A plasma spraying apparatus

Abstract

The present application relates to the technical field of plasma spraying, and particularly relates to a plasma spraying equipment, which comprises a box body, a placing table and a spraying mechanism are arranged in the box body, a mounting plate is arranged in the box body through a lifting mechanism, a supporting cylinder is arranged at the bottom side of the mounting plate, a motor is arranged at the top of the mounting plate, the output shaft of the motor is rotatably penetrated through the mounting plate and is connected with a lead screw arranged in the supporting cylinder, two strip holes are arranged on the outer side of the supporting cylinder, an upper rotating strip is rotatably connected with an upper connecting block at the top of the strip hole, a lower connecting block is slidably arranged in the strip hole, one end of the lower connecting block towards the inside of the supporting cylinder is connected with a sliding ring which is threadedly connected with the lead screw, a lower rotating strip is rotatably arranged at one end of the lower connecting block, the bottom end of the upper rotating strip and the top end of the lower rotating strip which are located at the same strip hole are rotatably connected with the same supporting block, the inside of the bottle-shaped product is fixed, the clamping and fixing of the outer surface of the bottle-shaped product is avoided, the spraying treatment of the clamping position of the bottle-shaped product cannot be completed at one time, and the spraying efficiency is affected.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of plasma spraying, in particular to a plasma spraying equipment. BACKGROUND

[0002] With the development of modern industry towards high parameters and extreme direction, the requirements for material performance are continuously improved, and traditional materials have been difficult to meet the demand of complex working conditions. Plasma spraying, which can generate high-temperature plasma arc, melt almost all engineering materials, and spray materials at high speed to the surface of the material substrate to form high-quality coating, has become a research hotspot and key technology in the field of material surface strengthening and modification due to its unique advantages.

[0003] The plasma spraying equipment generally cooperates with a corresponding spraying turntable to fix the workpiece during spraying. For example, the Chinese patent document with the publication number CN107447182A discloses a plasma spraying turntable. The plasma spraying turntable in this scheme is connected to the adjusting column through a sleeve connection mode by setting the lifting frame, which can adjust the height of the lifting frame to adapt to the spraying of workpieces of different heights. The overturning mechanism suspends the overturning frame on the lifting frame, and by rotating the swing handle, the inclination angle of the overturning frame can be adjusted to adjust the spraying direction of the workpiece. By rotating the adjusting handle, the clamping jaw can clamp the workpiece, which can quickly clamp workpieces of different sizes and greatly reduces the workload of manual clamping.

[0004] Based on the technical scheme disclosed in the above patent document, the existing plasma spraying equipment often clamps the surface of the product by the clamping jaw to achieve the fixing operation when completing the spraying operation on the product, which makes it impossible to complete the spraying treatment on the clamping part of the bottle-shaped product at one time when spraying the bottle-shaped product, affecting the spraying efficiency. SUMMARY

[0005] The present application aims to provide a plasma spraying equipment to solve the problem that the existing plasma spraying equipment cannot complete the spraying treatment on the clamping part of the bottle-shaped product at one time when spraying the bottle-shaped product, affecting the spraying efficiency.

[0006] To solve the above technical problems, the present application adopts the following technical scheme:

[0007] The application relates to a kind of plasma spraying equipment, including box, placing table and spraying mechanism are equipped in box, installation plate is equipped in box by lifting mechanism, the bottom side of installation plate is equipped with vertical support cylinder, the top of installation plate is equipped with motor, the output shaft of motor is vertically downward rotation and penetrates installation plate, and is connected with vertical movable screw rod in the inside of support cylinder, two strip holes are opened on the outside of support cylinder and are communicated with the inside, the top of strip hole is rotatably connected with upper rotating strip through upper connecting block, lower connecting block is slidably arranged in strip hole, and the end of lower connecting block towards the inside of support cylinder is connected with sliding ring that is threadedly connected with screw rod, the end of lower connecting block away from sliding ring is rotatably provided with lower rotating strip, and the bottom end of upper rotating strip and the top end of lower rotating strip at the same strip hole position are rotatably connected with the same support block.

