Numerical control plasma spraying machine

Abstract

The invention discloses a numerical control plasma spraying machine, relates to the field of plasma spraying, and solves the problem that an existing plasma spraying machine is difficult to support and position a bottle-shaped product with a large inner diameter size, the numerical control plasma spraying machine comprises a workbench and a spraying piece, a T-shaped support is installed at the top of the workbench, an L-shaped support is installed at the top of the T-shaped support, and a plurality of spraying holes are formed in the spraying piece. Two electric telescopic rods are fixedly mounted at one end of the L-shaped support, a mounting pipe is arranged between the output ends of the electric telescopic rods, four clamping rods are assembled on the outer side of the mounting pipe in a hinged mode, and a workpiece is arranged at the top of the workbench; the inner supporting mechanism is used for supporting and positioning the inner side of the workpiece, and the inner supporting mechanism is mounted at the bottom end of the mounting pipe; the inner supporting mechanism and the mounting pipe are inserted into the inner side of the workpiece from the opening of the bottle-shaped workpiece, so that the multiple clamping rods are opened outwards in an umbrella shape and make contact with the inner side of the workpiece, supporting and positioning of the workpiece are achieved, and the effect of rapid supporting and positioning is achieved.

Description

Technical Field

[0001] The present invention relates to the field of plasma spraying, and more particularly to a numerically controlled plasma spraying machine. Background Art

[0002] A plasma spraying machine is a device that uses a plasma arc to generate a high-temperature and high-speed plasma jet, heats powder materials to a molten or semi-molten state, and sprays them onto the surface of a substrate to form a coating, enabling the substrate surface to have properties such as wear resistance, corrosion resistance, high-temperature oxidation resistance, electrical insulation, heat insulation, radiation protection, friction reduction, and sealing, and is widely used in fields such as aerospace, automotive, and new energy.

[0003] When performing plasma spraying on bottle-shaped products, a retractable pressure rod is usually required to press the end of the assembled product, and when the spraying part sprays the bottle-shaped product, the pressure rod drives the bottle-shaped product to rotate to achieve uniform spraying of the bottle-shaped product. When moving the pressure rod of the existing spraying machine, the pressure rod needs to contact the inner wall of the bottom of the bottle-shaped product to make the pressing plates at both ends of the pressure rod pop out to press and position the inner side of the bottle-shaped product. If the bottle mouth of the bottle-shaped product is small and the inner diameter is large, it is difficult for the pressing plates on both sides of the pressure rod to contact the inner side of the bottle-shaped product, so the bottle-shaped product cannot rotate smoothly, and it is difficult to achieve uniform spraying of the bottle-shaped product. Summary of the Invention

[0004] The purpose of the present invention is to provide a numerically controlled plasma spraying machine to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solutions: A numerically controlled plasma spraying machine, comprising: a workbench and a spraying part fixedly installed on the top of the workbench, a T-shaped bracket is fixedly installed on the top of the workbench, an L-shaped bracket is fixedly installed on the top of the T-shaped bracket, two symmetrically distributed electric telescopic rods are fixedly installed at one end of the L-shaped bracket, an installation pipe is arranged between the output ends of the electric telescopic rods, four centrally symmetrically distributed clamping rods are hinged and assembled on the outer side of the installation pipe, and a workpiece to be sprayed is arranged on the top of the workbench; It further includes: An inner support mechanism for supporting and positioning the inner side of the workpiece, and the inner support mechanism is installed at the bottom end of the installation pipe; A suspension mechanism for suspending and spraying the workpiece with a longer length, and the suspension mechanism is installed inside the installation pipe; A rotary spraying mechanism for uniformly spraying the fixed workpiece, and the rotary spraying mechanism is installed on the top of the T-shaped bracket.

[0006] Preferably, the inner support mechanism includes a pressing block arranged at the bottom end of the installation pipe. One end of the clamping rod away from the installation pipe is hinged and assembled with a push rod. One end of the push rod away from the clamping rod is hinged and assembled on the outer side of the pressing block. A positioning sleeve seat is fixedly installed on the outer side of the clamping rod. An L-shaped plate is fixedly installed between one end of the clamping rod close to the push rod and the positioning sleeve seat. A pressing strip is fixedly installed on the outer side of the L-shaped plate. A plurality of anti-slip lines are equidistantly distributed on the outer side of the pressing strip. A spring is fixedly installed between the top end of the pressing block and the bottom end of the installation pipe.

