Substrate preheating and spraying integrated device for low-porosity nano ceramic coating

Abstract

The invention belongs to the technical field of nano coating spraying, and particularly relates to a low-porosity nano ceramic coating base material preheating and spraying integrated device which comprises a rack, a three-axis moving module and a positioning mechanism are arranged on the rack, a spraying gun head is arranged at the output end of the three-axis moving module, a base material is clamped and fixed to the positioning mechanism, and the spraying gun head is arranged at the output end of the three-axis moving module. A heating electric device is arranged on the side, in the spraying advancing direction, of the spraying gun head, and the position, located in the circumferential direction of the spraying gun head, of the heating electric device changes along with the spraying advancing direction of the spraying gun head. According to the base material preheating and spraying integrated device for the low-porosity nano ceramic coating in the technical scheme, the base material preheating function and the base material spraying function are integrated, spraying work is carried out after preheating operation is carried out on the base material, thermal stress between the coating and the base material is reduced by precisely preheating the base material, and the coating quality is improved. The binding force between the base material and the coating is improved, and the probability of generating pores is reduced, so that the requirement of low porosity of the nano ceramic coating is met.

Description

Technical Field

[0001] This invention belongs to the field of nano-coating spraying technology, and particularly relates to an integrated device for preheating and spraying a substrate for low-porosity nano-ceramic coatings. Background Technology

[0002] In industrial production, nano-ceramic coating technology is often used to improve the surface properties of parts. Nano-ceramic coatings possess excellent properties such as high strength, high hardness, wear resistance, and corrosion resistance, which can significantly extend the service life of parts. However, current technologies suffer from problems such as insufficient adhesion between the substrate and the coating, and high coating porosity, which affect the service life and performance of parts.

[0003] In existing technologies, the aforementioned problems are often addressed by preheating the substrate separately or optimizing the spraying process parameters. When preheating separately, because the preheating and spraying processes are independent, it is difficult to precisely control the matching of the preheating temperature with the spraying process. This often results in the substrate temperature being too high or too low. Too high a temperature can damage the substrate's performance, while too low a temperature fails to effectively improve the adhesion between the substrate and the coating. While optimizing process parameters can improve coating quality to some extent, it cannot fundamentally solve the problems of adhesion and porosity.

[0004] To address the aforementioned issues, an integrated device for preheating and spraying a substrate with a low-porosity nano-ceramic coating was designed. Summary of the Invention

[0005] To address the problems in the prior art, the present invention proposes the following technical solution:

[0006] An integrated device for preheating and spraying a substrate with low porosity nano-ceramic coating includes a frame, on which a three-axis moving module and a positioning mechanism are mounted. The output end of the three-axis moving module is equipped with a spray gun head. The positioning mechanism clamps and fixes a substrate. A heating element is mounted on one side of the spray gun head in the spraying direction. The position of the heating element in the circumferential direction of the spray gun head changes with the spraying direction of the spray gun head.

[0007] The spray gun head is connected to the output end of the three-axis moving module through a spray head base. There is a gap A between the lower part of the spray head base and the spray gun head. A section of the spray gun head located inside the gap A is rotatably fitted with a sleeve. A base plate is provided on the sleeve. The base plate extends to the outside of the gap A and is assembled with a heating element.

[0008] As a preferred embodiment of the above technical solution, the sleeve is fixedly fitted with a first gear, the first gear meshes with a second gear, a motor is assembled in the gap A, and the output end of the motor is connected to the second gear.

[0009] As a preferred embodiment of the above technical solution, multiple heating electrical devices are provided, and the multiple heating electrical devices are arranged in a straight line at equal intervals.

[0010] As a preferred embodiment of the above technical solution, the upper ends of the plurality of heating electrical devices are connected to the same deformation plate one, the two ends of the deformation plate one are connected to the same deformation plate two, and there is a gap B between the deformation plate one and the deformation plate two.

[0011] An electric telescopic rod is provided on the substrate. The electric telescopic rod passes through the second deformation plate and extends into the gap B. The output end of the electric telescopic rod in the gap B is connected to a model plate, and the assembly end of the telescopic rod is connected to the second deformation plate.

[0012] As a preferred embodiment of the above technical solution, the cross-sectional shape of the model plate matches the cross-sectional shape of the substrate to be preheated and sprayed.

[0013] As a preferred embodiment of the above technical solution, the output end of the electric telescopic rod is connected to a column, the inside of which is provided with longitudinally distributed screw holes, and the upper end of the column extends radially outward to form a step.

[0014] The screw hole is threaded with a screw rod, one end of which is connected to a pressure plate. The column is fitted with a model plate, and the step and the pressure plate abut against the two end faces of the model plate, respectively.