[0008] Further technical solutions are that the bottom end of the screw rod is rotatably connected with the bottom end of the support cylinder through a bearing, a driving block is slidably arranged below the lower connecting block in the strip hole, a limiting rod is arranged on the top of the driving block, a tension spring is sleeved on the outside of the limiting rod, the two ends of the tension spring are respectively connected with the driving block and the lower connecting block, and the tension spring is in a stretched state, so that the top of the limiting rod abuts against the bottom side of the driving block, the end of the driving block towards the inside of the support cylinder is connected with a bottom ring movably sleeved on the outside of the screw rod, a bottom inclined tooth groove in an annular array is arranged on the top surface of the bottom ring, a top ring is fixedly sleeved on the outside of the screw rod between the bottom ring and the sliding ring, a top inclined tooth groove in an annular array is arranged on the bottom side of the top ring, and the bottom inclined tooth groove and the top inclined tooth groove are oppositely arranged in tooth direction; the top of the support cylinder and the bottom side of the installation plate are provided with a limiting mechanism.

[0009] Still further technical solutions are that the limiting mechanism comprises an upper ring movably sleeved on the outside of the screw rod, the upper ring is connected with the bottom side of the installation plate through a reset assembly, an upper inclined tooth groove in an annular array is arranged on the bottom side of the upper ring, and the upper inclined tooth groove is arranged in the same tooth direction as the top inclined tooth groove, a lower inclined tooth groove is arranged on the top end of the support cylinder, and the lower inclined tooth groove is oppositely arranged in tooth direction with the upper inclined tooth groove and is engaged and matched into a complete cylinder under the action of the reset assembly.

[0010] Still further technical solutions are that the reset assembly comprises a telescopic rod vertically arranged on the top side of the upper ring in an annular array, a supporting spring is sleeved on the outside of the telescopic rod, the two ends of the supporting spring are respectively fixedly connected with the top side of the upper ring and the bottom side of the installation plate, and the supporting spring is in a compressed state, so that the lower inclined tooth groove and the upper inclined tooth groove are engaged and matched into a complete cylinder.

[0011] Still further technical solutions are that the lifting mechanism comprises two air cylinders vertically arranged on the top side of the box, and the telescopic ends of the two air cylinders are vertically and downward movably penetrated into the inside of the box and are respectively fixedly connected with the top side of the installation plate.

[0012] Still further technical solutions are that the side of the support block away from the support cylinder is connected with a circular arc plate.

[0013] Further, the top side of the placing table is provided with a positioning groove, and the center of the positioning groove and the axis of the supporting cylinder are in the same vertical position.

[0014] Compared with the prior art, the application has the following beneficial effects:

[0015] In the working process of the application, the starting motor drives the screw rod to rotate forward, the screw rod meshes with the sliding ring to drive the sliding ring to move upward, the sliding ring drives the lower connecting block to move towards the upper connecting block, and then the upper rotating bar rotates relative to the upper connecting block, and the lower rotating bar rotates relative to the lower connecting block, and the driving support block moves away from the supporting cylinder, so that the support block abuts against the inner wall of the bottle-shaped product to support the bottled product, and the bottled product is fixed, and then the spraying mechanism sprays the bottle-shaped product, and the internal part of the bottle-shaped product is fixed, so that the spraying process of the clamping part of the bottle-shaped product can be completed at one time, and the spraying efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the plasma spraying equipment.

[0017] Figure 2 It is a schematic diagram of the structure of the mounting plate, the motor and the supporting cylinder.