[0007] Preferably, the suspension mechanism includes a guide pipe slidably installed inside the installation pipe. The bottom end of the guide pipe is fixedly installed on the top of the pressing block. A sliding rod is slidably installed inside the guide pipe. The bottom end of the sliding rod is fixedly installed with a slider. A sliding cavity for the slider to slide and be limited is opened inside the guide pipe. One end of the sliding rod away from the slider is fixedly installed at the bottom of the L-shaped bracket. The outer diameter of the slider is larger than that of the sliding rod. A support plate is fixedly installed between the output ends of the two electric telescopic rods. A circular hole for the guide pipe to slide and be limited is opened on the surface of the support plate. A circular sleeve is fixed at the bottom of the support plate. A positioning ring is slidably installed inside the circular sleeve. The positioning ring is fixedly installed on the outer side of the installation pipe.

[0008] Preferably, the jet grouting mechanism includes a fixed plate fixedly installed on the outer side of the L-shaped bracket. A driving motor is fixedly installed on the top of the fixed plate. The output end of the driving motor is fixedly installed with a driving gear. The driving gear is located below the fixed plate. A driven gear is slidably installed on the outer side of the installation pipe. The driven gear is rotatably installed at the bottom of the fixed plate. A plurality of sliding strips are fixedly installed inside the driven gear in a centrosymmetric distribution. A long strip chute for the sliding strips to slide and be limited is opened on the outer side of the installation pipe. A synchronous toothed belt is rotatably installed between the driven gear and the driving gear.

[0009] Preferably, an adjusting turntable is rotatably installed on the outer side of the T-shaped bracket. A plurality of placing plates are rotatably installed on the top of the adjusting turntable in a centrosymmetric distribution. Anti-slip grooves are opened on the top of the placing plates. The horizontal height of the placing plates is higher than that of the adjusting turntable. The workpiece is located on the top of any one of the placing plates.

[0010] Preferably, a plurality of sliding beads are fixedly installed at the bottom of the placing plate in a centrosymmetric distribution. An annular groove for the sliding beads to slide and be limited is opened inside the adjusting turntable.

[0011] Preferably, a mounting column is rotatably mounted on the outer side of the T-shaped bracket, and the mounting column is fixedly mounted on the top of the adjusting dial. A plurality of arc grooves symmetrically distributed in the center are opened on the outer side of the mounting column, and the number of the arc grooves is the same as the number of the placement plates. A heat-resistant sleeve is fixedly mounted on the outer side of the mounting column.

[0012] Preferably, an arc-shaped stop block is fixedly mounted on one end of the pressing block away from the spring, and the end of the arc-shaped stop block away from the pressing block is an arc-shaped structure.

[0013] Preferably, a plurality of limiting strips symmetrically distributed in the center are fixedly mounted on the inner side of the mounting tube, and a limiting groove for limiting the sliding of the limiting strips is provided on the outer side of the guide tube.

[0014] Preferably, two symmetrically distributed positioning plates are fixedly installed between the bottom of the fixing plate and the top of the T-shaped bracket.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The present invention uses an internal support mechanism, and a mounting tube can be inserted into the inner side of the workpiece from the bottle-shaped opening of the workpiece, so that a plurality of clamping rods are spread outward in an umbrella shape and contact the inner side of the workpiece, thereby achieving support and positioning of the inner side of the workpiece, facilitating spraying of the workpiece by the spraying part, and solving the problem that traditional spray machines are difficult to fix workpieces with larger inner diameters, thereby achieving the effect of rapid support and positioning.

[0016] The present invention uses a suspension mechanism so that when the slider contacts the top inner wall of the guide tube, the slider pulls the guide tube to move upward, thereby realizing the swinging and opening of the clamp rod, so that the pressure block supports and positions the inner side of the workpiece without contacting the inner side of the workpiece. The present invention is suitable for use with workpieces of longer lengths, thereby facilitating the support and positioning of workpieces of greater lengths.