[0015] The beneficial effects of this invention are as follows:

[0016] 1. The integrated substrate preheating and spraying device for low porosity nano-ceramic coating in this technical solution integrates substrate preheating and substrate spraying functions. After preheating the substrate, the spraying operation is performed. By accurately preheating the substrate, the thermal stress between the coating and the substrate is reduced, the bonding force between the substrate and the coating is improved, and the probability of pore formation is reduced, thereby achieving the requirement of low porosity for nano-ceramic coating.

[0017] 2. In this technical solution, the heating element is located on one side of the spray gun head in the spraying direction. Spraying is performed after the substrate is preheated, which does not affect the cooling of the coating after spraying. The position of the heating element in the circumferential direction of the spray gun head changes with the spraying direction of the spray gun head. For example, when the spray gun head moves forward to perform spraying, the heating element moves to the front position of the spray gun head. The setting of changing the position of the heating element in real time meets the setting requirements of the spray gun head moving and spraying in multiple directions. Attached Figure Description

[0018] Figure 1 The diagram shown is a schematic diagram of the integrated preheating and spraying device for low-porosity nano-ceramic coating in Example 1.

[0019] Figure 2 What is shown is Figure 1 Enlarged schematic diagram of a local part of the structure;

[0020] Figure 3 What is shown is Figure 2 Schematic diagram of the cross section of AA;

[0021] Figure 4 What is shown is Figure 3 Enlarged schematic diagram of a local part of the structure.

[0022] Reference numerals: Frame 10; Three-axis moving module 11; Positioning mechanism 12; Substrate 20; Spray gun head 30; Heating electrical components 40;

[0023] Nozzle base 51; Gap A 52; Sleeve 53; Gear 1 54; Gear 2 55; Motor 56; Base plate 57;

[0024] 61. Electric telescopic rod; 62. Deformation plate one; 63. Deformation plate two; 64. Gap B; 65. Model plate;

[0025] 71. Column 1; 72. Screw hole; 73. Step; 74. Pressure plate; 75. Screw. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0027] Example 1

[0028] like Figure 1 , Figure 2 As shown, the integrated device for preheating and spraying a low-porosity nano-ceramic coating substrate includes a frame 10. The frame 10 is equipped with a three-axis moving module 11 and a positioning mechanism 12. The output end of the three-axis moving module 11 is equipped with a spray gun head 30. The positioning mechanism 12 clamps and fixes the substrate 20. The three-axis moving module 11 drives the spray gun head 30 to move and spray in multiple directions (front, back, left, and right). The positioning mechanism 12 fixes the substrate to be preheated and sprayed. The spray gun head 30 sprays the substrate to form a nano-ceramic coating on the substrate surface. In this embodiment, the three-axis moving module 11, the positioning mechanism 12, and the spray gun head 30 all adopt conventional means in the prior art to achieve the specific functional requirements of this technical solution, which will not be elaborated here.

[0029] A heating element 40 is provided on one side of the spray gun head 30 in the spraying direction. The position of the heating element 40 in the circumferential direction of the spray gun head 30 changes with the spraying direction of the spray gun head 30.

[0030] The spray gun head 30 is connected to the output end of the three-axis moving module 11 via a spray gun base 51. There is a gap A52 between the lower part of the spray gun base 51 and the spray gun head 30. A section of the spray gun head 30 located inside the gap A52 is rotatably fitted with a sleeve 53. A base plate 57 is provided on the sleeve 53. The base plate 57 extends to the outside of the gap A52 and is assembled with the heating element 40. When it is necessary to change the position of the heating element 40, the heating element 40, the base plate 57, and the sleeve 53 are controlled to rotate relative to the spray gun head 30, thereby changing the position of the heating element 40 in the circumferential direction of the spray gun head 30.

[0031] The integrated substrate preheating and spraying device for low-porosity nano-ceramic coating in this technical solution integrates substrate preheating and substrate spraying functions. After preheating the substrate, the spraying operation is performed. By accurately preheating the substrate, the thermal stress between the coating and the substrate is reduced, the bonding force between the substrate and the coating is improved, and the probability of pore formation is reduced, thereby achieving the requirement of low porosity for nano-ceramic coating.

[0032] In this technical solution, the heating element 40 is located on one side of the spray gun head 30 in the spraying direction. After preheating the substrate, the spraying operation is carried out without affecting the cooling of the coating after spraying. Furthermore, the position of the heating element 40 in the circumferential direction of the spray gun head 30 changes with the spraying direction of the spray gun head 30. For example, when the spray gun head 30 moves forward to perform spraying, the heating element 40 moves to the front position of the spray gun head 30. The setting of real-time change of the position of the heating element 40 meets the setting requirements of the spray gun head 30 moving and spraying in multiple directions.