[0018] Figure 3 It is a schematic diagram of the structure of the mounting plate, the motor and the supporting cylinder. Figure 2 It is an enlarged schematic diagram of position A in the application

[0019] Figure 4 It is an enlarged schematic diagram of position A in the application Figure 2 It is an enlarged schematic diagram of position A in the application

[0020] Figure 5 It is an enlarged schematic diagram of position A in the application Figure 3 It is an enlarged schematic diagram of position A in the application

[0021] Figure 6 It is an enlarged schematic diagram of position A in the application Figure 2 It is an enlarged schematic diagram of position A in the application

[0022] Figure: 1 - box, 2 - placing table, 3 - spraying mechanism, 4 - mounting plate, 5 - supporting cylinder, 6 - motor, 7 - screw rod, 8 - strip hole, 9 - upper connecting block, 11 - upper rotating bar, 12 - lower connecting block, 13 - sliding ring, 14 - lower rotating bar, 15 - support block, 16 - bearing, 17 - driving block, 18 - limiting rod, 19 - extension spring, 21 - bottom ring, 22 - bottom bevel tooth groove, 23 - top ring, 24 - top bevel tooth groove, 25 - upper ring, 26 - upper bevel tooth groove, 27 - lower bevel tooth groove, 28 - telescopic rod, 29 - supporting spring, 31 - air cylinder, 32 - circular arc plate, 33 - positioning groove. DETAILED DESCRIPTION

[0023] In order to make the objects, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not used to limit the present application.

[0024] Embodiment 1

[0025] Referring to Figures 1 to 4 It is shown that the present application is a kind of plasma spraying equipment, including cabinet 1, cabinet 1 front side is provided with cabinet door (not shown in the figure), cabinet 1 is provided with placing table 2 and spraying mechanism 3, cabinet 1 is provided with mounting plate 4 through lifting mechanism, the bottom side of mounting plate 4 is provided with vertically arranged support cylinder 5, the top of mounting plate 4 is provided with motor 6, the output shaft of motor 6 is vertically downward rotating through mounting plate 4, and is connected with screw rod 7 which is vertically movably arranged in the inside of support cylinder 5, two strip holes 8 are opened on the outside of support cylinder 5 and are communicated with the inside thereof, the top of strip hole 8 is rotatably connected with upper rotating strip 11 through upper connecting block 9, lower connecting block 12 is slidably arranged in strip hole 8, one end of lower connecting block 12 towards the inside of support cylinder 5 is connected with sliding ring 13 which is threadedly engaged with screw rod 7, the end of lower connecting block 12 away from sliding ring 13 is rotatably provided with lower rotating strip 14, the bottom end of upper rotating strip 11 and the top end of lower rotating strip 14 located at the same position of strip hole 8 are rotatably connected with the same support block 15.

[0026] Specifically, in use, the bottle-shaped product is placed on the placing table 2, the lifting mechanism is controlled to drive the mounting plate 4 to descend, and then the support cylinder 5 is lowered to the appropriate position in the inside of the bottle-shaped product, the motor 6 is started to drive the screw rod 7 to rotate forward, the screw rod 7 is engaged with the sliding ring 13 to drive the sliding ring 13 to move upwards, the sliding ring 13 drives the lower connecting block 12 to move towards the upper connecting block 9, and then the upper rotating strip 11 rotates relative to the upper connecting block 9, the lower rotating strip 14 rotates relative to the lower connecting block 12, and the support block 15 moves towards the direction away from the support cylinder 5, so that the support block 15 abuts against the inner wall of the bottle-shaped product to support the bottle-shaped product, the bottle-shaped product is fixed, and then the spraying mechanism 3 sprays the bottle-shaped product, at the same time, the mounting plate 4 can also be driven to move upwards through the lifting mechanism, and finally the bottle-shaped product is moved upwards to ensure that there is a certain gap between the bottom of the bottle-shaped product and the placing table 2, so as to facilitate subsequent spraying, by fixing the inside of the bottle-shaped product, the spraying process of the clamping position of the bottle-shaped product can be completed at one time, and the spraying efficiency is improved.

