Regeneration surface treatment method for meltallizing coating of ceramic workpiece and coating equipment

Abstract

The invention relates to a regeneration surface treatment method for a meltallizing coating of a ceramic workpiece. The regeneration surface treatment method comprises a cleaning process, a first meltallizing process, a second meltallizing process and a polishing process, the invention further provides ceramic workpiece meltallizing and laminating equipment according to the treatment method. Comprising a machine base, a cleaning mechanism arranged on the machine base and used for cleaning a ceramic rotor, a meltallizing mechanism arranged on the machine base and used for meltallizing a coating layer on the outer surface of a blade of the ceramic rotor, and at least two shielding mechanisms arranged in the meltallizing mechanism and used for shielding and cooling the side walls of the two sides of the blade. The polishing mechanism is arranged in the meltallizing mechanism and is used for polishing and flattening the film coating layer; the supporting mechanism is movably arranged between the cleaning mechanism and the meltallizing mechanism and is used for supporting a rotating shaft on the ceramic rotor; and the conveying mechanism is arranged outside the machine base and is used for positioning and conveying the ceramic rotor to the supporting mechanism. The problems that an existing meltallizing coating treatment method is poor, temperature change is too high, and the yield is low are solved.

Description

Technical Field

[0001] The invention relates to the technical field of thermal spray coating, and in particular to a regenerative surface treatment method and coating equipment for thermal spray coating of a ceramic workpiece. Background Art

[0002] Ceramic workpieces are usually made of ceramic materials such as alumina and zirconia. These materials have good mechanical properties and chemical stability and are widely used in the fields of automobiles, aerospace, medical equipment, etc. They are mainly processed by grinding, cutting and drilling. In addition, in order to improve the stability of the overall performance of ceramic workpieces during use, it is usually necessary to perform spray coating on the surface to improve corrosion resistance, extend service life and adapt to special working environments. Spray coating is a special processing technology in surface treatment with a wide range of uses. It is also called thermal spraying or spray welding. Its basic principle is to heat and melt the powder or wire, and impact and adhere to the substrate or workpiece surface under high-speed gas conveyance, so that it accumulates and solidifies to form a film thickness or coating to achieve the purposes of wear resistance, lubrication, insulation, and reinforcement.

[0003] Patent document with patent number CN111441008A discloses an automatic ceramic thermal spraying equipment, including a clamping mechanism, a raw material tank, a first connecting pipe, an oxygen tank, a second connecting pipe, a first three-way pipe, a third connecting pipe, a first annular pipe, a spray gun, a second annular pipe, a nozzle, a mobile driving mechanism, a blower mechanism, a rotating table and a frame; the raw material tank is connected to the first three-way pipe through the first connecting pipe, the oxygen tank is connected to the first three-way pipe through the second connecting pipe, and the two ends of the third connecting pipe are respectively connected to the first three-way pipe and the first annular pipe; the output end of the blower mechanism is connected to the second annular pipe; the mobile driving mechanism includes a mounting table, a mounting frame and a linear guide; a driving device for driving the rotating table to rotate is provided on the frame; and a cylinder for driving the mounting plate to move horizontally is provided on the rotating table. The present invention can process two workpieces at one time, and the two workpieces are respectively in a thermal spraying state and a cooling state, which improves the processing efficiency of the workpieces and is convenient for disassembling and assembling the workpieces.

[0004] However, the inventors have found that in the actual production process of thermal spray coating on ceramic workpieces, poor thermal spray coating treatment methods can cause the local temperature of the ceramic workpiece to be too high. Sudden excessive temperature changes can cause uneven stress inside the ceramic, leading to the expansion of tiny gaps inside the ceramic, making the structure of the ceramic unstable and causing deformation or fracture. Especially when the ceramic wall of the ceramic workpiece where the thermal spray coating is performed is thin, it is more likely to be damaged, resulting in product quality problems and a low yield rate. Summary of the invention

[0005] The purpose of the present invention is to address the shortcomings of the prior art. During the process of thermal spray coating of the cleaned and dried ceramic workpiece, the first thermal spray surface and the second thermal spray surface on both sides of the coated ceramic wall are thermal spray coated in steps, so as to facilitate cooling of the coated ceramic wall during the thermal spray process, avoid deformation or fracture of the thinner coated ceramic wall caused by excessive temperature change, and after the coating is completed, the joint between the coating layer on the first thermal spray surface and the second thermal spray surface is polished and smoothed to complete the production, with high yield and good processing method. Thus, the problems of poor processing method of existing thermal spray coating, excessive temperature change and low yield are solved.

