Efficient positioning and clamping device for thermal spraying

Abstract

The invention discloses an efficient positioning and clamping device for thermal spraying, and relates to the technical field of metal coatings. The efficient positioning and clamping device for thermal spraying comprises a main body frame and an auxiliary body frame, the main body frame comprises a mounting table arranged on the main body frame, a to-be-sprayed steel pipe is placed on the mounting table, and a receding groove is formed in the mounting table; the fixing mechanism comprises a plurality of movable swing rods mounted on the mounting table, a limiting wheel is rotationally mounted on the surface of each movable swing rod, and a fixed swing rod is rotationally mounted at the other end of each limiting wheel; an external driving device drives a back pressure mechanism to rotate, rotation of the back pressure mechanism drives a limiting wheel to rotate synchronously, then a to-be-sprayed steel pipe is driven to rotate, due to the circular arrangement of the limiting wheel, the interior of the to-be-sprayed steel pipe is stably limited, the to-be-sprayed steel pipe is prevented from rotating and slipping, and the spraying quality of the to-be-sprayed steel pipe is improved. And by matching with an external thermal spraying nozzle which reciprocates, the purpose of automatically and uniformly spraying the surface of the to-be-sprayed steel pipe is achieved, secondary reverse spraying of the outer circumference is avoided, and the spraying efficiency of thermal spraying is improved.

Description

Technical Field

[0001] The invention relates to the technical field of metal plating, and in particular to a thermal spraying high-efficiency positioning and clamping device. Background Art

[0002] At present, with the development of industry, the use of metals is becoming more and more widespread. At the same time, the technology of metal surface coating is also constantly being optimized. The coating formed by spraying on the metal surface greatly improves the corrosion resistance of the metal. At the same time, the coating materials that can be sprayed by thermal spraying are extremely wide. Thermal spraying technology can be used to spray most solid engineering materials.

[0003] At present, in the process of thermal spraying of steel pipes, the steel pipe is clamped and rotated, and then the surface of the steel pipe is sprayed by the reciprocating motion of the thermal spray nozzle. However, the existing equipment fixes one end of the steel pipe by the clamp of the machine tool and then rotates it. This method causes that during the spraying process, the position clamped by the clamp cannot be sprayed, and secondary spraying is required, which greatly affects the efficiency of spraying.

[0004] Based on this, the present invention designs a thermal spraying high-efficiency positioning clamping device to solve the above problems. Summary of the invention

[0005] The purpose of the embodiments of the present invention is to provide a thermal spraying efficient positioning and clamping device, aiming to solve the technical problems existing in the prior art mentioned in the background technology.

[0006] The embodiment of the present invention is implemented as follows: a thermal spraying high-efficiency positioning and clamping device, the device comprising:

[0007] Main frame: including a mounting platform arranged on the main frame, on which the steel pipe to be sprayed is placed, and a clearance groove is provided;

[0008] The fixing mechanism comprises a plurality of movable pendulum rods mounted on the mounting platform, each movable pendulum rod has a limit wheel rotatably mounted on its surface, and a fixed pendulum rod is rotatably mounted on the other end of the limit wheel;

[0009] Back pressure mechanism: used to drive the limiting wheel to press against the inner wall of the steel pipe to be sprayed;

[0010] Transverse movement mechanism: through the cooperation with the driving mechanism, it drives the limiting wheel to extend into the interior of the steel pipe to be sprayed;

[0011] Support mechanism: It cooperates with the driving mechanism to separate from the steel pipe to be sprayed.

[0012] Furthermore, the back-pressure mechanism includes two conical blocks installed on the mounting table, a back-pressure spring is fixedly installed on the inner wall of each conical block, the end of the back-pressure spring away from the conical block is connected to the surface of the moving column, the conical block is slidingly connected to the surface of the moving column, a linkage rod is fixedly installed on the surface of the conical block, the linkage rod passes through the moving column and is slidingly connected to the moving column, the surface of the linkage rod is rotatably connected to a moving rocker rod, and the surface of the moving column is rotatably connected to a fixed rocker rod.