[0017] The present invention uses a rotary spraying mechanism, which can move along the inner side of the driven gear and the outer side of the slide bar when the mounting tube moves, and drives the driving gear to rotate through a driving motor, so that the driving gear realizes the rotation of the driven gear through a synchronous toothed belt, and the driven gear can drive the mounting tube to rotate through the slide bar, so that the supported and positioned workpiece is in a rotating state, which is convenient for the spraying part to evenly spray the outer side of the workpiece, thereby achieving a rapid spraying effect and improving the processing efficiency of the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the L-shaped bracket and the pressing block structure in the present invention; Figure 3 It is a schematic diagram of the structure of the installation tube and the guide tube in the present invention; Figure 4Schematic diagram of the clamping rod and pressing strip structure in the present invention; Figure 5 Schematic diagram of the sliding rod and slider structure in the present invention; Figure 6 Schematic diagram of the fixed plate and support plate structure in the present invention; Figure 7 is Figure 6 magnified structural schematic diagram of area A in; Figure 8 Schematic diagram of the placement tray and sliding bead structure in the present invention.

[0019] In the figure: 1, workbench; 2, spraying part; 3, T-shaped bracket; 4, L-shaped bracket; 5, electric telescopic rod; 6, installation pipe; 7, clamping rod; 8, workpiece; 9, pressing block; 10, push rod; 11, L-shaped plate; 12, pressing strip; 13, spring; 14, guide pipe; 15, sliding rod; 16, slider; 17, support plate; 18, annular sleeve; 19, positioning ring; 20, fixed plate; 21, driving gear; 22, driven gear; 23, sliding strip; 24, synchronous toothed belt; 25, positioning sleeve seat; 26, adjusting turntable; 27, placement tray; 28, sliding bead; 29, installation column; 30, heat-resistant sleeve; 31, arc-shaped abutting block; 32, limiting strip; 33, positioning plate; 34, driving motor. Specific embodiments