[0006] In view of the above technical problems, the technical solution is as follows: a regenerative surface treatment method for thermal spray coating of a ceramic workpiece, comprising the following steps: Step 1: Cleaning process, after the non-sprayed surface of the ceramic workpiece is masked, the exposed ceramic wall is the coated ceramic wall and its surface is the sprayed surface, so the sprayed surface can be precisely cleaned and dried in turn; Step 2: a first spraying process, in which a coating layer is sprayed on a first spraying surface on one side of the coated ceramic wall, and before spraying the first spraying surface, a second spraying surface on the other side of the coated ceramic wall is shielded to facilitate cooling of the coated ceramic wall through the second spraying surface; Step 3: a second spraying process, spraying the coating layer on the second spraying surface, and before spraying the second spraying surface, shielding the coating layer on the second spraying surface, so that the coating layer on the first spraying surface and the second spraying surface can be spliced ​​with each other, and at the same time, it is convenient to cool the coated ceramic wall through the first spraying surface; Step 4: grinding process, after grinding the joint between the first sprayed surface and the coating layer on the second sprayed surface to be smooth, the coated ceramic wall with the coating layer sprayed thereon is locally cleaned and dried in sequence.

[0007] Preferably, in step 2, during the process of melt-spraying the coating layer on the first melt-spraying surface, it is detected whether the second melt-spraying surface is bent; In step three, during the process of melt-spraying the coating layer on the second melt-sprayed surface, it is detected whether the first melt-sprayed surface with the coating layer is bent, and after the coating layer is melt-sprayed on the second melt-sprayed surface, it is re-detected whether the second melt-sprayed surface with the coating layer is bent.

[0008] The present application also provides a ceramic workpiece spray coating device, based on the above-mentioned ceramic workpiece spray coating regeneration surface treatment method, comprising: A machine base, a cleaning mechanism disposed on the machine base and used for cleaning the ceramic rotor, a spraying mechanism disposed on the machine base and used for spraying a coating layer on the outer surface of the blades of the ceramic rotor, at least two shielding mechanisms disposed in the spraying mechanism and used for shielding and cooling the side walls of the blades, a polishing mechanism disposed in the spraying mechanism and used for polishing the coating layer, a supporting mechanism movably disposed between the cleaning mechanism and the spraying mechanism and used for supporting the rotating shaft on the ceramic rotor, and a conveying mechanism disposed outside the machine base and used for positioning and conveying the ceramic rotor to the supporting mechanism; The supporting mechanism includes a conveying assembly arranged on the machine base, a supporting assembly arranged on the conveying assembly to move up and down and rotate and used to support the shaft hole on the rotating shaft, an upper shielding plate arranged on the conveying assembly to shield the upper surface of the rotating shaft, and a lower shielding plate arranged on the conveying assembly to move up and down and rotate and used to shield the lower surface of the rotating shaft.

[0009] Preferably, the spraying mechanism includes a support frame arranged on the machine base, a first mounting frame radially movably arranged on the support frame, two spraying guns rotatably arranged on the first mounting frame and always facing the inner side wall between two adjacent blades, and a driving assembly arranged on the first mounting frame and used to drive the two spraying guns to rotate simultaneously.

[0010] Preferably, the two shielding mechanisms are respectively arranged on both sides of the first mounting frame, so as to respectively shield the outer side walls between two adjacent blades; The shielding mechanism includes a second mounting frame movably arranged on the support frame in the radial and vertical directions, two baffles arranged on the second mounting frame and respectively abutting against the upper shielding plate and the lower shielding plate, a shielding soft film arranged between the two baffles and used to shield the side walls of the blades and the outer wall of the rotating shaft, and a cooling component arranged between the two baffles and used to cool the blades through the shielding soft film.

[0011] Preferably, the cooling component includes a support column rotatably and movably arranged on a second mounting frame, a first fitting wall arranged on one side of the support column and used to support the shielding soft film to fit the side wall of the blade without a coating layer, a second fitting wall arranged on the other side of the support column and used to support the shielding soft film to fit the side wall of the blade with the coating layer, a cooling channel arranged in the support column and used to circulate a cooling liquid, an elastic member arranged on the second mounting frame and used to force the support column to move toward the blade, and a pressure sensor arranged on the second mounting frame and used to sense the elastic force of the elastic member.

[0012] Preferably, the driving assembly includes two transmission gears respectively arranged on the two spray guns and a driving rack movably arranged on the first mounting frame and respectively meshed with the two transmission gears on both sides.

[0013] Preferably, the grinding mechanism includes two third mounting frames radially movably arranged on the support frame, a grinding roller rotatably arranged on one of the third mounting frames and used for grinding the upper and lower ends of the blade, and a polishing roller rotatably arranged on the other third mounting frame and used for polishing the upper and lower ends of the blade.