[0033] To achieve the requirement that the position of the heating element 40 in the circumferential direction of the spray gun head 30 changes in real time according to the spraying direction of the spray gun head 30, such as Figure 1 , Figure 2 As shown, a gear 54 is fixedly sleeved on the sleeve 53, and a gear 55 meshes with the gear 54. A motor 56 is assembled in the gap A52, and the output end of the motor 56 is connected to the gear 55.

[0034] When the position of the heating element 40 needs to be changed, the control motor 56 is powered on and started, driving the gear 2 55 to rotate. Through the meshing of the gear 1 54 and the gear 2 55, the sleeve 53, the substrate 57 and the heating element 40 are driven to rotate synchronously, so as to change the position of the heating element 40 in the circumferential direction of the spray gun head 30.

[0035] Example 2

[0036] like Figure 1 , Figure 2As shown, the integrated device for preheating and spraying a substrate with low porosity nano-ceramic coating includes a frame 10, on which a three-axis moving module 11 and a positioning mechanism 12 are provided. The output end of the three-axis moving module 11 is provided with a spray gun head 30. The positioning mechanism 12 clamps and fixes a substrate 20. A heating element 40 is provided on one side of the spray gun head 30 in the spraying direction. The position of the heating element 40 in the circumferential direction of the spray gun head 30 changes with the spraying direction of the spray gun head 30.

[0037] The spray gun head 30 is connected to the output end of the three-axis moving module 11 via a spray head base 51. There is a gap A52 between the lower part of the spray head base 51 and the spray gun head 30. A section of the spray gun head 30 located inside the gap A52 is rotatably fitted with a sleeve 53. A base plate 57 is provided on the sleeve 53. The base plate 57 extends to the outside of the gap A52 and is assembled with a heating element 40. The heating element 40 is rotatably set around the spray gun head 30. When it is necessary to change the position of the heating element 40, the heating element 40, the base plate 57, and the sleeve 53 are controlled to rotate relative to the spray gun head 30, thereby changing the position of the heating element 40 in the circumferential direction of the spray gun head 30.

[0038] The integrated substrate preheating and spraying device for low-porosity nano-ceramic coating in this technical solution integrates substrate preheating and substrate spraying functions. After preheating the substrate, the spraying operation is performed. By accurately preheating the substrate, the thermal stress between the coating and the substrate is reduced, and the probability of pore formation is reduced, thereby achieving the requirement of low porosity for nano-ceramic coating.

[0039] In this technical solution, the heating element 40 is located on one side of the spray gun head 30 in the spraying direction. After preheating the substrate, the spraying operation is carried out without affecting the cooling of the coating after spraying. Furthermore, the position of the heating element 40 in the circumferential direction of the spray gun head 30 changes with the spraying direction of the spray gun head 30. For example, when the spray gun head 30 moves forward to perform spraying, the heating element 40 moves to the front position of the spray gun head 30. The setting of real-time change of the position of the heating element 40 meets the setting requirements of the spray gun head 30 moving and spraying in multiple directions.

[0040] To ensure the preheating effect of the integrated substrate preheating and spraying device for low-porosity nano-ceramic coating in this technical solution, the heating element 40 is further optimized, as follows: Figure 3 As shown, multiple heating electrical devices 40 are provided, and the multiple heating electrical devices 40 are arranged in a straight line at equal distances. The arrangement of multiple heating electrical devices 40 increases the preheating area of ​​the substrate and improves the preheating efficiency.

[0041] like Figure 3As shown, the upper ends of multiple heating electrical devices 40 are connected to the same deformation plate 62, and both ends of the deformation plate 62 are connected to the same deformation plate 63. A gap B64 exists between the deformation plate 62 and the deformation plate 63. An electric telescopic rod 61 is provided on the base plate 57. The electric telescopic rod 61 passes through the deformation plate 63 and extends into the gap B64. The output end of the electric telescopic rod 61, located in the gap B64, is connected to a model plate 65. Figure 3 As shown, the cross-sectional shape of the model plate 65 matches the cross-sectional shape of the substrate 20 to be preheated and sprayed, and the assembly end of the telescopic rod 61 is connected to the deformation plate 63.

