance frequency. The anti-stick coating 13 is used to reduce the adhesion and carbon buildup of cigarettes and other impurities on the blade surface, which helps to improve the production efficiency and stability of the cigarette machine and reduce the time spent on cleaning and maintenance.

Claims

1. A method for preparing a wear-resistant coating for cigarette machine blades, characterized in that, Includes the following steps: S10: Cleaning and pre-treatment of the surface of the cigarette machine blades; S20: Roughly grind the cleaned cigarette machine blades to enhance the adhesion of the coating; S30: Cover the roughened cigarette machine blades in the area and fix them on the target holder; the specific steps include dividing the cigarette machine blades into the cutting edge part and the back part of the blade; applying masking liquid to the back part of the blade and waiting for the masking liquid to dry completely; and fixing the cigarette machine blades to the target holder using the clamping parts on the target holder. S40: Place the target holder along with the cigarette machine blade into the coating chamber for vacuuming; S50: Uses pulsed bias power supply to perform backsplash cleaning on the exposed substrate surface of cigarette machine blades; S60: Preparation and deposition of a Ti buffer layer on the cigarette machine cutter; S70: Preparation and deposition of TiAlN coating on cigarette machine blades; specific steps include heating the coating chamber to 300℃; sputtering Ti target material for 20~30s to remove impurities on the target surface; adjusting the gas pressure inside the coating chamber to 0.1~1Pa, adjusting the output power to 50~100W, and depositing a Ti buffer layer with pure Ar=39sccm; S80: Maintains a constant temperature inside the coating chamber to allow for better coating growth; specific steps include... After the Ti buffer layer is deposited, the internal temperature of the coating chamber is adjusted to room temperature to 400℃. After the temperature is reached, the TiAlN target is sputtered for 30 to 60 seconds to remove impurities on the target surface. The internal gas pressure of the coating chamber is adjusted to 0.1 to 3 Pa, the power is adjusted to 50 to 300 W, and the Ar:N2 ratio is 1:1 to 5:1 to deposit the TiAlN coating. S90: Preparation of an anti-stick coating for the masking portion of a cigarette machine cutter; specific steps include: removing the cigarette machine cutter with the prepared anti-stick coating from the target holder; peeling off the cured masking liquid from the back of the cigarette machine cutter; applying masking liquid to the cutting edge of the cigarette machine cutter and waiting for it to dry completely; fixing the cigarette machine cutter using the clamping device at the top of the rotating tray; moving the rotating tray along with the cigarette machine cutter to the carrying platform of the water curtain equipment; pouring the anti-stick coating paint into the spray gun, connecting the air compressor, and spraying the exposed back of the cigarette machine cutter; placing the cigarette machine cutter with the anti-stick coating paint in a curing chamber for curing; after curing, peeling off the cutter from the cigarette machine cutter. The masking liquid that has already cured the cutting edge is used to bake the cigarette machine blade again in the coating chamber at 150~300℃ to further help the anti-stick coating cure. The cigarette machine blade includes a cutting edge and a back edge. The cutting edge is coated with a strength coating, which includes a Ti buffer layer and a TiAlN coating. The back edge is coated with an anti-stick coating. The strength coating is used to improve the wear resistance of the blade, extend its service life and reduce maintenance frequency. The anti-stick coating is used to reduce the adhesion and carbon buildup of cigarettes and other impurities on the blade surface, which helps to improve the production efficiency and stability of the cigarette machine and reduce downtime for cleaning and maintenance. S100: Grinding and polishing the cigarette machine blades after the coating preparation is completed.

2. The method for preparing a wear-resistant coating for cigarette machine blades according to claim 1, characterized in that, The specific steps for cleaning and pre-treating the surface of the cigarette machine blades include: Step 1: Place the cigarette machine blades in a cleaning solvent to remove the oil and dirt from the surface of the cigarette machine blades; Step 2: Immerse the cigarette machine blades in an ethanol solution for ultrasonic cleaning; remove the cleaning solvent and other impurities from the surface of the cigarette machine blades. Step 3: Dry the surface of the cigarette rolling machine blades.

3. The method for preparing a wear-resistant coating for cigarette machine blades according to claim 2, characterized in that, The specific steps for coarsely grinding the cleaned cigarette machine blades to enhance the adhesion of the coating include: Step 1: Use an electric grinding wheel to grind the surface of the cigarette machine blades to remove any unevenness. Step 2: Place the cigarette machine blades into the grinding device to grind and polish the cigarette machine blades and remove burrs from the blades; Step 3: Apply uniform sandblasting to the surface of the cigarette machine blades to increase the surface roughness and facilitate the firm adhesion of the coating.

4. The method for preparing a wear-resistant coating for cigarette machine blades according to claim 3, characterized in that, The specific steps for placing the target holder along with the cigarette machine blade into the coating chamber for vacuuming include: Step 1: Place the target holder along with the cigarette machine blade into the coating chamber; Step 2: Install the Ti and TiAlN targets at the corresponding positions on the target sites; Step 3: Close all air supply and inlet valves in the coating chamber; Step 4: Evacuate the coating chamber using a vacuum pump, bringing the back vacuum to 8×10⁻⁶. -4 Pa~2×10 -4 Pa.

5. The method for preparing a wear-resistant coating for cigarette machine blades according to claim 4, characterized in that, The specific steps for backsplash cleaning of the exposed substrate surface of the cigarette machine blade using a pulsed bias power supply include: Step 1: Once the vacuum in the coating chamber reaches the set standard, introduce 40 sccm of pure argon gas. Step 2: Adjust the air pressure inside the chamber to 2.5 Pa; Step 3: Use a pulsed bias power supply to perform backsplash cleaning on the surface of the cigarette machine blade base. Apply a voltage of 600V and clean for 40 minutes.

6. The method for preparing a wear-resistant coating for cigarette machine blades according to claim 5, characterized in that, The specific steps for maintaining a constant temperature inside the coating chamber to allow for better coating growth include: Step 1: Keep the air pressure, temperature and Ar:N2 atmosphere ratio constant inside the coating chamber for 20 minutes to ensure better coating adhesion; Step 2: Cool the coating chamber at a rate of 8-10℃ / min. When the internal temperature of the coating chamber drops below 50℃, turn off the power and gas source, and the coating deposition is complete. Step 3: Introduce air into the coating chamber, open the chamber door, and remove the target holder along with the cigarette machine blades.

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