[0014] Preferably, the conveying mechanism includes a conveying assembly arranged outside the machine base, two guide plates respectively arranged on both sides of the conveying assembly and used to guide the ceramic rotor to the middle of the conveying assembly, and a positioning plate arranged between the two guide plates, and the positioning plate is inserted between two adjacent blades and abuts against the side walls of the two blades, thereby positioning the shaft hole.

[0015] Preferably, the support assembly includes a support rod movably arranged up and down, a plurality of support blocks equidistantly arranged on the support rod along the circumference of the axial hole and radially movably arranged, and a push rod movably arranged inside the support rod and slidably connected to a push groove on the support block, so that the support block moves radially inward or outward with the movement of the push rod.

[0016] Beneficial effects of the present invention: (1) After the ceramic workpiece is loaded in the present invention, the non-sprayed surface is shielded and then the sprayed surface is precisely cleaned and dried in sequence through a cleaning process, thereby reducing the cleaning difficulty and reducing the use of cleaning liquid; then, during the first spraying process and the second spraying process, the first spraying surface and the second spraying surface on both sides of the coated ceramic wall are sprayed and coated in steps, which is convenient for cooling the coated ceramic wall during the spraying process to avoid deformation or fracture of the thinner coated ceramic wall caused by excessive temperature changes, and at the same time, it is convenient to detect the coated ceramic wall during the spraying process, and the spraying process can be stopped in time according to the detection structure, thereby avoiding product quality problems and waste of spraying materials; finally, after the spraying coating is completed, the joints on the coating layer are polished and smoothed in the polishing process, and the surface of the coating layer is precisely cleaned and dried in sequence, thereby further reducing the cleaning difficulty and reducing the use of cleaning liquid, thereby completing production and discharging, and the processing method of spraying coating is good; (2) In the present invention, a support mechanism is provided to support the ceramic rotor on the conveying mechanism, and then an upper shielding plate and a lower shielding plate are used to respectively shield the non-spraying surfaces of the upper and lower surfaces of the rotating shaft, so that the support assembly can be moved so that the ceramic rotor can enter the cleaning mechanism to perform the above-mentioned cleaning process, and the ceramic rotor rotates with the support assembly, so that the cleaning is more comprehensive and it is easier to dry after drying. At the same time, moving and rotating the support assembly enables the ceramic rotor to better cooperate with the spraying mechanism, the shielding mechanism and the grinding mechanism to perform the above-mentioned first spraying process, the second spraying process and the grinding process. The structure is reasonable, which is convenient for the cleaning operation and the spray coating processing of the ceramic rotor, and the production automation is high and the spraying accuracy is high; (3) In the present invention, a baffle plate and a shielding soft film are arranged to move radially with the second mounting frame to between two adjacent blades, so that the baffle plate and the shielding soft film can shield the other side of the blade away from the spraying mechanism, and at the same time, with the assistance of a movable and rotating support column, the shielding soft film can cooperate with the first bonding wall and the second bonding wall to support the shielding soft film to further bond to the uncoated and coated blades, and then, during the process of the spraying mechanism spraying a film on one side of the blade, a cooling liquid is circulated into the cooling channel in the support column, so that the other side of the blade can be quickly cooled, and the cooling effect is good. When the blade bends during the spraying coating process, the support column bonded to the blade will quickly move out of position and force the elastic member to deform, so that the pressure value sensed by the pressure sensor changes, thereby achieving rapid detection and making the spraying coating processing method better and more complete. In summary, the melt spray coating processing method and equipment have the effects of good processing method, low temperature change and high yield rate, and are particularly suitable for the field of melt spray coating technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0018] Figure 1 A schematic flow chart of a method for regenerating surface treatment of a ceramic workpiece by thermal spray coating provided by the present invention.

[0019] Figure 2 A stereoscopic diagram of a ceramic workpiece spray coating device provided by the present invention.

[0020] Figure 3 A three-dimensional cross-sectional view of a ceramic workpiece spray coating device provided by the present invention.

[0021] Figure 4 This is a schematic structural diagram of the support mechanism provided by the present invention.

[0022] Figure 5 A three-dimensional cross-sectional view of a support assembly provided by the present invention.

[0023] Figure 6 This is a schematic structural diagram of the melt-spraying mechanism provided by the present invention.

[0024] Figure 7 The present invention provides Figure 6 A partial enlarged view of point A in the middle.

[0025] Figure 8 The present invention provides Figure 6 A partial enlarged view of point B in the middle.

[0026] Fig. 9 The present invention provides Figure 6 A partial enlarged view of point C in the middle.

[0027] Fig.10 Two cross-sectional views of shielding mechanisms provided by the present invention.

[0028] Fig.11 The present invention provides Figure 6 A partial enlarged view of point D in the middle.

[0029] Fig.12 This is a schematic structural diagram of the conveying mechanism provided by the present invention.

[0030] Figure 13-Figure 15 A state diagram of the ceramic rotor during the spray coating process provided by the present invention.