[0027] Embodiment 2

[0028] Based on the foregoing embodiment 1, referring to Figures 1 to 6The bottom end of the screw rod 7 is rotatably connected to the bottom end of the supporting cylinder 5 through a bearing 16. A driving block 17 is slidably arranged in the strip hole 8 below the lower connecting block 12. The top of the driving block 17 is provided with a limiting rod 18. A tensile spring 19 is sleeved on the outer side of the limiting rod 18. The two ends of the tensile spring 19 are respectively connected to the driving block 17 and the lower connecting block 12, and the tensile spring 19 is in a stretched state, so that the top of the limiting rod 18 is in contact with the bottom side of the driving block 17. The end of the driving block 17 towards the inside of the supporting cylinder 5 is connected to a bottom ring 21 which is movably sleeved on the outer side of the screw rod 7. The top surface of the bottom ring 21 is provided with a plurality of bottom inclined tooth grooves 22 arranged in an annular array. A top ring 23 is fixedly sleeved on the outer side of the screw rod 7 between the bottom ring 21 and the sliding ring 13. The bottom side of the top ring 23 is provided with a plurality of top inclined tooth grooves 24 arranged in an annular array. The bottom inclined tooth grooves 22 and the top inclined tooth grooves 24 are oppositely arranged and can be engaged to form a complete cylinder. The top of the supporting cylinder 5 and the bottom side of the mounting plate 4 are provided with a limiting mechanism.

[0029] Specifically, the supporting cylinder 5 is placed in a suitable position inside the bottle-shaped product. The motor 6 is started to drive the screw rod 7 to rotate forward. Under the action of the limiting mechanism, the supporting cylinder 5 will not rotate with the screw rod 7. The screw rod 7 is engaged with the sliding ring 13 to drive the sliding ring 13 to move upwards. While the sliding ring 13 drives the lower connecting block 12 to move towards the upper connecting block 9, the lower connecting block 12 drives the driving block 17 to move upwards under the action of the tensile spring 19. The driving block 17 drives the bottom ring 21 to move upwards. When the sliding ring 13 drives the lower connecting block 12 to move towards the upper connecting block 9, the upper rotating strip 11 rotates relative to the upper connecting block 9, and the lower rotating strip 14 rotates relative to the lower connecting block 12. The driving supporting block 15 moves away from the supporting cylinder 5, so that the supporting block 15 is in contact with the inner wall of the bottle-shaped product to fix the bottle-shaped product. At this time, the bottom ring 21 moves to contact the top ring 23. The bottom inclined tooth grooves 22 and the top inclined tooth grooves 24 are engaged to form a complete cylinder. The motor 6 continues to drive the screw rod 7 to rotate. Since the bottom inclined tooth grooves 22 and the top inclined tooth grooves 24 are in contact at this time, the top ring 23 rotates with the screw rod 7 to drive the bottom ring 21 to rotate. The driving block 17 arranged on the outer ring side of the bottom ring 21 is in contact with the strip hole 8, so that the supporting cylinder 5 has the same rotating trend as the screw rod 7. At this time, the limiting mechanism is unlocked, and the supporting cylinder 5 can rotate in the same direction as the screw rod 7. The supporting cylinder 5 drives the upper connecting block 9 and the lower connecting block 12 to rotate. The upper connecting block 9 and the lower connecting block 12 drive the upper rotating strip 11 and the lower rotating strip 14 to rotate relative to the axis of the supporting cylinder 5. Finally, the bottle-shaped product is driven to rotate by the supporting block 15, so that the product is rotated to complete more uniform spraying operation.

