Air knife lip processing technology and processing equipment

Abstract

This invention discloses a machining process and equipment for air knife cutting lips, belonging to the field of cutting lip machining technology. The air knife cutting lip machining process includes: S1, material selection: custom-purchasing cast steel, cast iron, or cast aluminum blanks to match the air knife cutting lip's operating conditions and performance requirements; S2, rough machining: systematically rough machining the inspected and qualified upper and lower cutting lip blanks; S3, workpiece quenching treatment; S4, workpiece surface treatment: after quenching and straightening, precision surface machining and treatment are performed on the upper and lower cutting lips; S5, product assembly. This invention eliminates the need for manual placement into the machine tool during air knife placement and quenching, solving the technical problem of placement misalignment.

Description

Technical Field

[0001] This invention belongs to the field of blade lip processing technology, specifically relating to a pneumatic knife blade lip processing process and processing equipment. Background Technology

[0002] The air knife blade lip is the spray slit assembly at the end of the air knife. It is usually composed of an upper blade lip and a lower blade lip, which are fixed to the blade body or blade beam to form a narrow and uniform air outlet slit. After the high-pressure airflow is stabilized by the cavity, it passes through this slit to form a high-strength, thin and straight airflow curtain, realizing functions such as zinc blowing, drying, cooling and dust removal.

[0003] When machining the air knife blade, in order to prevent the blade from cracking, deforming and wearing, a quenching machine tool is usually used to quench the air knife blade to improve its hardness, strength and wear resistance. The quenching machine tool moves horizontally along the length of the air knife blade through an induction coil to locally heat the working part of the blade, and completes the quenching treatment of the air knife blade with spray cooling.

[0004] After the air knife is quenched, the operator usually stands next to the machine tool and waits for the air knife to cool to room temperature before manually removing it and placing it. Because the air knife blade is a thin and slender structure, it needs to be picked up horizontally and moved steadily. Then it is placed in the feed box for subsequent reheating. However, when picking it up manually, not only do you need to wait for the air knife to cool down, but you also need to move the air knife steadily by hand. Improper handling may cause the blade blade to bend, deform, or be damaged by bumps. Summary of the Invention

[0005] The purpose of this invention is to provide a process and equipment for machining the blade lip of an air knife, so that when the air knife is placed and quenched, it can be placed into the machine tool without the need for manual placement by the operator, thereby avoiding the problem of placement misalignment.