[0031] Fig.16 A three-dimensional diagram of the ceramic rotor provided by the present invention. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present invention are clearly and completely described below in conjunction with the accompanying drawings.

[0033] Embodiment 1 like Figure 1 as well as Figure 13-Figure 16 As shown, a method for regenerating the surface of a ceramic workpiece by thermal spray coating comprises the following steps: Step 1: Cleaning process, after the non-sprayed surface of the ceramic workpiece is masked, the exposed ceramic wall is the coated ceramic wall and its surface is the sprayed surface, so the sprayed surface can be precisely cleaned and dried in turn; Step 2: In the first spraying process, a coating layer 83 is sprayed on a first spraying surface 821 on one side of the coated ceramic wall, and before the first spraying surface 821 is sprayed, a second spraying surface 822 on the other side of the coated ceramic wall is shielded to facilitate cooling of the coated ceramic wall through the second spraying surface 822; Step 3: A second thermal spraying process is performed to thermally spray the coating layer 83 on the second thermal spraying surface 822. Before thermal spraying the second thermal spraying surface 822, the coating layer 83 on the second thermal spraying surface 822 is shielded, so that the coating layer 83 on the first thermal spraying surface 821 and the second thermal spraying surface 822 can be spliced ​​with each other, and the coating ceramic wall can be cooled through the first thermal spraying surface 821. Step 4: grinding process, after the joint 831 between the first sprayed surface 821 and the coating layer 83 on the second sprayed surface 822 is polished and smoothed, the coated ceramic wall with the coating layer 83 sprayed thereon is locally cleaned and dried in sequence.

[0034] It should be noted that after loading, the ceramic workpiece is sprayed and coated through a cleaning process, a first spraying process and a second spraying process, and after the joints 831 between the coating layers 83 are polished and smoothed in step four, the ceramic workpiece can re-enter the cleaning process for cleaning and drying in sequence, thereby completing production and unloading.

[0035] Further, if Figure 1 as well as Figure 13-Figure 16 As shown, in step 2, during the process of melt-spraying the coating layer 83 on the first melt-spraying surface 821, it is detected whether the second melt-spraying surface 822 is bent; In step three, during the process of melt-spraying the coating layer 83 on the second melt-sprayed surface 822, it is detected whether the first melt-sprayed surface 821 with the coating layer 83 is bent. After the coating layer 83 is melt-sprayed on the second melt-sprayed surface 822, it is re-detected whether the second melt-sprayed surface 822 with the coating layer 83 is bent.

[0036] In this embodiment, by detecting the coated ceramic wall during the spraying process, the spraying process can be stopped in time according to the detection structure, thereby avoiding both product quality problems and waste of spraying materials.

[0037] Embodiment 2 like Figure 1-Figure 4 as well as Figure 13-Figure 16 As shown, a ceramic workpiece thermal spray coating device, based on the above-mentioned ceramic workpiece thermal spray coating regeneration surface treatment method, comprises: A machine base 1, a cleaning mechanism 2 disposed on the machine base 1 and used for cleaning a ceramic rotor 8, a spraying mechanism 3 disposed on the machine base 1 and used for spraying a coating layer 83 on the outer surface of a blade 82 of the ceramic rotor 8, at least two shielding mechanisms 4 disposed in the spraying mechanism 3 and used for shielding and cooling the side walls of the blades 82, a polishing mechanism 5 disposed in the spraying mechanism 3 and used for polishing the coating layer 83, a supporting mechanism 6 movably disposed between the cleaning mechanism 2 and the spraying mechanism 3 and used for supporting a rotating shaft 81 on the ceramic rotor 8, and a conveying mechanism 7 disposed outside the machine base 1 and used for positioning and conveying the ceramic rotor 8 to the supporting mechanism 6; The supporting mechanism 6 includes a conveying component 61 arranged on the machine base 1, a supporting component 62 which is arranged on the conveying component 61 so as to move up and down and rotate and is used to support the shaft hole 811 on the rotating shaft 81, an upper shielding plate 63 which is arranged on the conveying component 61 and is used to shield the upper surface of the rotating shaft 81, and a lower shielding plate 64 which is arranged on the conveying component 61 so as to move up and down and rotate and is used to shield the lower surface of the rotating shaft 81.

[0038] In this embodiment, by setting up a support mechanism 6 to support the ceramic rotor 8 on the conveying mechanism 7, and then assisting with the upper shielding plate 63 and the lower shielding plate 64 to respectively shield the non-sprayed surfaces of the upper and lower surfaces of the rotating shaft 81, the support assembly 62 can be moved and rotated so that the ceramic rotor 8 (that is, the above-mentioned ceramic workpiece) can pass through the cleaning mechanism 2, the spraying mechanism 3, the shielding mechanism 4 and the grinding mechanism 5 to perform the above-mentioned cleaning process, the first spraying process, the second spraying process and the grinding process. The structure is reasonable, which is convenient for the cleaning operation and the spraying coating processing of the ceramic rotor 8, and has high production automation and high spraying accuracy.