[0030] When the product is sprayed, the limiting mechanism locks the support cylinder 5, the control motor 6 works to drive the screw rod 7 to rotate reversely, the screw rod 7 drives the top ring 23 to rotate, at this time, since the tooth direction of the top bevel tooth groove 24 and the low bevel tooth groove is opposite, the top ring 23 reversely rotates with the screw rod 7 to extrude the bottom ring 21, so that the bottom ring 21 is lowered, the top ring 23 is not limited, at the same time, the sliding ring 13 is engaged with the screw rod 7 and moves downward, the driving block 17 is pushed downward under the action of the limiting rod 18, and the bottom ring 21 is moved downward, at the same time, the sliding ring 13 moves downward to drive the lower connecting block 12 to move downward, so that the upper rotating bar 11 rotates relative to the upper connecting block 9, the lower rotating bar 14 rotates relative to the lower connecting block 12, the support block 15 moves towards the direction of the support cylinder 5, so that the support block 15 does not abut against the inner wall of the bottled product, and the bottled product is not fixed, and then under the action of the lifting mechanism, the support cylinder 5 is moved out of the bottled product, and the next time the bottled product is sprayed.

[0031] It should be noted that by adjusting the size of the tension spring 19 and the limiting rod 18 and the thread of the screw rod 7 and the sliding ring 13, when the support block 15 abuts against the inner wall of the bottled product to fix the bottled product, the bottom ring 21 moves to contact the top ring 23, and the bottom bevel tooth groove 22 and the top bevel tooth groove 24 are engaged to form a complete cylinder, which is known to those skilled in the art, and those skilled in the art can obtain the corresponding installation relationship and structure according to the known common sense, which will not be described here.

[0032] As a preferred embodiment, referring to Figures 1 to 6 It is shown that the limiting mechanism comprises an upper ring 25, the upper ring 25 is movably sleeved outside the screw rod 7, the top side of the upper ring 25 is connected to the bottom side of the mounting plate 4 through a reset assembly, the bottom side of the upper ring 25 is provided with an upper bevel tooth groove 26 arranged in an annular array, and the upper bevel tooth groove 26 is arranged in the same tooth direction as the top bevel tooth groove 24, the top end of the support cylinder 5 is provided with a lower bevel tooth groove 27, and the lower bevel tooth groove 27 is arranged in the opposite tooth direction to the upper bevel tooth groove 26 and is engaged to form a complete cylinder under the action of the reset assembly.

[0033] Specifically, when the motor 6 drives the screw rod 7 to rotate forward, the lower inclined tooth groove 27 and the upper inclined tooth groove 26 are oppositely arranged and engaged into a complete cylinder under the action of the reset assembly, thereby limiting the support cylinder 5. Since the screw rod 7 rotates forward, the sliding ring 13 can engage with the screw rod 7 to move, thereby driving the lower connecting block 12 and the driving block 17 to move upward along the strip hole 8. The driving block 17 does not abut against the side wall of the strip hole 8, thereby not generating a forward rotating trend of the support cylinder 5. When the support block 15 abuts against the inner wall of the bottle-shaped product to fix the bottle-shaped product, the bottom ring 21 moves to contact the top ring 23, and the bottom inclined tooth groove 22 and the top inclined tooth groove 24 are engaged into a complete cylinder. At this time, the bottom inclined tooth groove 22 and the top inclined tooth groove 24 abut against each other, the top ring 23 rotates forward with the screw rod 7 to drive the bottom ring 21 to rotate, and the driving block 17 arranged on the outer side of the bottom ring 21 abuts against the strip hole 8, so that the support cylinder 5 generates a rotating trend in the same direction as the screw rod 7. At this time, since the lower inclined tooth groove 27 and the upper inclined tooth groove 26 are oppositely arranged, the lower inclined tooth groove 27 rotates to press the upper inclined tooth groove 26, the upper inclined tooth groove 26 vertically reciprocates under the action of the reset assembly, does not limit the lower inclined tooth groove 27, and thus makes the support cylinder 5 rotate with the screw rod 7, thereby driving the bottle-shaped product to rotate, so that the product can be uniformly sprayed.