[0006] To achieve the above objectives, embodiments of the present invention provide a process for machining air knife blade lips, comprising the following steps: Step 1: Material Selection: Based on the operating conditions and performance requirements of the air knife blade, custom-procure cast steel, cast iron, and cast aluminum blanks to match the product, as well as ferrous and non-ferrous metal materials such as plates, profiles, pipes, and wires. After the purchased materials and parts arrive at the factory, they undergo strict incoming inspection to ensure that the blade has good wear resistance and corrosion resistance. Step 2: Rough Machining of Materials: The inspected and qualified upper and lower cutter lip blanks undergo systematic rough machining. A face milling machine is used for rough milling of the upper and lower cutter lips (150 rpm, 2 mm depth of cut, 150 mm / min feed rate, 5 mm allowance on one side). For the upper cutter lip, after rough milling to the four sides, it is further machined using a gantry planer. Subsequently, a horizontal milling machine is used for rough machining and angle adjustment of the upper and lower cutter lips (400 rpm, 1 mm depth of cut, 150 mm / min feed rate, 2 mm allowance on one side). Finally, the upper and lower cutting lips are center-drilled and milled with long notches using a gantry machining center (drilling speed 800 r / min, feed rate 50 mm / min, milling speed 1000 r / min, depth of cut 0.3 mm, feed rate 1000 mm / min). After machining, the threaded holes are tapped using an electric tapping machine (speed 100 r / min) to ensure that the threads are smooth and free from stripping. After rough machining, the iron filings on the workpiece surface are cleaned, and the machining dimensions are checked to see if they meet the rough machining process requirements. Step 3, workpiece quenching treatment: After the rough machining is qualified, the upper and lower blade lips are subjected to stress-relief annealing to eliminate the internal stress generated during the rough machining process. The upper and lower blade lips are then subjected to quenching process using quenching equipment (the air knife blade lip processing equipment mentioned below) to improve the hardness of the upper and lower blade lips. Subsequently, the upper and lower blade lips are subjected to stress straightening treatment again. Step 4: Workpiece Surface Treatment: After quenching and straightening to ensure it is qualified (i.e., not deformed or bent) and suitable for precision grinding, the upper and lower blade lips undergo precision surface machining and treatment. First, an end milling machine is used to align the workpiece and mill the mounting bottom surface, leaving a allowance on each surface (0.7mm allowance on each side). Then, a surface grinder is used to precision grind the key surfaces of the upper and lower blade lips to ensure perpendicularity, parallelism, and smoothness. After precision grinding, pre-plating polishing is performed (600-grit, 1000-grit, and 1500-grit sandpaper are used sequentially). The upper and lower blade lips are polished with sandpaper and polishing paste until the surface is free of burrs. Finally, a polishing machine is used in conjunction with a mixture of... Use a combination of polishing paste (800 grit, 1000 grit, and 1500 grit sandpaper in sequence for polishing, and polish repeatedly with a polishing machine at least 3 times until the surface finish is ≤Ra0.03μm) to polish the surface to be used. After polishing, perform electroplating (chromium layer thickness 0.005-0.01mm) to plate hard chromium on the blade lip surface. After electroplating, perform fine polishing. Use sandpaper to coarsely grind away the electroplating burrs, then change the sandpaper for fine grinding until the surface is smooth and has no feel. Finally, use a polishing machine with a mixture of coarse and fine polishing paste to polish each surface to achieve a final surface finish ≤Ra0.02μm, ensuring that the workpiece surface is free of any defects. Step 5: Product Assembly: Assemble the components according to the drawings and process requirements, and inspect the functions and performance of the components according to the drawings and process requirements. Finally, assemble the product according to the drawings and process requirements, debug the product functions, performance and technical parameters, and record the inspection. Finally, perform surface protection and packaging on the workpiece according to the drawings and process requirements.

[0007] A gas knife lip processing device, employing the aforementioned gas knife lip processing technology, is used to implement step three. It includes a quenching machine tool, a feeding plate, a vertical clamping assembly, a fixing assembly, and a receiving assembly. The feeding plate is disposed on the side of the quenching machine tool via two reciprocating pushing assemblies, configured to place the gas knife on the feeding plate. The reciprocating pushing assemblies horizontally move the feeding plate and the gas knife into the quenching machine tool for quenching. Each reciprocating pushing assembly is equipped with a vertical clamping assembly for clamping and fixing the gas knife placed on the feeding plate. The fixing assemblies are disposed on the sides of both reciprocating pushing assemblies, configured to fix the feeding plate when it is pulled outside the quenching machine tool to place the gas knife. The receiving assembly is installed between the two reciprocating pushing assemblies via two pulling assemblies, used to collect the gas knife after quenching.

[0008] In order to move or remove the feeding plate and air knife from the quenching machine tool, the reciprocating push assembly further includes a sliding rail, a reciprocating frame, and a mounting frame. The sliding rail is fixedly installed on the side of the quenching machine tool, the reciprocating frame is slidably installed on the top of the sliding rail, the mounting frame is fixedly installed on the side of the reciprocating frame, the feeding plate is slidably installed between the two mounting frames, and a baffle is fixedly installed between the two reciprocating frames, with the bottom end of the baffle contacting the top end of the receiving plate.

[0009] When moving the feeding plate, the air knife on the feeding plate should be prevented from moving. Furthermore, the vertical clamping assembly includes a threaded rod, a handwheel, and a clamping disc. Each mounting bracket is threaded with the threaded rod. The handwheel is coaxially fixedly installed at the top end of the threaded rod, and the clamping disc is coaxially fixedly installed at the bottom end of the threaded rod.

[0010] If it is necessary to fix the feeding plate when placing the air knife on the feeding plate, the fixing assembly further includes a pulling frame, a fixing frame and a fixing rod. The pulling frame is fixedly installed on the side of the reciprocating frame, the fixing frame is fixedly installed on the side of the sliding rail, and the fixing rod is slidably installed through the top of the fixing frame.