[0039] In detail, when in use, the conveying mechanism 7 positions and conveys the ceramic rotor 8 to the bottom of the supporting mechanism 6, the supporting assembly 62 moves downward until the upper shielding plate 63 shields the upper surface of the rotating shaft 81 and then supports the shaft hole 811, and then lifts up the ceramic rotor 8 and the lower shielding plate 64 moves upward until it shields the lower surface of the rotating shaft 81, and then the ceramic rotor 8 is moved to the cleaning mechanism 2 and the spraying mechanism 3 in turn through the conveying assembly 61, and the supporting assembly 62 and the lower shielding plate are rotated to make the ceramic rotor 8 rotate and cooperate, so that the cleaning is more comprehensive and easier to dry after spinning, and at the same time, it is convenient to spray-coat each blade 82 and then polish it, and finally the polished ceramic rotor 8 is conveyed to the cleaning mechanism 2 through the conveying assembly 61 for cleaning again to complete the spraying coating production.

[0040] It should be noted that a housing 11 is provided on the machine base 1 for isolating the cleaning mechanism 2 and the spraying mechanism 3, so as to ensure a clean environment during production and avoid cross contamination in various production processes; The cleaning mechanism 2 cleans the ceramic rotor 8 and the supporting mechanism 6 by spraying cleaning liquid and clean water. The conveying assembly 61 is a guide rail conveying structure. The cleaning mechanism 2 and the conveying assembly 61 themselves and the installation method are all existing technologies and will not be described in detail here. In addition, the blade 82 is the above-mentioned coated ceramic wall, the surface of the blade 82 is the sprayed surface, and the two sides of the blade 82 are the above-mentioned first sprayed surface 821 and the second sprayed surface 822 respectively.

[0041] Further, if Figure 6-Figure 7As shown, the spraying mechanism 3 includes a support frame 31 arranged on the machine base 1, a first mounting frame 32 radially movably arranged on the support frame 31, two spraying guns 33 rotatably arranged on the first mounting frame 32 and always facing the inner side wall between two adjacent blades 82, and a driving assembly 34 arranged on the first mounting frame 32 and used for driving the two spraying guns 33 to rotate simultaneously.

[0042] In this embodiment, a movable first mounting frame 32 is provided to cooperate with a driving assembly 34 to drive two spray guns 33 to always face the inner side wall between two adjacent blades 82, so as to achieve complete spray coating of the spray surface, and at the same time, the coated coating layer 83 has better effect and higher flatness.

[0043] In detail, when in use, the molten metal spraying gun 33 moves radially inward with the first mounting bracket 32 ​​to between the two blades 82, and the two molten metal spraying guns 33 are driven toward the outer wall of the rotating shaft 81 by the driving assembly 34. Then, during the molten metal spraying coating process, the driving assembly 34 drives the two molten metal spraying guns 33 to rotate toward the side walls of the two blades 82 to spray a molten metal spraying layer respectively. At the same time, the first mounting bracket 32 ​​is moved so that the distance between the molten metal spraying gun 33 and the outer wall of the rotating shaft 81 and the side wall of the blade 82 is always within a certain range, thereby improving the molten metal spraying coating effect. Finally, the supporting assembly 62 and the lower shielding plate 64 are moved upward or downward to move the ceramic rotor 8 upward or downward, and the molten metal spraying gun 33 is driven by the first mounting bracket 32 ​​and the driving assembly 34 to spray out another molten metal spraying layer connected to the previous molten metal spraying layer again, and this reciprocating process is used to complete the molten metal spraying coating of the molten metal spraying surface.

[0044] It should be noted that the principle of the spraying gun 33 spraying the coating layer 83 is prior art and will not be described in detail here.

[0045] Further, if Figure 6 as well as Figure 8-Figure 10 As shown, two shielding mechanisms 4 are respectively arranged on both sides of the first mounting frame 32, thereby respectively shielding the outer side walls between two adjacent blades 82; The shielding mechanism 4 includes a second mounting frame 41 movably arranged on the support frame 31 along the radial and vertical directions, two baffles 42 arranged on the second mounting frame 41 and respectively abutting against the upper shielding plate 63 and the lower shielding plate 64, a shielding soft film 43 arranged between the two baffles 42 and used to shield the side walls of the blades 82 and the outer wall of the rotating shaft 81, and a cooling component 44 arranged between the two baffles 42 and used to cool the blades 82 through the shielding soft film 43.