[0034] When the spraying is completed, the motor 6 drives the screw rod 7 to rotate reversely, the lower inclined tooth groove 27 and the upper inclined tooth groove 26 are oppositely arranged and engaged into a complete cylinder under the action of the reset assembly, and the lower inclined tooth groove 27 and the upper inclined tooth groove 26 abut against each other to limit the support cylinder 5. The screw rod 7 reversely rotates to engage with the sliding ring 13 and drive the sliding ring 13 to move downward, the sliding ring 13 drives the lower connecting block 12 to move downward, the driving block 17 is pushed downward by the limiting rod 18, thereby driving the bottom ring 21 to move downward, and the top ring 23 reversely rotates with the screw rod 7 to press the bottom ring 21. The bottom ring 21 vertically reciprocates under the action of the stretching spring 19, does not limit the top ring 23, and thus realizes the fixation of the bottle-shaped product under the cooperation of the corresponding structures.

[0035] On the basis of the foregoing embodiments, reference is made to Figures 1 to 6 It is shown that the reset assembly includes a telescopic rod 28 arranged in a ring array vertically on the top side of the upper ring 25. A supporting spring 29 is sleeved on the outer side of the telescopic rod 28, and the two ends of the supporting spring 29 are fixedly connected with the top side of the upper ring 25 and the bottom side of the mounting plate 4, respectively. The supporting spring 29 is in a compressed state, so that the lower inclined tooth groove 27 and the upper inclined tooth groove 26 are engaged into a complete cylinder.

[0036] By setting the telescopic rod 28, the upper ring 25 can only move in the vertical direction, and by setting the supporting spring 29, a supporting force is generated on the upper ring 25, so that the lower bevel tooth groove 27 and the upper bevel tooth groove 26 are engaged and matched into a complete cylinder.

[0037] Embodiment 3

[0038] On the basis of the foregoing embodiment 1, refer to Figure 1 It is shown that the lifting mechanism includes two cylinders 31, which are vertically arranged on the top side of the box body 1, and the telescopic ends of the two cylinders 31 are vertically downwardly movable into the inside of the box body 1 and are respectively fixedly connected with the top side of the two ends of the mounting plate 4. By setting the cylinder 31, the mounting plate 4 can be conveniently driven to ascend or descend in the box body 1.

[0039] Embodiment 4

[0040] On the basis of the foregoing embodiment 1, refer to Figures 1 to 4 It is shown that the supporting block 15 is connected with an arc plate 32 on the side away from the supporting barrel 5. By setting the arc plate 32, when the arc plate 32 is used to abut against and support the inner wall of the bottle-shaped product, the contact area with the bottle-shaped product is increased, and the stability during fixing is improved. It should be noted that the specific shape and size of the arc plate 32 can be set according to the specific shape and size of the inner wall of the bottle-shaped product.

[0041] Embodiment 5

[0042] On the basis of the foregoing embodiment 1, refer to Figure 1 It is shown that the placing table 2 is provided with a positioning groove 33 on the top side, and the center of the positioning groove 33 and the axis of the supporting barrel 5 are in the same vertical position. By setting the positioning groove 33, when the bottle-shaped product is placed, a guiding effect is provided, so that the bottle-shaped product can be placed in the specified position, and the subsequent spraying operation can be smoothly performed. It should be noted that the specific shape and size of the positioning groove 33 can be set according to the specific shape and size of the bottle-shaped product.

[0043] Although the present application has been described herein with reference to the various illustrative embodiments, it is understood that various other modifications and implementations can be devised by those skilled in the art, which will fall within the principles and spirit of the disclosure. More specifically, various modifications and improvements can be made to the component parts and / or layout of the subject combination layout within the scope of the disclosure, drawings and claims. In addition to the modifications and improvements to the component parts and / or layout, other uses will also be apparent to those skilled in the art.