[0011] After the air knife is quenched, when collecting the air knife, the receiving assembly further includes a sliding box and a receiving plate. The sliding box is installed between two sliding rails via a lateral sliding assembly. The receiving plate is installed inside the sliding box via a disassembly assembly. The lateral sliding assembly includes a lateral sliding rail and sliding rods. Each side of the reciprocating frame is fixedly installed with the lateral sliding rail. Each side of the lateral sliding rail is slidably installed with two sets of sliding rods. Each set of sliding rods has two rods. The sliding box is fixedly installed between the two sets of sliding rods. The disassembly assembly includes a support plate, a disassembly rod, and a pull rope. Two support plates are fixedly installed inside the sliding box. Several disassembly rods are fixedly installed at the bottom of the receiving plate. The top of the support plate has a slot that matches the bottom of the disassembly rod. Two pull ropes are fixedly installed at the top of the receiving plate. The top of the pulling frame has a fixing groove that matches the bottom of the fixing rod.

[0012] The significant technical effects of the embodiments of the present invention are as follows: When quenching the air knife blade, the air knife is first placed on the feeding plate, and then the rear end of the air knife is pressed down and fixed by the vertical clamping component to fix the blade lip part of the air knife, so as to facilitate the subsequent quenching of the blade lip. When placing the air knife, the feeding plate can be fixed by the fixing component. After placement, the feeding plate and air knife are pushed into the quenching machine tool by the reciprocating push component, so as to quench the blade lip of the air knife. After quenching, the feeding plate and air knife can be moved out of the quenching machine tool again by the reciprocating push component. After the air knife is moved out, the air knife can be received by moving the feeding plate and receiving assembly. After receiving multiple air knives, the multiple air knives can be transported to the subsequent designated process by moving the receiving plate. In summary, through the cooperation of the feeding plate, vertical clamping assembly, fixing assembly and receiving assembly, this device can move the air knife without manual contact by the operator, thus enabling the air knife to be moved and removed smoothly. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art 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.

[0014] Figure 1 This is a schematic diagram of the overall structure in one embodiment of the present invention; Figure 2 for Figure 1 A schematic diagram of the structure of the reciprocating push component, the vertical clamping component, and the baffle; Figure 3 for Figure 1 A schematic diagram of the structure of the mounting frame, baffle, and feeding plate in conjunction; Figure 4 for Figure 1 A schematic diagram of the structure of the sliding rail, reciprocating frame, and fixing components; Figure 5 for Figure 1 A schematic diagram showing the disassembled assembly of the sliding rail and the receiving component; Figure 6 for Figure 1 A schematic diagram of the structure of the sliding box and the receiving plate in conjunction; Figure 7 for Figure 1 A schematic diagram of the structure of a medium quenching machine.

[0015] In the diagram: 1. Quenching machine tool; 2. Feeding plate; 3. Sliding rail; 4. Reciprocating frame; 5. Mounting frame; 6. Threaded rod; 7. Handwheel; 8. Clamping disc; 9. Pulling frame; 10. Fixed frame; 11. Fixed rod; 12. Sliding box; 13. Receiving plate; 14. Side slide rail; 15. Sliding rod; 16. Support plate; 17. Disassembly rod; 18. Pull rope; 19. Baffle. Detailed Implementation

[0016] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0017] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0018] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0019] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0020] In the description of the embodiments of this application, the term "and / or" is merely a description of the association relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship. In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple groups" refers to two or more groups (including two groups), and "multiple pieces" refers to two or more pieces (including two pieces).

[0021] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0022] In the description of the embodiments in this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. It can be the internal connection between two components or the interaction between two components.