[0013] Furthermore, the transverse movement mechanism includes a rotating cylinder installed on the mounting table, a bidirectional screw is fixedly installed inside the rotating cylinder, the bidirectional screw and two screw sliders respectively form a spiral pair transmission, each screw slider is slidably connected to the mounting table, the moving column passes through the screw slider and is rotatably connected to the screw slider, and the surface of the rotating cylinder is provided with a first straight groove, a spiral groove and a second straight groove that cooperate with the driving mechanism, and the first straight groove, the spiral groove and the second straight groove are connected in sequence.

[0014] Furthermore, the supporting mechanism includes a supporting cylinder rotatably mounted on a mounting table, the surface of the supporting cylinder is provided with a first arc groove, a supporting straight groove and a second arc groove which cooperate with the driving mechanism, and the first arc groove, the supporting straight groove and the second arc groove are connected in sequence, a supporting rod is fixedly mounted on the surface of the supporting cylinder, and the surface of the supporting rod is in contact with the steel pipe to be sprayed.

[0015] Furthermore, the driving mechanism includes a driving motor fixedly mounted on the mounting table, the output end of the driving motor passes through the mounting table and is rotatably connected to the mounting table, a rotating screw is fixedly mounted on the output end of the driving motor, the rotating screw and the driving slider form a spiral pair transmission, a thrust rod is fixedly mounted on the surface of the driving slider, and both ends of the thrust rod are in contact with the inner walls of the supporting straight groove and the spiral groove respectively.

[0016] Furthermore, the device also includes a rotating mechanism, which includes a rotating motor fixedly mounted on the mounting platform, the output end of the rotating motor passes through the mounting platform and is rotatably connected to the mounting platform, and a rotating slide rod is fixedly mounted on the output end of the rotating motor, and the rotating slide rod is slidably connected to the moving column.

[0017] Furthermore, the contact ends of the thrust rod and the supporting straight groove and the spiral groove are all provided with rolling balls.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The present invention drives the back-pressure mechanism to rotate through an external driving device, and the rotation of the back-pressure mechanism drives the limiting wheel to rotate synchronously, thereby driving the steel pipe to be sprayed to rotate. Due to the circular setting of the limiting wheel, the inside of the steel pipe to be sprayed is stably limited, avoiding the rotation slip of the steel pipe to be sprayed, and then cooperating with the external reciprocating thermal spraying nozzle, the purpose of automatically spraying the surface of the steel pipe to be sprayed evenly is achieved, avoiding the need for secondary back-spraying on the outer circumference, and improving the spraying efficiency of thermal spraying.

[0020] 2. The present invention drives the supporting mechanism to rotate through the driving mechanism. When the supporting mechanism drives the steel pipe to be sprayed to rotate and enter the yielding groove, the steel pipe to be sprayed is blocked by the mounting platform and rolls down the slope of the mounting platform into the collecting device, thereby completing the automatic unloading of the steel pipe to be sprayed. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic diagram of the structure of a thermal spraying high-efficiency positioning and clamping device provided by an embodiment of the present invention;

[0022] Figure 2 For the present invention Figure 1 A schematic diagram of the enlarged structure at point A;

[0023] Figure 3 It is a schematic diagram of the cross-sectional structure of the present invention;

[0024] Figure 4 For the present invention Figure 3 A schematic diagram of the enlarged structure at B;

[0025] Figure 5 It is a structural schematic diagram of another viewing angle of a thermal spraying high-efficiency positioning and clamping device of the present invention;

[0026] Figure 6 For the present invention Figure 5 A schematic diagram of the enlarged structure at C;

[0027] Figure 7 It is another perspective structural schematic diagram of a thermal spraying high-efficiency positioning and clamping device of the present invention;

[0028] Figure 8 For the present invention Figure 7 A schematic diagram of the structure at D of FIG.