Claims

1. A plasma spraying equipment, comprising a housing (1), wherein the housing (1) is provided with a placement platform (2) and a spraying mechanism (3), characterized in that: The housing (1) is equipped with a mounting plate (4) via a lifting mechanism. A vertically arranged support cylinder (5) is provided on the bottom side of the mounting plate (4). A motor (6) is provided on the top of the mounting plate (4). The output shaft of the motor (6) rotates vertically downward through the mounting plate (4) and is connected to a lead screw (7) that is vertically movable inside the support cylinder (5). Two slots (8) are opened on the outer side of the support cylinder (5) and communicate with its interior. The top of the slots (8) is connected to the upper connecting block (9) via a rotating mechanism. An upper rotating bar (11) is dynamically connected, and a lower connecting block (12) is slidably provided in the bar hole (8). One end of the lower connecting block (12) facing the inside of the support cylinder (5) is connected to a slip ring (13) that is threadedly engaged with the lead screw (7). A lower rotating bar (14) is rotatably provided at the end of the lower connecting block (12) away from the slip ring (13). The bottom end of the upper rotating bar (11) and the top end of the lower rotating bar (14) located at the same position in the bar hole (8) are rotatably connected to the same support block (15). The bottom end of the lead screw (7) is rotatably connected to the bottom end of the support cylinder (5) via a bearing (16). A drive block (17) is slidably provided in the slot (8) below the lower connecting block (12). A limiting rod (18) is provided on the top of the drive block (17). A tension spring (19) is sleeved on the outer side of the limiting rod (18). The two ends of the tension spring (19) are respectively connected to the drive block (17) and the lower connecting block (12), and the tension spring (19) is in a stretched state so that the top of the limiting rod (18) abuts against the bottom side of the drive block (17). The drive block (17) is connected to a bottom ring (21) that is movably sleeved on the outside of the lead screw (7) at one end facing the inside of the support cylinder (5). The bottom ring (21) has bottom oblique tooth grooves (22) arranged in a ring array on its top surface. The lead screw (7) is fixedly sleeved between the bottom ring (21) and the slip ring (13) on its outside. The bottom side of the top ring (23) has top oblique tooth grooves (24) arranged in a ring array. The bottom oblique tooth grooves (22) and the top oblique tooth grooves (24) are arranged in opposite directions. The top of the support cylinder (5) and the bottom side of the mounting plate (4) are provided with limiting mechanisms.

2. The plasma spraying equipment according to claim 1, characterized in that: The limiting mechanism includes an upper ring (25), which is movably sleeved on the outside of the lead screw (7). The top side of the upper ring (25) is connected to the bottom side of the mounting plate (4) through a reset component. An upper oblique tooth groove (26) is provided on the bottom side of the upper ring (25) in a ring array. The upper oblique tooth groove (26) and the top oblique tooth groove (24) are arranged in the same direction. A lower oblique tooth groove (27) is provided at the top of the support cylinder (5). The lower oblique tooth groove (27) and the upper oblique tooth groove (26) are arranged in opposite directions and mesh with each other to form a complete cylindrical shape under the action of the reset component.

3. The plasma spraying equipment according to claim 2, characterized in that: The reset assembly includes a telescopic rod (28), which is arranged vertically in a ring array on the top side of the upper ring (25). A support spring (29) is sleeved on the outer side of the telescopic rod (28). The two ends of the support spring (29) are fixedly connected to the top side of the upper ring (25) and the bottom side of the mounting plate (4), respectively. The support spring (29) is in a compressed state so that the lower oblique tooth groove (27) and the upper oblique tooth groove (26) mesh to form a complete cylindrical shape.

4. The plasma spraying equipment according to claim 1, characterized in that: The lifting mechanism includes two cylinders (31), which are vertically arranged on the top side of the housing (1). The telescopic ends of the two cylinders (31) move vertically downwards into the housing (1) and are fixedly connected to the top two ends of the mounting plate (4).

5. The plasma spraying equipment according to claim 1, characterized in that: An arc plate (32) is connected to the side of the support block (15) away from the support cylinder (5).

6. The plasma spraying equipment according to claim 1, characterized in that: The top side of the placement platform (2) is provided with a positioning groove (33), and the center of the positioning groove (33) is in the same vertical position as the axis of the support cylinder (5).

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