[0023] Example 1: A process for machining the blade lip of an air knife, comprising the following steps: Step 1: Material Selection: Based on the operating conditions and performance requirements of the air knife blade, custom-procure cast steel, cast iron, and cast aluminum blanks to match the product, as well as ferrous and non-ferrous metal materials such as plates, profiles, pipes, and wires. After the purchased materials and parts arrive at the factory, they undergo strict incoming inspection to ensure that the blade has good wear resistance and corrosion resistance. Step 2: Rough Machining of Materials: The inspected and qualified upper and lower cutter lip blanks undergo systematic rough machining. A face milling machine is used for rough milling of the upper and lower cutter lips (150 rpm, 2 mm depth of cut, 150 mm / min feed rate, 5 mm allowance on one side). For the upper cutter lip, after rough milling to the four sides, it is further machined using a gantry planer. Subsequently, a horizontal milling machine is used for rough machining and angle adjustment of the upper and lower cutter lips (400 rpm, 1 mm depth of cut, 150 mm / min feed rate, 2 mm allowance on one side). Finally, the upper and lower cutting lips are center-drilled and milled with long notches using a gantry machining center (drilling speed 800 r / min, feed rate 50 mm / min, milling speed 1000 r / min, depth of cut 0.3 mm, feed rate 1000 mm / min). After machining, the threaded holes are tapped using an electric tapping machine (speed 100 r / min) to ensure that the threads are smooth and free from stripping. After rough machining, the iron filings on the workpiece surface are cleaned, and the machining dimensions are checked to see if they meet the rough machining process requirements. Step 3, workpiece quenching treatment: After the rough machining is qualified, the upper and lower blade lips are subjected to stress-relief annealing to eliminate the internal stress generated during the rough machining process. The upper and lower blade lips are then subjected to quenching process using quenching equipment (the air knife blade lip processing equipment mentioned below) to improve the hardness of the upper and lower blade lips. Subsequently, the upper and lower blade lips are subjected to stress straightening treatment again. Step 4: Workpiece Surface Treatment: After quenching and straightening, the upper and lower blade lips undergo precision surface machining and treatment. First, an end milling machine is used to align the workpiece and mill the mounting bottom surface, leaving a allowance on each surface (0.7mm allowance on each side). Then, a surface grinder is used to finely grind the key surfaces of the upper and lower blade lips to ensure perpendicularity, parallelism, and smoothness. After fine grinding, pre-plating polishing is performed (600-grit, 1000-grit, and 1500-grit sandpaper are used sequentially). The upper and lower blade lips are polished with sandpaper and polishing paste until the surface is free of burrs. Finally, a polishing machine is used in conjunction with a mixture of... Use a combination of polishing paste (800 grit, 1000 grit, and 1500 grit sandpaper in sequence for polishing, and polish repeatedly with a polishing machine at least 3 times until the surface finish is ≤ Ra0.03μm) to polish the surface to be used. After polishing, perform electroplating (chromium layer thickness 0.005-0.01mm) to plate hard chromium on the blade lip surface. After electroplating, perform fine polishing. Use sandpaper to coarsely grind away the electroplating burrs, then change to sandpaper for fine grinding until the surface is smooth and has no feel. Finally, use a polishing machine with a mixture of coarse and fine polishing paste to polish each surface to achieve a final surface finish ≤ Ra0.02μm, ensuring that the workpiece surface is free of any defects. Step 5: Product Assembly: Assemble the components according to the drawings and process requirements, and inspect the functions and performance of the components according to the drawings and process requirements. Finally, assemble the product according to the drawings and process requirements, debug the product functions, performance and technical parameters, and record the inspection. Finally, perform surface protection and packaging on the workpiece according to the drawings and process requirements.

[0024] Example 2, please refer to Figures 1-7 This second embodiment, based on an air knife lip processing technology, also proposes an air knife lip processing device, including a quenching machine tool 1, a feeding plate 2, a vertical clamping assembly, a fixing assembly, and a receiving assembly. The feeding plate 2 is disposed on the side of the quenching machine tool 1 via two reciprocating pushing assemblies, configured to place the air knife on the feeding plate 2. The feeding plate 2 and the air knife are horizontally moved into the quenching machine tool 1 by the reciprocating pushing assemblies for quenching. Each reciprocating pushing assembly is provided with a vertical clamping assembly for clamping and fixing the air knife placed on the feeding plate 2. The sides of both reciprocating pushing assemblies are provided with fixing assemblies, configured to fix the feeding plate 2 when it is pulled to the outside of the quenching machine tool 1 to place the air knife. The receiving assembly is installed between the two reciprocating pushing assemblies via two pulling assemblies, for collecting the air knife after quenching.

[0025] Before quenching, such as Figure 2 As shown, the operator moves the feeding plate 2 to the outside of the quenching machine tool 1 using a reciprocating push assembly. The reciprocating push assembly includes a sliding rail 3, a reciprocating frame 4, and a mounting frame 5. The sliding rail 3 is fixedly installed on the side of the quenching machine tool 1. The reciprocating frame 4 is slidably installed on the top of the sliding rail 3. The mounting frame 5 is fixedly installed on the side of the reciprocating frame 4. The feeding plate 2 is slidably installed between the two mounting frames 5. Specifically, the operator holds two pulling frames 9 with both hands and slides the two reciprocating frames 4 on the two sliding rails 3 respectively. The two reciprocating frames 4 drive the two mounting frames 5 to move backward, thereby moving the feeding plate 2 to the outside of the quenching machine tool 1.