[0046] In this embodiment, by setting a baffle 42, a shielding soft film 43 and a cooling component 44 to move with the second mounting frame 41, the other side of the blade 82 away from the blasting gun 33 can be shielded and cooled, and the shielding soft film 43 has a certain deformation ability, so that it can fit more closely with the uncoated blade 82 and the coated blade 82, thereby improving the shielding effect and the cooling effect.

[0047] It should be noted that the two baffles 42 on the shielding mechanism 4 are connected to each other and both extend in the direction of the first mounting frame 32, and when the two shielding mechanisms 4 respectively shield the outer sides of two adjacent blades 82, the four baffles 42 on the two shielding mechanisms 4 cooperate with each other to form a shielding area 421 for shielding the two blades 82, thereby preventing the dust sprayed by the spray gun 33 from leaking out and adhering to other blades 82 during the spray coating, thereby affecting the subsequent spray production; In addition, the masking soft film 43 is made of the same material as the high temperature resistant masking tape or the high temperature resistant masking tape, which is the prior art and will not be described in detail here.

[0048] Further, if Figure 8-Figure 10 As shown, the cooling component 44 includes a support column 441 rotatably and movably arranged on the second mounting frame 41, a first fitting wall 442 arranged on one side of the support column 441 and used to support the shielding soft film 43 to fit the side wall of the blade 82 without the coating layer 83, a second fitting wall 443 arranged on the other side of the support column 441 and used to support the shielding soft film 43 to fit the side wall of the blade 82 with the coating layer 83, a cooling channel 444 arranged in the support column 441 and used to circulate a cooling liquid, an elastic member 445 arranged on the second mounting frame 41 and used to force the support column 441 to move toward the blade 82, and a pressure sensor 446 arranged on the second mounting frame 41 and used to sense the elastic force of the elastic member 445.

[0049] In this embodiment, by setting a movable and rotating support column 441, the first bonding wall 442 and the second bonding wall 443 are supported to support the shielding soft film 43 to further bond the uncoated blades 82 and the coated blades 82, and the cooling channel 444 is assisted by circulating cooling liquid, and the shielding soft film 43 supported by the first bonding wall 442 or the second bonding wall 443 has a better cooling effect on the blades 82. At the same time, the support column 441 bonded to the blade 82 cooperates with the pressure sensor 446 to sense the change in the elastic force of the elastic member 445, so as to detect whether the blade 82 is bent during the melt spraying coating process.

[0050] In detail, when in use, the second mounting frame 41 is moved radially inward until the shielding soft film 43 shields the uncoated blade 82. Then, according to whether the shielded blade 82 has a coating layer 83, the support column 441 is rotated to adjust the orientation of the first fitting wall 442 and the second fitting wall 443. Then, the support column 441 moves toward the direction close to the blade 82, and the first fitting wall 442 or the second fitting wall 443 is supported by the shielding soft film 43 to fit more closely to the side of the blade 82 with or without the coating layer 83. Then, when the other side of the blade 82 is melt-sprayed and coated, cooling liquid is circulated into the inner channel of the cooling channel 444, so that the soft film 43 can be quickly cooled by the first fitting wall 442 that is adhered to the blade 82. When the elastic member 445 is deformed and forces the pressure sensor 446 to sense the pressure change, it is possible to detect that the blade 82 has bent during the melt-spraying process.

[0051] It should be noted that the elastic member 445 is a coil spring, a leaf spring, etc., and the elastic member 445 and the pressure sensor 446 themselves and the installation method are all existing technologies and will not be described in detail here.

[0052] Further, if Figure 7 As shown, the driving assembly 34 includes two transmission gears 341 respectively disposed on the two spray guns 33 and a driving rack 342 movably disposed on the first mounting frame 32 and respectively meshed with the two transmission gears 341 on both sides.

[0053] In this embodiment, the driving rack 342 is provided to simultaneously drive the two spray guns 33 to rotate in opposite directions along with the two transmission gears 341 .

[0054] Further, if Figure 6 as well as Fig.11 As shown, the grinding mechanism 5 includes two third mounting frames 51 radially movably arranged on the support frame 31, a grinding roller 52 rotatably arranged on one third mounting frame 51 and used for grinding the upper and lower ends of the blade 82, and a polishing roller 53 rotatably arranged on another third mounting frame 51 and used for polishing the upper and lower ends of the blade 82.

[0055] In this embodiment, by arranging the grinding roller 52 and the polishing roller 53 to move radially with the second mounting frame 41, and cooperating with the movable support assembly 62 and the lower shielding plate 64, the grinding roller 52 and the polishing roller 53 can be moved to the top, bottom or outside of the ceramic rotor 8, so as to grind and polish the joints 831 between the coating layers 83 on both sides of the blades 82, so that the surface of the coating layer 83 is flat and smooth.