[0029] Fig. 9 This is a schematic diagram of the installation position structure of the rotating drum of the present invention;

[0030] Fig.10 For the present invention Fig. 9 A schematic diagram of the structure at E of FIG.

[0031] Fig.11It is a schematic diagram of the installation position structure of the rotating screw rod of the present invention.

[0032] In the attached drawings: 1. main frame; 101. mounting platform; 102. steel pipe to be sprayed; 103. clearance slot; 2. fixing mechanism; 201. limiting wheel; 202. mobile swing rod; 203. fixed swing rod; 3. back pressure mechanism; 301. conical block; 302. back pressure spring; 303. linkage rod; 304. mobile column; 4. transverse mechanism; 401. rotating cylinder; 402. bidirectional screw rod; 403. screw rod slider; 40 4. First straight groove; 405. Spiral groove; 406. Second straight groove; 5. Support mechanism; 501. Support cylinder; 502. First arc groove; 503. Support straight groove; 504. Second arc groove; 505. Support rod; 6. Driving mechanism; 601. Driving motor; 602. Rotating screw rod; 603. Driving slider; 604. Thrust rod; 7. Rotating mechanism; 701. Rotating motor; 702. Rotating slider. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0034] It can be understood that the terms "first", "second", etc. used in the present application can be used in this article to describe various elements, but unless otherwise specified, these elements are not limited by these terms. These terms are only used to distinguish the first element from another element.

[0035] like Figure 1 and Figure 2 As shown, in one embodiment, a thermal spraying efficient positioning clamping device is proposed, the device comprising:

[0036] The main frame 1 includes a mounting platform 101 arranged on the main frame 1, a steel pipe 102 to be sprayed is placed on the mounting platform 101, and a clearance groove 103 is opened on the mounting platform 101;

[0037] The fixing mechanism 2 includes a plurality of movable pendulum rods 202 mounted on the mounting platform 101. A limiting wheel 201 is rotatably mounted on the surface of each movable pendulum rod 202, and a fixed pendulum rod 203 is rotatably mounted on the other end of the limiting wheel 201;

[0038] Back pressure mechanism 3: used to drive the limiting wheel 201 to be pressed against the inner wall of the steel pipe 102 to be sprayed;

[0039] Transverse movement mechanism 4: drives the limiting wheel 201 to extend into the interior of the steel pipe 102 to be sprayed through the cooperation with the driving mechanism 6;

[0040] Support mechanism 5: cooperates with driving mechanism 6 to separate from the steel pipe 102 to be sprayed.

[0041] In practical application of the embodiment of the present invention, when the thermal spraying operation is performed on the steel pipe 102 to be sprayed, Figure 1 As shown, at this time, the steel pipe 102 to be sprayed is placed on the supporting straight groove 503 through external equipment. At this time, the driving mechanism 6 and the lateral movement mechanism 4 drive the back pressure mechanisms 3 at both ends to move toward the middle position of the steel pipe 102 to be sprayed, and then drive the limiting wheel 201 to move to the inside of the steel pipe 102 to be sprayed. At this time, under the reaction force of the steel pipe 102 to be sprayed on the back pressure mechanism 3, as shown in FIG. Figure 2 As shown, at this time, the movable swing rod 202 and the fixed swing rod 203 are driven to swing, and then the limiting wheel 201 is synchronously driven to move away from the central axis of the steel pipe 102 to be sprayed, until the limiting wheel 201 is pressed and tightly against the inner wall of the steel pipe 102 to be sprayed, thereby automatically clamping and fixing the steel pipe 102 to be sprayed. Through the action of the driving mechanism 6 and the supporting mechanism 5, the supporting mechanism 5 no longer supports the steel pipe 102 to be sprayed. At this time, the steel pipe 102 to be sprayed is completely fixed and limited by the limiting wheel 201. At this time, the back pressure mechanism 3 is driven to rotate by the external driving device. The rotation of the back pressure mechanism 3 drives the limiting wheel 201 to rotate synchronously, thereby driving the steel pipe 102 to be sprayed to rotate. Figure 2 As shown, due to the circular setting of the limiting wheel 201, the interior of the steel pipe 102 to be sprayed is stably limited, and the steel pipe 102 to be sprayed is avoided from rotating and slipping. Combined with the reciprocating thermal spraying nozzle outside, the purpose of automatically spraying the surface of the steel pipe 102 to be sprayed evenly is achieved, and the need for secondary back-spraying on the outer circumference is avoided, thereby improving the spraying efficiency of thermal spraying. When the spraying is completed, the device is reset by the reverse movement of the driving mechanism 6. At this time, the device is still supported by the supporting mechanism 5. When the driving mechanism 6 moves in the reverse direction until the reset is completed, the driving mechanism 6 continues to move in the reverse direction. At this time, the driving mechanism 6 drives the supporting mechanism 5 to rotate. As the supporting mechanism 5 drives the steel pipe 102 to be sprayed to rotate and enter the yield groove 103, it is blocked by the mounting platform 101 at this time, so that the steel pipe 102 to be sprayed rolls from the slope of the mounting platform 101 to the collecting device, thereby completing the automatic unloading of the steel pipe 102 to be sprayed.