[0026] After the movement is complete, such as Figure 4 As shown, the two reciprocating frames 4 are fixed by a fixing assembly, which includes a pull frame 9, a fixing frame 10, and a fixing rod 11. The pull frame 9 is fixedly installed on the side of the reciprocating frame 4, the fixing frame 10 is fixedly installed on the side of the sliding rail 3, and the fixing rod 11 is slidably installed through the top of the fixing frame 10. Specifically, since the top of the pull frame 9 has a fixing groove that matches the bottom of the fixing rod 11, after moving the pull frame 9 until the fixing groove is aligned with the bottom of the fixing rod 11, the fixing rod 11 is moved down and inserted into the fixing groove of the pull frame 9, thereby fixing the reciprocating frame 4.

[0027] After securing the air knife, place it on the feeding plate 2, as follows: Figure 2As shown, the upper part of the air knife is then fixedly clamped by a vertical clamping assembly, which includes a threaded rod 6, a handwheel 7, and a clamping disc 8. Each mounting bracket 5 is threaded with a threaded rod 6. The handwheel 7 is coaxially fixedly installed at the top of the threaded rod 6, and the clamping disc 8 is coaxially fixedly installed at the bottom of the threaded rod 6. Specifically, the operator places the air knife under the clamping disc 8, places the air knife lip outside the feeding plate 2, and then rotates the handwheel 7. The handwheel 7 drives the threaded rod 6 to move down the thread on the mounting bracket 5, thereby driving the clamping disc 8 to move down, pressing and fixing the part of the air knife on the feeding plate 2. After clamping, the fixing rod 11 is moved up to release the restriction on the reciprocating frame 4, pushing the reciprocating frame 4 and the mounting bracket 5 forward, thereby pushing the feeding plate 2 and the air knife into the quenching machine tool 1 for subsequent quenching.

[0028] After quenching, pull out the unloading plate 2, and then fix the pulling frame 9 again, as follows. Figure 5 and Figure 6 As shown, the quenched air knife is then collected by the receiving assembly. The receiving assembly includes a sliding box 12 and a receiving plate 13. The sliding box 12 is installed between two sliding rails 3 via a lateral sliding assembly. The receiving plate 13 is installed inside the sliding box 12 via a disassembly assembly. The lateral sliding assembly includes a lateral sliding rail 14 and sliding rods 15. A lateral sliding rail 14 is fixedly installed on the side of each reciprocating frame 4. Two sets of sliding rods 15 are slidably installed on the side of each lateral sliding rail 14. There are two sliding rods 15 in each set. The sliding box 12 is fixedly installed between the two sets of sliding rods 15. The disassembly assembly includes a support plate 16, disassembly rods 17, and pull ropes 18. Two support plates 16 are fixedly installed inside the sliding box 12. Several disassembly rods 17 are fixedly installed at the bottom of the receiving plate 13. The top of the support plate 16 has a slot that matches the bottom of the disassembly rods 17. Two pull ropes 18 are fixedly installed at the top of the receiving plate 13.

[0029] Specifically, after the pulling frame 9 is fixed, the feeding plate 2 is positioned above the receiving plate 13. The feeding plate 2 and the receiving plate 13 are not in contact and are relatively close. Then, the operator rotates the handwheel 7 to move the threaded rod 6 upward, thereby causing the clamping disc 8 to disengage from the air knife. Afterward, through the sliding action of the feeding plate 2 between the two mounting frames 5, the operator pulls the feeding plate 2 backward, as... Figure 3 As shown, because a baffle 19 is fixedly installed between the two reciprocating frames 4, and the bottom end of the baffle 19 is in contact with the top end of the receiving plate 13, when the feeding plate 2 moves backward, the air knife will be blocked by the baffle 19 and will not move backward. After the feeding plate 2 has moved backward, the air knife will detach from the feeding plate 2 and fall directly onto the receiving plate 13. It should be added that a buffer layer is installed on the side of the baffle 19 and the top end of the receiving plate 13. After the air knife is received, the feeding plate 2 is pushed back to its original position, and then the second air knife is quenched again.