[0042] In this technical solution, before preheating the substrate, the overall arrangement of multiple heating elements 40 is adjusted according to the cross-sectional shape of the substrate. Specifically, the substrate is placed below the heating elements 40, and a model plate 65 matching the substrate is assembled with the output end of the electric telescopic rod 61. The overall length of the electric telescopic rod 61 is extended, driving the model plate 65 to move downward and compressing the multiple heating elements 40. Under the matching clamping of the model plate 65 and the substrate, the multiple heating elements 40 form a shape matching the cross-section of the substrate, which can be a straight line arrangement, a broken line arrangement, a curved arrangement, etc.

[0043] In this technical solution, the model plate 65 is selected according to the cross-sectional shape of the substrate. The model plate 65 compresses the deformable deformation plate 62 (at this time, the deformation plate 63, which mainly plays a connecting role, also undergoes a certain degree of deformation along with the deformation plate 62), so that the overall shape of the multiple heating electrical devices 40 tends to be consistent with the cross-sectional shape of the substrate, ensuring the preheating effect of the substrate. At the same time, the model plate 65 has a supporting and shaping function.

[0044] To achieve the requirement of selecting the model plate 65 according to different substrate cross-sectional shapes, a movable assembly is adopted between the model plate 65 and the output end of the electric telescopic rod 61, such as... Figure 3 , Figure 4 As shown, the output end of the electric telescopic rod 61 is connected to a column 71. The column 71 has longitudinally distributed screw holes 72 inside, and its upper end extends radially outward to form a step 73. A screw 75 is threaded into the screw holes 72, and one end of the screw 75 is connected to a pressure plate 74. When assembling the model plate 65 with the output end of the electric telescopic rod 61, the column 71 is fitted onto the model plate 65, and the screw 75 is threaded into the screw holes 72 until the step 73 and the pressure plate 74 respectively abut against the two end faces of the model plate 65. The operation is simple and the fixing is convenient.

[0045] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it.

Claims

1. An integrated device for preheating and spraying a substrate with a low-porosity nano-ceramic coating, comprising a frame (10), wherein a three-axis moving module (11) and a positioning mechanism (12) are provided on the frame (10), a spray gun head (30) is provided at the output end of the three-axis moving module (11), and a substrate (20) is clamped and fixed by the positioning mechanism (12), characterized in that, The spray gun head (30) is provided with a heating element (40) on one side of the spraying direction. The position of the heating element (40) in the circumferential direction of the spray gun head (30) changes with the spraying direction of the spray gun head (30). The spray gun head (30) is connected to the output end of the three-axis moving module (11) through the nozzle base (51). There is a gap A (52) between the lower part of the nozzle base (51) and the spray gun head (30). A sleeve (53) is rotatably fitted to a section of the spray gun head (30) located inside the gap A (52). A base plate (57) is provided on the sleeve (53). The base plate (57) extends to the outside of the gap A (52) and is assembled with the heating electric device (40).

2. The integrated preheating and spraying device for low-porosity nano-ceramic coatings according to claim 1, characterized in that, The sleeve (53) is fixedly fitted with a gear one (54), the gear one (54) meshes with a gear two (55), and a motor (56) is assembled in the gap A (52), the output end of the motor (56) is connected to the gear two (55).

3. The integrated preheating and spraying device for low-porosity nano-ceramic coatings according to claim 1, characterized in that, Multiple heating electrical devices (40) are provided, and the multiple heating electrical devices (40) are arranged in a straight line at equal distances.

4. The integrated preheating and spraying device for low-porosity nano-ceramic coatings according to claim 3, characterized in that, The upper ends of the plurality of heating electrical devices (40) are connected to the same deformation plate one (62), and the two ends of the deformation plate one (62) are connected to the same deformation plate two (63). There is a gap B (64) between the deformation plate one (62) and the deformation plate two (63). An electric telescopic rod (61) is provided on the substrate (57). The electric telescopic rod (61) passes through the second deformation plate (63) and extends into the gap B (64). The output end of the electric telescopic rod (61) located in the gap B (64) is connected to the model plate (65). The assembly end of the telescopic rod (61) is connected to the second deformation plate (63).

5. The integrated preheating and spraying device for low-porosity nano-ceramic coatings according to claim 4, characterized in that, The cross-sectional shape of the model plate (65) matches the cross-sectional shape of the substrate (20) to be preheated and sprayed.

6. The integrated preheating and spraying device for low-porosity nano-ceramic coatings according to claim 4, characterized in that, The output end of the electric telescopic rod (61) is connected to a column (71), and the inside of the column (71) is provided with longitudinally distributed screw holes (72). The upper end of the column (71) extends radially outward to form a step (73). The screw hole (72) is threaded with a screw (75), one end of which is connected to a pressure plate (74). The column (71) is fitted with a model plate (65), and the step (73) and the pressure plate (74) abut against the two end faces of the model plate (65) respectively.

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