[0042] like Figure 3 and Figure 4As shown, as a preferred embodiment of the present invention, the back-pressure mechanism 3 includes two conical blocks 301 installed on the mounting table 101, and a back-pressure spring 302 is fixedly installed on the inner wall of each conical block 301, and the end of the back-pressure spring 302 away from the conical block 301 is connected to the surface of the moving column 304, the conical block 301 is slidably connected to the surface of the moving column 304, and a linkage rod 303 is fixedly installed on the surface of the conical block 301. The linkage rod 303 penetrates the moving column 304 and is slidably connected to the moving column 304, the surface of the linkage rod 303 is rotatably connected to the moving rocker 202, and the surface of the moving column 304 is rotatably connected to the fixed rocker 203.

[0043] In actual application, when the steel pipe 102 to be sprayed is fixed, the conical blocks 301 at both ends are driven to move toward the middle of the steel pipe 102 to be sprayed under the action of the driving mechanism 6 and the lateral movement mechanism 4. After the conical blocks 301 come into contact with the steel pipe 102 to be sprayed, the conical blocks 301 at both ends move in opposite directions relative to the moving column 304 under the extrusion of the reaction force of the steel pipe 102 to be sprayed. At this time, the back pressure spring 302 is compressed, as shown in FIG. Figure 4 As shown, from Figure 4 When viewed from the front direction, the leftward movement of the conical block 301 drives the linkage rod 303 to move leftward synchronously, and then drives the limiting wheel 201 to move away from the central axis of the steel pipe 102 to be sprayed through the swing of the mobile rocker 202 and the fixed rocker 203. At this time, the limiting wheel 201 squeezes the inner wall of the steel pipe 102 to be sprayed, so as to achieve the purpose of automatically fixing and clamping the steel pipe 102 to be sprayed. At the same time, through the conical setting of the conical block 301, steel pipes 102 to be sprayed with different diameters can be fixed, thereby increasing the versatility of the device and also improving the stability of the lateral fixation of the steel pipe 102 to be sprayed.

[0044] like Fig. 9 , Fig.10 and Fig.11 As shown, as another preferred embodiment of the present invention, the transverse movement mechanism 4 includes a rotating cylinder 401 installed on the mounting platform 101, and a bidirectional screw rod 402 is fixedly installed inside the rotating cylinder 401. The bidirectional screw rod 402 and two screw sliders 403 respectively form a spiral pair transmission, and each screw slider 403 is slidingly connected to the mounting platform 101. The movable column 304 passes through the screw slider 403 and is rotatably connected to the screw slider 403. The surface of the rotating cylinder 401 is provided with a first straight groove 404, a spiral groove 405 and a second straight groove 406 that cooperate with the driving mechanism 6, and the first straight groove 404, the spiral groove 405 and the second straight groove 406 are connected in sequence.