[0030] After the second air knife is quenched, it is pulled out. Then, the sliding box 12 is moved outward by the sliding rod 15 on the lateral slide rail 14, so that the second quenched air knife is placed in another position on the receiving plate 13. This places the first and second air knives side by side on the receiving plate 13, preventing multiple air knives from overlapping. This process is repeated. After the receiving plate 13 is full of air knives, the worker holds two pull ropes 18 and lifts the receiving plate 13, thereby moving several air knives to the subsequent processing steps. After placement, the bottom disassembly rod 17 of the receiving plate 13 is inserted into the slot of the support plate 16. At this time, the outer wall of the receiving plate 13 is in contact with the inner wall of the sliding box 12, and the receiving plate 13 is placed inside the sliding box 12.

[0031] Working principle: When processing the air knife blade, firstly, the two reciprocating frames 4 slide backward on the two sliding rails 3 respectively. The two reciprocating frames 4 drive the two mounting frames 5 to move backward, thereby moving the feeding plate 2 to the outside of the quenching machine tool 1. Then, after moving to the fixed groove of the pull frame 9 and aligning it with the bottom end of the fixed rod 11, the fixed rod 11 is moved down and inserted into the fixed groove of the pull frame 9, thereby fixing the reciprocating frame 4. After fixing, the operator places the air knife under the clamping disc 8 and places the air knife blade on the outside of the feeding plate 2. Then, the handwheel 7 is rotated, and the handwheel 7 drives the threaded rod 6 to move down the thread on the mounting frame 5, thereby driving the clamping disc 8 to move down and press and fix the part of the air knife on the feeding plate 2. After clamping, the fixed rod 11 is moved up to release the restriction on the reciprocating frame 4, and push the reciprocating frame 4 and the mounting frame 5 forward, thereby pushing the feeding plate 2 and the air knife into the quenching machine tool 1 for subsequent quenching.

[0032] like Figure 7 As shown, during quenching, the feeding plate 2 acts as the processing table of the quenching machine tool 1. The quenching machine tool 1 adjusts the position of the induction coil through CNC to align the coil with the cutting edge of the blade lip. Then, the equipment is started, and the induction coil is energized to generate a high-frequency magnetic field, which locally and rapidly heats the cutting edge of the blade lip. The coil moves at a constant speed along the length of the blade lip to achieve uniform heating of the entire cutting edge. While the induction coil is heating, the cooling nozzle follows the heated area to spray water for cooling, so that the high-temperature cutting edge is cooled down quickly, completing the quenching and hardening.

[0033] After quenching, the discharge plate 2 is pulled out, and then the pulling frame 9 is fixed again. At this time, the discharge plate 2 is above the receiving plate 13. Then, the operator rotates the handwheel 7 to move the threaded rod 6 upward, which in turn moves the clamping disc 8 away from the air knife. The operator pulls the discharge plate 2 backward. When the discharge plate 2 moves backward, the air knife will be blocked by the baffle 19 and will not move backward. After the discharge plate 2 has moved backward, the air knife will detach from the discharge plate 2 and fall directly onto the receiving plate 13, thus completing the collection of the first air knife after quenching. Then, the second air knife is quenched according to the above steps.

[0034] After the second air knife is quenched, it is pulled out. Then, the sliding box 12 is moved outward by the sliding rod 15 on the lateral slide rail 14, so that the second quenched air knife is placed in another position on the receiving plate 13. After the receiving plate 13 is full of air knives, the worker holds two pull ropes 18 to lift the receiving plate 13, thereby driving several air knives to the subsequent processing steps. After placement, the bottom disassembly rod 17 of the receiving plate 13 is inserted into the slot of the support plate 16. At this time, the outer wall of the receiving plate 13 is in contact with the inner wall of the sliding box 12, and the receiving plate 13 is placed inside the sliding box 12.

[0035] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of protection of the claims of the present invention.