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0021] Embodiment 1: Please refer to Figures 1-8A CNC plasma spraying machine shown in the figure includes a workbench 1 and a spraying part 2 fixedly installed on the top of the workbench 1. A T-shaped bracket 3 is fixedly installed on the top of the workbench 1. The top of the T-shaped bracket 3 is disc-shaped. An L-shaped bracket 4 is fixedly installed on the top of the T-shaped bracket 3. The L-shaped bracket 4 is a retractable structure. Two symmetrically distributed electric telescopic rods 5 are fixedly installed at one end of the L-shaped bracket 4. A mounting tube 6 is arranged between the output ends of the electric telescopic rod 5. The output end of the electric telescopic rod 5 can drive the mounting tube 6 to move vertically up and down. The mounting tube 6 The outer side of the T-shaped bracket 3 is hingedly equipped with four clamping rods 7 which are symmetrically distributed in the center. A workpiece 8 to be sprayed is arranged on the top of the workbench 1. The mounting tube 6 can be inserted from the top opening of the workpiece 8, so that multiple clamping rods 7 are umbrella-shaped against the inner side of the workpiece 8 to achieve support and positioning of the workpiece 8. An adjusting turntable 26 is rotatably installed on the outer side of the T-shaped bracket 3. Multiple placement plates 27 which are symmetrically distributed in the center are rotatably installed on the top of the adjusting turntable 26. The top of the placement plate 27 is provided with an anti-skid groove to prevent the workpiece 8 from slipping. The horizontal height of the placement plate 27 is higher than the water level of the adjusting turntable 26. The flat height is convenient for placing the workpiece 8. The workpiece 8 is located on the top of any placement plate 27. A plurality of sliding balls 28 symmetrically distributed in the center are fixedly installed at the bottom of the placement plate 27. An annular groove for limiting the sliding of the sliding balls 28 is provided on the inner side of the adjusting turntable 26. The workpiece 8 can be on the top of the placement plate 27, and the anti-skid groove on the top of the placement plate 27 is used to enable the workpiece 8 to drive the placement plate 27 to rotate. The placement plate 27 drives the sliding balls 28 to rotate along the annular groove on the adjusting turntable 26 to prevent the friction between the placement plate 27 and the workpiece 8 from being too large, which is not conducive to the workpiece 8. In order to prevent wear and tear, the T-shaped bracket 3 is provided with a mounting column 29 which is rotatably mounted on the outside of the T-shaped bracket 3. The mounting column 29 is fixedly mounted on the top of the adjusting turntable 26. A plurality of arc grooves which are centrally symmetrically distributed are provided on the outside of the mounting column 29. The number of the arc grooves is the same as the number of the placement disks 27, and the positions of the arc grooves and the placement disks 27 correspond. A heat-resistant sleeve 30 is fixedly mounted on the outside of the mounting column 29 to provide shielding and protection for the sprayed part 2. The mounting column 29 also includes an inner support mechanism for supporting and positioning the inner side of the workpiece 8. The inner support mechanism is mounted on the bottom end of the mounting tube 6. The inner support mechanism includes a pressing block 9 arranged at the bottom end of the installation pipe 6. One end of the clamping rod 7 far away from the installation pipe 6 is hinged and assembled with a push rod 10. One end of the push rod 10 far away from the clamping rod 7 is hinged and assembled on the outer side of the pressing block 9. When the pressing block 9 contacts the inner side of the workpiece 8, it can push the push rod 10 to move, so that the push rod 10 pushes the clamping rod 7 to swing. Multiple clamping rods 7 can be in an umbrella shape and be close to the inner side of the workpiece 8. A positioning sleeve seat 25 is fixedly installed on the outer side of the clamping rod 7. An L-shaped plate 11 is fixedly installed between one end of the clamping rod 7 close to the push rod 10 and the positioning sleeve seat 25. A pressing strip 12 is fixedly installed on the outer side of the L-shaped plate 11. The pressing strip 12 is in an L-shaped structure. When the clamping rod 7 swings, the pressing strip 12 can contact the inner side of the workpiece 8 to realize the support and positioning of the workpiece 8. A plurality of anti-slip lines are arranged at equal intervals on the outer side of the pressing strip 12 to increase the friction between the pressing strip 12 and the inner side of the workpiece 8 and improve the firmness of the support of the pressing strip 12 on the inner side of the workpiece 8. A spring 13 is fixedly installed between the top end of the pressing block 9 and the bottom end of the installation pipe 6. When the pressing block 9 moves upward, it can compress the spring 13. When the pressing block 9 is far away from the inner side of the workpiece 8, the resilience of the spring 13 can be used to reset the pressing block 9, and then the clamping rod 7 can be retracted. An arc-shaped abutting block 31 is fixedly installed at one end of the pressing block 9 far away from the spring 13. The pressing block 9 can contact the inner side of the workpiece 8 through the arc-shaped abutting block 31. One end of the arc-shaped abutting block 31 far away from the pressing block 9 is in a circular arc structure, which is convenient for aligning the arc-shaped abutting block 31 with the opening of the workpiece 8.