[0045] In practical application of the embodiment of the present invention, when fixing the steel pipe 102 to be sprayed, Fig.10As shown, at this time, the driving mechanism 6 and the spiral groove 405 cooperate to drive the rotating cylinder 401 to rotate, as shown in FIG. Fig.11 As shown, the rotation of the rotating cylinder 401 drives the bidirectional screw rod 402 to rotate synchronously, and the rotation of the bidirectional screw rod 402 drives the screw sliders 403 at both ends to move toward each other through the reverse thread and the spiral pair transmission action, and then drives the conical block 301 to move toward each other, and the steel pipe 102 to be sprayed is clamped and fixed by the cooperation of the back pressure mechanism 3 and the fixing mechanism 2. When the steel pipe 102 to be sprayed is fixed by the limiting wheel 201, the driving mechanism 6 drives the supporting mechanism 5 to move. At the same time, due to the action of the second straight groove 406, the driving mechanism 6 will not drive the rotating cylinder 401 to rotate, and the movement of the supporting mechanism 5 will no longer be The sprayed steel pipe 102 is supported to avoid friction with the supporting mechanism 5 when the steel pipe 102 to be sprayed rotates, thereby affecting the quality of thermal spraying. When the spraying is completed, the driving mechanism 6 moves in the reverse direction to drive the supporting mechanism 5 to reset the support. At the same time, the driving mechanism 6 and the transverse movement mechanism 4 cooperate to complete the reset of the limiting wheel 201. As the driving mechanism 6 continues to move in the reverse direction, the rotating cylinder 401 will not rotate through the cooperation with the first straight groove 404. The driving mechanism 6 and the supporting mechanism 5 cooperate to drive the supporting mechanism 5 to rotate to discharge the steel pipe 102 to be sprayed, thereby avoiding motion interference during discharge.

[0046] like Figure 7 and Figure 8 As shown, as another preferred embodiment of the present invention, the support mechanism 5 includes a support cylinder 501 rotatably mounted on the mounting table 101, and the surface of the support cylinder 501 is provided with a first arc groove 502, a support straight groove 503 and a second arc groove 504 that cooperate with the driving mechanism 6, and the first arc groove 502, the support straight groove 503 and the second arc groove 504 are connected in sequence, and a support rod 505 is fixedly installed on the surface of the support cylinder 501, and the surface of the support rod 505 is in contact with the steel pipe 102 to be sprayed.

[0047] In practical application of the embodiment of the present invention, when the steel pipe 102 to be sprayed is fixed by the action of the driving mechanism 6 and the traverse mechanism 4, as shown in FIG. Figure 8As shown, at this time, the driving mechanism 6 cooperates with the supporting straight groove 503 to prevent the supporting cylinder 501 from rotating, that is, the supporting rod 505 will not rotate either. At this time, the supporting rod 505 always supports the steel pipe 102 to be sprayed. When the steel pipe 102 to be sprayed is fixed, the driving mechanism 6 and the second arc groove 504 drive the supporting cylinder 501 to rotate, and then drive the supporting rod 505 to rotate. At this time, the supporting rod 505 no longer supports the steel pipe 102 to be sprayed, thereby avoiding the steel pipe 102 to be sprayed. 2 causes friction during spraying. After the thermal spraying of the steel pipe 102 to be sprayed is completed, the reverse movement of the driving mechanism 6 drives the supporting mechanism 5 to support the steel pipe 102 to be sprayed again. After the driving mechanism 6 drives the limiting wheel 201 to reset through the transverse mechanism 4, the continued movement of the driving mechanism 6 drives the supporting rod 505 to rotate through the first arc groove 502. Then, when the supporting rod 505 passes through the giving way groove 103, the steel pipe 102 to be sprayed is stably discharged under the limiting action of the mounting platform 101.