[0056] It should be noted that the driving structures for driving the two second mounting racks 41 and the two third mounting racks 51 to move radially are the same, and only one structure is provided below for reference: It includes a driving disk 54 rotatably arranged on the support frame 31, two driving slots 55 arranged on the driving disk 54, and two driving rods 56, one end of which is respectively connected to the second mounting frame 41 or the third mounting frame 51 and the other end is slidably connected to the driving slots 55, so that the rotating driving disk 54 can simultaneously drive the two second mounting frames 41 or the two third mounting frames 51 to move simultaneously in the radial direction through the two driving slots 55 and the two driving rods 56.

[0057] Further, if Figure 2 as well as Fig.12 As shown, the conveying mechanism 7 includes a conveying assembly 71 arranged outside the machine base 1, two guide plates 72 respectively arranged on both sides of the conveying assembly 71 and used to guide the ceramic rotor 8 to the middle of the conveying assembly 71, and a positioning plate 73 arranged between the two guide plates 72, and the positioning plate 73 is inserted between two adjacent blades 82 and abuts against the side walls of the two blades 82, thereby positioning the shaft hole 811.

[0058] In this embodiment, the conveying assembly 71 is provided to cooperate with the guide plate 72 and the positioning plate 73 to locate the blades 82 and the shaft hole 811 of the ceramic rotor 8, so as to facilitate the subsequent support of the support assembly 62 and facilitate the spray coating on the located blades 82.

[0059] In detail, during use, when the conveying component 71 conveys the ceramic rotor 8, the guide plate 72 pushes the ceramic rotor 8 to the middle of the conveying component 71, and then the positioning plate 73 is inserted between two adjacent blades 82 while the conveying component 71 continues to convey the ceramic rotor 8. The positioning plate 73 then pushes the conveying ceramic rotor 8 to move until the positioning plate 73 abuts against the side wall between the two adjacent blades 82, thereby positioning the blades 82 and locating the position of the conveying shaft hole 811.

[0060] It should be noted that the guide plate 72 and the positioning plate 73 are movably arranged on the conveying assembly 71. When the guide plate 72 and the positioning plate 73 move in a direction away from the supporting mechanism 6, the conveying assembly 71 is able to discharge the ceramic rotor 8 after the coating is completed. In addition, the conveying component 71 is a conveyor belt, which is a prior art and will not be described in detail here.

[0061] Further, if Figure 5 As shown, the support assembly 62 includes a support rod 621 that is movably arranged up and down, a plurality of support blocks 622 that are equidistantly spaced along the circumference of the axial hole 811 and radially movably arranged on the support rod 621, and a push rod 624 that is movably arranged up and down in the support rod 621 and is slidably connected to a push groove 623 on the support block 622, so that the support block 622 moves radially inward or outward along with the movement of the push rod 624.

[0062] In this embodiment, the push rod is provided to cooperate with the push groove 623 to push the support block 622 to move radially inward or outward, thereby supporting the inner wall of the shaft hole 811.

[0063] In detail, during support, the support rod 621 moves downward until the upper shielding plate 63 shields the upper surface of the rotating shaft 81, and the pushing rod 624 moves downward through the pushing groove 623 to push the multiple support blocks 622 and move radially outward until the inner wall of the support shaft hole 811.

[0064] It should be noted that one side of the support block 622 supporting the inner wall of the shaft hole 811 is made of soft material, which can not only improve the stability of the support through deformation, but also avoid the inner wall of the shaft hole 811 from being squeezed and damaged.

[0065] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by the terms "front and back", "left and right", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the invention.

[0066] Of course, in the present technical solution, those skilled in the art should understand that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0067] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art under the technical guidance of the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A method for regenerating the surface of a ceramic workpiece by thermal spray coating, characterized in that: The following steps are involved: Step 1: Cleaning process, after the non-sprayed surface of the ceramic workpiece is masked, the exposed ceramic wall is the coated ceramic wall and its surface is the sprayed surface, so the sprayed surface can be precisely cleaned and dried in turn; Step 2: a first spraying process, in which a coating layer is sprayed on a first spraying surface on one side of the coated ceramic wall, and before spraying the first spraying surface, a second spraying surface on the other side of the coated ceramic wall is shielded to facilitate cooling of the coated ceramic wall through the second spraying surface; Step 3: a second spraying process, spraying the coating layer on the second spraying surface, and before spraying the second spraying surface, shielding the coating layer on the second spraying surface, so that the coating layer on the first spraying surface and the second spraying surface can be spliced ​​with each other, and at the same time, it is convenient to cool the coated ceramic wall through the first spraying surface; Step 4: grinding process, after grinding the joint between the first sprayed surface and the coating layer on the second sprayed surface to be smooth, the coated ceramic wall with the coating layer sprayed thereon is locally cleaned and dried in sequence.