[0022] Embodiment 2: Please refer to Figures 2-7, this embodiment further elaborates on Embodiment 1. The suspension mechanism shown in the figure includes a guide tube 14 slidably installed inside the installation tube 6. The bottom end of the guide tube 14 is fixedly installed on the top of the pressing block 9. When the pressing block 9 moves, it can drive the guide tube 14 to move along the inside of the installation tube 6. A plurality of limiting strips 32 distributed symmetrically about the center are fixedly installed inside the installation tube 6. A limiting groove for the limiting strips 32 to slide is provided on the outer side of the guide tube 14. When the installation tube 6 rotates, it can drive the guide tube 14 to rotate through the limiting strips 32 and provide guidance for the movement of the guide tube 14. A sliding rod 15 is slidably installed inside the guide tube 14. One end of the sliding rod 15 extends to the outside of the guide tube 14. The bottom end of the sliding rod 15 is fixedly installed with a slider 16. A sliding cavity for the slider 16 to slide is provided inside the guide tube 14. The slider 16 is of a cylindrical structure, so that when the guide tube 14 rotates, it can rotate along the outside of the slider 16. The end of the sliding rod 15 away from the slider 16 is fixedly installed at the bottom of the L-shaped bracket 4. The outer diameter of the slider 16 is larger than the outer diameter of the sliding rod 15, so that when the installation tube 6 moves downward, it can drive the guide tube 14 to move, and the guide tube 14 can move along the outside of the slider 16. When the inner wall of the top of the guide tube 14 contacts the top of the slider 16, the resistance of the slider 16 can be used to pull the guide tube 14 to move along the inside of the installation tube 6, and the pressing block 9 can lean against the bottom end of the installation tube 6, realizing the swing of the clamping rod 7, which is convenient for using workpieces 8 with larger lengths. A support plate 17 is fixedly installed between the output ends of the two electric telescopic rods 5. A circular hole for the guide tube 14 to slide is provided on the surface of the support plate 17, so that when the pressing block 9 moves upward, the guide tube 14 can move along the inside of the circular hole on the support plate 17. A circular sleeve 18 is fixed to the bottom of the support plate 17. A positioning ring 19 is slidably installed inside the circular sleeve 18. The positioning ring 19 is fixedly installed on the outside of the installation tube 6, so that the output end of the electric telescopic rod 5 can push the support plate 17 to move, and the support plate 17 can push the installation tube 6 to move synchronously through the circular sleeve 18 and the positioning ring 19.

[0023] Embodiment 3: Please refer to Figure 2 , Figure 6 and Figure 7, this embodiment further illustrates other embodiments. The jet grouting mechanism in the figure includes a fixed plate 20 fixedly installed on the outside of the L-shaped bracket 4. Between the bottom of the fixed plate 20 and the top of the T-shaped bracket 3, two symmetrically distributed positioning plates 33 are fixedly installed. The top of the fixed plate 20 is fixedly installed with a driving motor 34. The output end of the driving motor 34 is fixedly installed with a driving gear 21. The driving motor 34 can drive the driving gear 21 to rotate. The driving gear 21 is located below the fixed plate 20. A driven gear 22 is slidably installed on the outside of the installation pipe 6. The driven gear 22 is rotatably installed at the bottom of the fixed plate 20. The inside of the driven gear 22 is fixedly installed with a plurality of centrally symmetrically distributed sliding strips 23. A long strip chute for the sliding strips 23 to be limited and slide is opened on the outside of the installation pipe 6. When the driven gear 22 rotates, the driven gear 22 can drive the installation pipe 6 to rotate through the sliding strips 23. Moreover, when the installation pipe 6 makes a vertical movement, the long strip chute on its outside can move along the outside of the sliding strips 23. A synchronous toothed belt 24 is rotatably installed between the driven gear 22 and the driving gear 21. The driving gear 21 can drive the driven gear 22 to rotate through the synchronous toothed belt 24.