[0048] like Figure 5 , Figure 6 and Fig.11 As shown, as another preferred embodiment of the present invention, the driving mechanism 6 includes a driving motor 601 fixedly mounted on the mounting platform 101, the output end of the driving motor 601 passes through the mounting platform 101 and is rotatably connected to the mounting platform 101, a rotating screw 602 is fixedly mounted on the output end of the driving motor 601, the rotating screw 602 and the driving slider 603 form a spiral pair transmission, and a thrust rod 604 is fixedly mounted on the surface of the driving slider 603, and both ends of the thrust rod 604 are in contact with the inner walls of the supporting straight groove 503 and the spiral groove 405 respectively.

[0049] In practical application of the embodiment of the present invention, when the steel pipe 102 to be sprayed is clamped and fixed, as shown in FIG. Figure 5 and Fig.11 As shown, at this time, the driving motor 601 starts to run, and the operation of the driving motor 601 drives the rotating screw 602 to rotate, and then drives the driving slider 603 to move horizontally through the screw pair transmission action, and the movement of the driving slider 603 drives the thrust rod 604 to move horizontally synchronously, as shown in FIG. Figure 6 As shown, at this time, the thrust rod 604 clamps and fixes the steel pipe 102 to be sprayed by cooperating with the sliding grooves on the rotating cylinder 401 and the supporting cylinder 501, and at the same time does not affect the thermal spraying quality of the steel pipe 102 to be sprayed. When the spraying of the steel pipe 102 to be sprayed is completed, the driving motor 601 runs in the reverse direction, and the thrust rod 604, the rotating cylinder 401 and the sliding grooves on the supporting cylinder 501 cooperate to complete the reset of the device and the stable feeding of the steel pipe 102 to be sprayed.

[0050] like Figure 1 and Figure 2 As shown, as another preferred embodiment of the present invention, the device also includes a rotating mechanism 7, the rotating mechanism 7 includes a rotating motor 701 fixedly mounted on the mounting platform 101, the output end of the rotating motor 701 passes through the mounting platform 101 and is rotatably connected to the mounting platform 101, and a rotating slide bar 702 is fixedly mounted on the output end of the rotating motor 701, and the rotating slide bar 702 is slidably connected to the moving column 304.

[0051] In practical application of the embodiment of the present invention, after the steel pipe 102 to be sprayed is fixed, Figure 1 and Figure 2 As shown, at this time, the rotating motor 701 starts to run, and the operation of the rotating motor 701 drives the rotating slide bar 702 to rotate, and then drives the moving column 304 to rotate. The rotation of the moving column 304 drives the limiting wheel 201 to rotate through the connection action of the mechanism, and then drives the steel pipe 102 to be sprayed to rotate, thereby achieving the purpose of stable rotation for spraying.

[0052] like Figure 6 As shown, as another preferred embodiment of the present invention, the contact ends of the thrust rod 604 and the supporting straight groove 503 and the spiral groove 405 are all provided with rolling balls.

[0053] In practical application, the embodiment of the present invention is as follows: Figure 6 As shown, by arranging a rolling ball on the thrust rod 604, the thrust rod 604 converts the sliding groove into rolling friction when moving, thereby increasing the service life and stability of the device.

[0054] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0055] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

[0056] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A thermal spraying high-efficiency positioning and clamping device, characterized in that: The device comprises: The main frame (1) comprises a mounting platform (101) arranged on the main frame (1), a steel pipe (102) to be sprayed is placed on the mounting platform (101), and a clearance groove (103) is provided on the mounting platform (101); The fixing mechanism (2) comprises a plurality of movable swing rods (202) mounted on the mounting platform (101), a limiting wheel (201) being rotatably mounted on the surface of each movable swing rod (202), and a fixed swing rod (203) being rotatably mounted on the other end of the limiting wheel (201); The back pressure mechanism (3) is used to drive the limiting wheel (201) to be pressed against the inner wall of the steel pipe (102) to be sprayed; The transverse movement mechanism (4) drives the limiting wheel (201) to extend into the interior of the steel pipe (102) to be sprayed by cooperating with the driving mechanism (6); The supporting mechanism (5) is separated from the steel pipe (102) to be sprayed by cooperating with the driving mechanism (6).