Claims

1. A process for machining the blade lip of an air knife, characterized in that, Includes the following steps: S1. Material Selection: Based on the operating conditions and performance requirements of the air knife blade, prepare cast steel, cast iron, and cast aluminum blanks, as well as plates, profiles, pipes, and wires of ferrous and non-ferrous metal materials that are compatible with the product. S2. Material roughing: Systematic roughing of the upper and lower blade lip blanks; S3. Workpiece quenching treatment: After the rough machining is qualified, the upper and lower blade lips are subjected to stress relief annealing. The upper and lower blade lips are quenched using quenching equipment. Then, the upper and lower blade lips are subjected to stress straightening treatment again. S4. Surface treatment of workpiece: After quenching and straightening, the upper and lower blade lips are precision surface-machined and treated. S5. Product assembly: Assembling components.

2. The air knife blade lip processing technology according to claim 1, characterized in that, In S2, the upper and lower cutting lips are rough milled using an end milling machine. For the upper cutting lip, after rough milling the square, it is further processed by a gantry planer. Then, the upper and lower cutting lips are rough machined and the angle is opened by a horizontal milling machine. Finally, the upper and lower cutting lips are center-drilled and milled with long notches by a gantry machining center. After the machining is completed, the threaded holes are tapped by an electric tapping machine. After the rough machining is completed, the iron filings on the surface of the workpiece are cleaned.

3. The air knife blade lip machining process according to claim 1, characterized in that, In S3, after the upper and lower blade lips are stress-corrected, the workpiece is visually inspected to confirm that there are no cracks or deformations.

4. The air knife blade lip machining process according to claim 1, characterized in that, In S4, the workpiece is first aligned and the mounting bottom surface is milled using an end milling machine. Then, the upper and lower blade lips are finely ground using a surface grinder. The upper and lower blade lips are polished using sandpaper and polishing paste. Then, a polishing machine is used with mixed polishing paste, and the polishing machine is used for repeated polishing. The working surface is polished first, and then the blade lip surface is plated with hard chrome. After electroplating, the burrs are first removed by rough grinding with sandpaper, and then fine grinding is performed until the surface is smooth and has no tactile feel. Finally, a polishing machine is used with mixed coarse and fine polishing paste to repeatedly polish each working surface.

5. An air knife lip machining equipment, referring to the air knife lip machining process of claim 1, for implementing step S3, including a quenching machine tool (1), characterized in that, Also includes: The feeding plate (2) is provided on the side of the quenching machine (1) by means of two reciprocating pushing components. It is configured to place the air knife on the feeding plate (2) and move the feeding plate (2) and the air knife horizontally into the quenching machine (1) by means of the reciprocating pushing components for quenching. Vertical clamping assembly, each of the reciprocating push assemblies is provided with the vertical clamping assembly, which is used to clamp and fix the air knife placed on the feeding plate (2); The fixing components are provided on the sides of both reciprocating push components and are configured to fix the feeding plate (2) when the feeding plate (2) is pulled to the outside of the quenching machine (1) to place the air knife; The receiving assembly is installed between the two reciprocating pushing assemblies via two pulling assemblies, and is used to collect the air knife after the air knife has been quenched.

6. The air knife lip processing equipment according to claim 5, characterized in that, The reciprocating drive component includes: The sliding rail (3) is fixedly installed on the side of the quenching machine tool (1). A reciprocating frame (4) is slidably mounted on the top of the sliding rail (3); Mounting bracket (5), which is fixedly mounted on the side of the reciprocating frame (4), and the feeding plate (2) is slidably mounted between the two mounting brackets (5).

7. The air knife lip processing equipment according to claim 6, characterized in that, The vertical clamping assembly includes: Threaded rod (6), each of the mounting brackets (5) is threadedly mounted with the threaded rod (6); Handwheel (7), which is coaxially fixedly installed on the top of the threaded rod (6); A clamping disc (8) is coaxially fixedly installed at the bottom end of the threaded rod (6).

8. The air knife lip processing equipment according to claim 7, characterized in that, The fixing component includes: Pulling frame (9), the pulling frame (9) is fixedly installed on the side of the reciprocating frame (4). A fixing frame (10) is fixedly installed on the side of the sliding rail (3); A fixing rod (11) is slidably mounted on the top of the fixing frame (10).

9. The air knife lip processing equipment according to claim 8, characterized in that, The receiving assembly includes: A sliding box (12) is mounted between two sliding rails (3) via a lateral sliding assembly; The receiving plate (13) is installed in the sliding box (12) by means of a disassembly assembly.

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