[0024] Working principle: First, the worker places the workpiece 8 on the placement plate 27, rotates the adjustment turntable 26, and the adjustment turntable 26 drives the placement plate 27 to perform a circular motion, so that the workpiece 8 on the placement plate 27 moves to the outside of the spraying part 2 and is directly above the arc-shaped abutting block 31. At this time, the worker starts the electric telescopic rod 5, and the output end of the electric telescopic rod 5 pushes the support plate 17 downward. The support plate 17 drives the annular sleeve 18 to move, so that the annular sleeve 18 pushes the installation pipe 6 to move downward synchronously through the positioning ring 19. The long strip chute on the installation pipe 6 moves downward along the slide bar 23 inside the driven gear 22, and drives the pressing block 9 to move downward through the spring 13. The arc-shaped abutting block 31 at the bottom of the pressing block 9 enters the inside of the workpiece 8 through the opening at the top of the workpiece 8. When the arc-shaped abutting block 31 contacts the inside of the workpiece 8, using the reaction force of the arc-shaped abutting block 31 on the pressing block 9, the pressing block 9 compresses the spring 13 at the bottom end of the installation pipe 6. At the same time, the pressing block 9 drives the push rod 10 to move synchronously, so that the push rod 10 pushes the clamping rod 7 to swing upward, and multiple clamping rods 7 swing synchronously in an umbrella shape. The pressing strip 12 at the end of the clamping rod 7 contacts the inside of the workpiece 8, realizing the support and positioning of the inside of the workpiece 8. Then, the worker turns off the electric telescopic rod 5, makes the output end of the electric telescopic rod 5 stationary, and starts the driving motor 34. The driving motor 34 drives the driving gear 21 to rotate, so that the driving gear 21 drives the driven gear 22 to rotate through the synchronous toothed belt 24. The driven gear 22 drives the installation pipe 6 to rotate through the slide bar 23 and the long strip chute on the outside of the installation pipe 6. The installation pipe 6 drives the positioning ring 19 to rotate inside the annular sleeve 18. The installation pipe 6 drives the guide pipe 14 to rotate through the limiting strip 32, so that the guide pipe 14 drives the pressing block 9 to rotate synchronously. The installation pipe 6 and the pressing block 9 can drive the clamping rod 7 and the push rod 10 to rotate synchronously respectively, so that the pressing strip 12 drives the workpiece 8 to be in a rotating state, and using the anti-slip groove on the top of the placement plate 27, the workpiece 8 can drive the placement plate 27 to rotate. The placement plate 27 drives the sliding beads 28 to rotate along the annular groove on the adjustment turntable 26, preventing the friction between the placement plate 27 and the workpiece 8 from being too large and causing wear to the workpiece 8, providing protection for the workpiece 8. At the same time, the spraying part 2 sprays the rotating workpiece 8. Finally, the worker turns off the driving motor 34 and starts the electric telescopic rod 5, so that the installation pipe 6 stops rotating, and the electric telescopic rod 5 pulls the installation pipe 6 back to its original position. Using the resilience of the spring 13, the clamping rod 7 moves away from the inside of the workpiece 8, and as the output end of the electric telescopic rod 5 retracts, the installation pipe 6 and the pressing block 9 move out of the inside of the workpiece 8. The worker rotates the adjustment turntable 26, so that the sprayed workpiece 8 leaves the spraying part 2, and another workpiece 8 to be sprayed can be moved to the outside of the spraying part 2, realizing the uniform spraying of the workpiece 8, thus facilitating the spraying process of the workpiece 8 with a larger inner diameter; When the length of the workpiece 8 is relatively long, the staff raises the height of the L-shaped bracket 4, and the electric telescopic rod 5 drives the installation pipe 6 to move downward. The installation pipe 6 drives the guide pipe 14 to move along the outside of the slider 16 through the pressing block 9. When the inner wall of the top of the guide pipe 14 contacts the top of the slider 16, the resistance of the slider 16 to the guide pipe 14 can be utilized to keep the guide pipe 14 stationary, and the installation pipe 6 moves along the outside of the guide pipe 14, so that the bottom end of the installation pipe 6 is close to the top of the pressing block 9. The clamping rod 7 and the push rod 10 swing synchronously, so that the pressing strip 12 is close to the inner side of the workpiece 8, and the inner side of the workpiece 8 is supported and positioned. Thus, the workpiece 8 with a larger length can be supported and positioned, which is convenient for spraying more workpieces 8 with different sizes and improves the convenience of spraying the workpiece 8.

[0025] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variation thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0026] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A CNC plasma spraying machine, characterized in that: include: A workbench (1) and a spraying part (2), a T-shaped bracket (3) is installed on the top of the workbench (1), an L-shaped bracket (4) is installed on the top of the T-shaped bracket (3), two electric telescopic rods (5) are fixedly installed on one end of the L-shaped bracket (4), a mounting tube (6) is arranged between the output ends of the electric telescopic rods (5), and four clamping rods (7) are hingedly assembled on the outer side of the mounting tube (6), and a workpiece (8) is arranged on the top of the workbench (1); Also includes: An inner support mechanism, used for supporting and positioning the inner side of the workpiece (8), the inner support mechanism being mounted on the bottom end of the mounting tube (6); A hanging mechanism, used for hanging and spraying the workpiece (8) of a relatively long length, the hanging mechanism being installed on the inner side of the installation tube (6); A rotary spraying mechanism is used for uniformly spraying the fixed workpiece (8), and the rotary spraying mechanism is installed on the top of the T-shaped bracket (3).