2. A thermal spraying high-efficiency positioning and clamping device according to claim 1, characterized in that: The back pressure mechanism (3) comprises two conical blocks (301) mounted on a mounting platform (101), a back pressure spring (302) being fixedly mounted on the inner wall of each conical block (301), one end of the back pressure spring (302) away from the conical block (301) being connected to the surface of a movable column (304), the conical block (301) being slidably connected to the surface of the movable column (304), a linkage rod (303) being fixedly mounted on the surface of the conical block (301), the linkage rod (303) penetrating the movable column (304) and being slidably connected to the movable column (304), the surface of the linkage rod (303) being rotatably connected to a movable rocker (202), and the surface of the movable column (304) being rotatably connected to a fixed rocker (203).

3. A thermal spraying high-efficiency positioning and clamping device according to claim 2, characterized in that: The transverse movement mechanism (4) comprises a rotating cylinder (401) mounted on a mounting platform (101), a bidirectional screw (402) being fixedly mounted inside the rotating cylinder (401), the bidirectional screw (402) and two screw sliders (403) respectively forming a spiral pair transmission, each screw slider (403) being slidably connected to the mounting platform (101), a movable column (304) passing through the screw slider (403) and being rotatably connected to the screw slider (403), a first straight groove (404), a spiral groove (405) and a second straight groove (406) cooperating with the driving mechanism (6) being provided on the surface of the rotating cylinder (401), and the first straight groove (404), the spiral groove (405) and the second straight groove (406) being connected in sequence.

4. A thermal spraying high-efficiency positioning and clamping device according to claim 3, characterized in that: The support mechanism (5) comprises a support cylinder (501) rotatably mounted on a mounting platform (101); a first arc-shaped groove (502), a support straight groove (503) and a second arc-shaped groove (504) which cooperate with a driving mechanism (6) are provided on the surface of the support cylinder (501); the first arc-shaped groove (502), the support straight groove (503) and the second arc-shaped groove (504) are connected in sequence; a support rod (505) is fixedly mounted on the surface of the support cylinder (501); and the surface of the support rod (505) contacts the steel pipe (102) to be sprayed.

5. A thermal spraying high-efficiency positioning and clamping device according to claim 4, characterized in that: The driving mechanism (6) comprises a driving motor (601) fixedly mounted on the mounting platform (101); the output end of the driving motor (601) passes through the mounting platform (101) and is rotatably connected to the mounting platform (101); a rotating screw rod (602) is fixedly mounted on the output end of the driving motor (601); the rotating screw rod (602) and the driving slider (603) form a spiral pair transmission; a thrust rod (604) is fixedly mounted on the surface of the driving slider (603); and two ends of the thrust rod (604) are in contact with the inner walls of the supporting straight groove (503) and the spiral groove (405), respectively.

6. The thermal spraying high-efficiency positioning and clamping device according to claim 2, characterized in that: The device further comprises a rotating mechanism (7), the rotating mechanism (7) comprising a rotating motor (701) fixedly mounted on the mounting platform (101), the output end of the rotating motor (701) passing through the mounting platform (101) and being rotatably connected to the mounting platform (101), the output end of the rotating motor (701) being fixedly mounted with a rotating slide bar (702), and the rotating slide bar (702) being slidably connected to the moving column (304).

7. The thermal spraying high-efficiency positioning and clamping device according to claim 5, characterized in that: The contact ends of the thrust rod (604) and the supporting straight groove (503) and the spiral groove (405) are all provided with rolling balls.

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