2. A method for regenerating surface treatment of a ceramic workpiece by thermal spray coating according to claim 1, characterized in that: In step 2, during the process of melt-spraying the coating layer on the first melt-spraying surface, detecting whether the second melt-spraying surface is bent; In step three, during the process of melt-spraying the coating layer on the second melt-sprayed surface, it is detected whether the first melt-sprayed surface with the coating layer is bent, and after the coating layer is melt-sprayed on the second melt-sprayed surface, it is re-detected whether the second melt-sprayed surface with the coating layer is bent.

3. A ceramic workpiece spray coating device, based on a ceramic workpiece spray coating regeneration surface treatment method according to any one of claims 1-2, characterized in that: include: A machine base, a cleaning mechanism disposed on the machine base and used for cleaning the ceramic rotor, a spraying mechanism disposed on the machine base and used for spraying a coating layer on the outer surface of the blades of the ceramic rotor, at least two shielding mechanisms disposed in the spraying mechanism and used for shielding and cooling the side walls of the blades, a polishing mechanism disposed in the spraying mechanism and used for polishing the coating layer, a supporting mechanism movably disposed between the cleaning mechanism and the spraying mechanism and used for supporting the rotating shaft on the ceramic rotor, and a conveying mechanism disposed outside the machine base and used for positioning and conveying the ceramic rotor to the supporting mechanism; The supporting mechanism includes a conveying assembly arranged on the machine base, a supporting assembly arranged on the conveying assembly to move up and down and rotate and used to support the shaft hole on the rotating shaft, an upper shielding plate arranged on the conveying assembly to shield the upper surface of the rotating shaft, and a lower shielding plate arranged on the conveying assembly to move up and down and rotate and used to shield the lower surface of the rotating shaft.

4. A ceramic workpiece spray coating device according to claim 3, characterized in that: The spraying mechanism includes a support frame arranged on the machine base, a first mounting frame arranged on the support frame for radial movement, two spraying guns rotatably arranged on the first mounting frame and always facing the inner side wall between two adjacent blades, and a driving component arranged on the first mounting frame and used to drive the two spraying guns to rotate simultaneously.

5. The ceramic workpiece spray coating equipment according to claim 4, characterized in that: The two shielding mechanisms are respectively arranged on both sides of the first mounting frame, so as to respectively shield the outer side walls between two adjacent blades; The shielding mechanism includes a second mounting frame movably arranged on the support frame in the radial and vertical directions, two baffles arranged on the second mounting frame and respectively abutting against the upper shielding plate and the lower shielding plate, a shielding soft film arranged between the two baffles and used to shield the side walls of the blades and the outer wall of the rotating shaft, and a cooling component arranged between the two baffles and used to cool the blades through the shielding soft film.

6. The ceramic workpiece spray coating equipment according to claim 5, characterized in that: The cooling component includes a support column rotatably and movably arranged on a second mounting frame, a first fitting wall arranged on one side of the support column and used to support the shielding soft film to fit the side wall of the blade without a coating layer, a second fitting wall arranged on the other side of the support column and used to support the shielding soft film to fit the side wall of the blade with the coating layer, a cooling channel arranged in the support column and used to circulate a cooling liquid, an elastic member arranged on the second mounting frame and used to force the support column to move toward the blade, and a pressure sensor arranged on the second mounting frame and used to sense the elastic force of the elastic member.

7. The ceramic workpiece spray coating equipment according to claim 4, characterized in that: The driving assembly includes two transmission gears respectively arranged on the two spray guns and a driving rack movably arranged on the first mounting frame and respectively meshed with the two transmission gears on both sides.

8. The ceramic workpiece spray coating equipment according to claim 4, characterized in that: The grinding mechanism includes two third mounting frames radially movably arranged on the support frame, a grinding roller rotatably arranged on one of the third mounting frames and used for grinding the upper and lower ends of the blade, and a polishing roller rotatably arranged on the other third mounting frame and used for polishing the upper and lower ends of the blade.

9. The ceramic workpiece spray coating equipment according to claim 3, characterized in that: The conveying mechanism includes a conveying assembly arranged outside the machine base, two guide plates respectively arranged on both sides of the conveying assembly and used to guide the ceramic rotor to the middle of the conveying assembly, and a positioning plate arranged between the two guide plates, and the positioning plate is inserted between two adjacent blades and abuts against the side walls of the two blades, thereby positioning the shaft hole.

10. The ceramic workpiece spray coating equipment according to claim 3, characterized in that: The support assembly includes a support rod movably arranged up and down, a plurality of support blocks equidistantly spaced along the circumference of the axial hole and radially movably arranged on the support rod, and a push rod movably arranged inside the support rod and slidably connected to a push groove on the support block, so that the support block moves radially inward or outward with the movement of the push rod.

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