2. A CNC plasma spraying machine according to claim 1, characterized in that: The inner support mechanism comprises a pressure block (9) arranged at the bottom end of the mounting tube (6), one end of the clamping rod (7) is hingedly assembled with a push rod (10), one end of the push rod (10) is hingedly assembled on the outer side of the pressure block (9), a positioning sleeve (25) is fixedly mounted on the outer side of the clamping rod (7), an L-shaped plate (11) is fixedly mounted between one end of the clamping rod (7) and the positioning sleeve (25), a pressure strip (12) is fixedly mounted on the outer side of the L-shaped plate (11), and a plurality of anti-slip grooves are provided on the outer side of the pressure strip (12), and a spring (13) is fixedly mounted between the pressure block (9) and the mounting tube (6).

3. A CNC plasma spraying machine according to claim 2, characterized in that: The suspension mechanism comprises a guide tube (14) slidably mounted on the inner side of the mounting tube (6), the bottom end of the guide tube (14) being mounted on the top of the pressing block (9), a slide rod (15) being slidably mounted on the inner side of the guide tube (14), a slider (16) being fixedly mounted on the bottom end of the slide rod (15), an end of the slide rod (15) away from the slider (16) being fixedly mounted on the bottom of the L-shaped bracket (4), a support plate (17) being fixedly mounted between the output ends of the two electric telescopic rods (5), an annular sleeve (18) being fixedly mounted on the bottom of the support plate (17), a positioning ring (19) being slidably mounted on the inner side of the annular sleeve (18), and the positioning ring (19) being fixedly mounted on the outer side of the mounting tube (6).

4. A CNC plasma spraying machine according to claim 3, characterized in that: The rotary spraying mechanism comprises a fixing plate (20) mounted on the outside of the L-shaped bracket (4), a driving motor (34) is fixedly mounted on the top of the fixing plate (20), a driving gear (21) is fixedly mounted on the output end of the driving motor (34), a driven gear (22) is slidably mounted on the outside of the mounting tube (6), a plurality of slide bars (23) are fixedly mounted on the inside of the driven gear (22), a long slide groove for limiting the sliding of the slide bars (23) is provided on the outside of the mounting tube (6), and a synchronous toothed belt (24) is rotatably mounted between the driven gear (22) and the driving gear (21).

5. The CNC plasma spraying machine according to claim 1, characterized in that: An adjusting turntable (26) is rotatably mounted on the outer side of the T-shaped bracket (3), a plurality of placement plates (27) are rotatably mounted on the top of the adjusting turntable (26), and an anti-slip groove is provided on the top of the placement plate (27).

6. A CNC plasma spraying machine according to claim 5, characterized in that: A plurality of sliding balls (28) are fixedly mounted on the bottom of the placement plate (27), and an annular groove for limiting the sliding of the sliding balls (28) is provided on the inner side of the adjustment turntable (26).

7. A CNC plasma spraying machine according to claim 6, characterized in that: A mounting column (29) is rotatably mounted on the outer side of the T-shaped bracket (3); the mounting column (29) is fixedly mounted on the top of the adjusting dial (26); a plurality of arc-shaped grooves are formed on the outer side of the mounting column (29); and a heat-resistant sleeve (30) is fixedly mounted on the outer side of the mounting column (29).

8. The CNC plasma spraying machine according to claim 2, characterized in that: An arc-shaped stop block (31) is fixedly mounted on one end of the pressing block (9), and the bottom end of the arc-shaped stop block (31) is an arc-shaped structure.

9. The CNC plasma spraying machine according to claim 3, characterized in that: A plurality of limit strips (32) are fixedly mounted on the inner side of the mounting tube (6), and a limit groove for limiting the sliding of the limit strips (32) is provided on the outer side of the guide tube (14).

10. The CNC plasma spraying machine according to claim 4, characterized in that: Two positioning plates (33) are fixedly mounted between the bottom of the fixing plate (20) and the top of the T-shaped bracket (3).

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