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CN-122013089-A - Inner hole plasma spraying device with deflection angle spraying function

CN122013089ACN 122013089 ACN122013089 ACN 122013089ACN-122013089-A

Abstract

The invention relates to the technical field of plasma spraying and discloses an inner hole plasma spraying device with an offset angle spraying function, which comprises a spraying table, a cylindrical part, an operating frame, two clamping mechanisms, a driving mechanism and a rotating mechanism, wherein the cylindrical part is arranged above the spraying table and is used for spraying the inner wall of the cylindrical part, the operating frame is arranged below the spraying table and is used for supporting the spraying table, the two clamping mechanisms are arranged above the spraying table and are used for clamping the cylindrical part, the driving mechanism is arranged above the spraying table and is used for driving the cylindrical part to rotate, and the rotating mechanism is arranged above the spraying table. According to the invention, by combining uniform rotation of the cylindrical part with axial swing of the spray head, the plasma jet can cover the whole inner wall surface, so that the problems of uneven coating thickness, axial stripes or coating missing areas caused by fixed spray head or only single rotation movement in the traditional inner hole spraying are overcome, and the uniformity, compactness and bonding strength of the inner wall coating are obviously improved.

Inventors

  • ZHANG SHUBIN
  • WU JIANZHI
  • LU SHUXIANG

Assignees

  • 扬州利安智能科技有限公司

Dates

Publication Date
20260512
Application Date
20260202

Claims (8)

  1. 1. Inner hole plasma spraying device with off-angle spraying function, including spraying platform (2), its characterized in that still includes: the cylindrical part (1) is arranged above the spraying table (2) and is used for spraying the inner wall of the cylindrical part (1); the operation frame (3) is arranged below the spraying table (2) and is used for supporting the spraying table (2); the two clamping mechanisms (4) are arranged above the spraying table (2) and are used for clamping the cylindrical part (1); the driving mechanism (5) is arranged above the spraying table (2) and is used for driving the cylindrical part (1) to rotate; the rotating mechanism (6) is arranged above the spraying table (2) and is used for supporting the clamping mechanism (4) and rotating the cylindrical part (1); the spraying angle deflection mechanism (7) is arranged at the axle centers of the two clamping mechanisms (4) and is used for spraying the interior of the cylindrical part (1); Wherein the clamping mechanism (4) comprises: A disk (41) arranged on one side of the cylindrical part (1); a fixed ring (42) fixedly connected to the axis of the disc (41); a plurality of clamping assemblies (45) arranged on the disc (41) for clamping the cylindrical part (1); the driving cylinder (43) is fixedly connected to the disc (41) and is connected with the clamping assembly (45) through the U-shaped connecting rod (44) for driving the clamping assembly (45).
  2. 2. The inner hole plasma spraying device with the off-angle spraying function according to claim 1, wherein: the clamping assembly (45) comprises: The cross grooves (451) are circumferentially equidistantly formed on the disc (41), and the inner wall of each cross groove (451) is connected with a cross sliding rod (454) in a sliding manner; The rotating sleeve (452) is rotationally connected to the outer wall of the fixed ring (42), the rotating sleeve (452) is rectangular, and four corners of the rotating sleeve are hinged with the cross slide rod (454) through the arc-shaped rod (453); The U-shaped connecting rod (44) is connected with the hinge joint of one of the arc rods (453) and the cross slide rod (454) and is used for pushing the cross slide rod (454) to move.
  3. 3. The inner hole plasma spraying device with the off-angle spraying function according to claim 2, wherein: the clamping assembly (45) further comprises: the arc-shaped pressing rods (456) are rotatably connected to the pin shafts at one end, far away from the arc-shaped rods (453), of the cross slide rods (454), and the inner sides of the arcs are attached to the outer wall of the cylindrical part (1) and are used for clamping the cylindrical part (1); The fixed plate (455) is fixedly connected to the outer wall of the cross slide bar (454) and is positioned at the outer side of the arc-shaped pressing bar (456); The plurality of abutting plates (457) are respectively and fixedly connected to the rotating positions, far away from the arc-shaped pressing rods (456), of the outer walls of the arc-shaped pressing rods (456); the first springs (458) are fixedly connected between the fixing plate (455) and the abutting plate (457) and are used for pushing the abutting plate (457) to abut against the arc-shaped pressing rod (456) to be attached to the outer wall of the cylindrical part (1).
  4. 4. The inner hole plasma spraying device with the off-angle spraying function according to claim 3, wherein the rotating mechanism (6) comprises: two circular rails (61) fixedly connected to the outer walls of the disks (41) on both sides, respectively; the two circular supporting seats (62) are arranged above the spraying table (2), and the circular rail (61) is positioned on the circular supporting seats (62) to rotate; The two brackets (63) are fixedly connected to the outer walls of the two circular supporting seats (62) respectively and are used for supporting the circular supporting seats (62); the two adjusting blocks (64) are respectively fixedly connected to the bottoms of the two brackets (63) and slide in sliding holes on the spraying table (2); The bidirectional screw rod is rotationally connected in the sliding hole and is respectively in threaded connection with the two adjusting blocks (64) and used for driving the adjusting blocks (64) to move; and a second motor (65) is arranged on the outer wall of the spraying table (2), and the output end of the second motor is connected with one end of the bidirectional screw rod and is used for driving the bidirectional screw rod to rotate.
  5. 5. The inner hole plasma spraying device with the off-angle spraying function according to claim 4, wherein the driving mechanism (5) comprises: the movable rod (51) is connected to the spraying table (2) in a sliding manner, and the top of the movable rod (51) is fixedly connected with the mounting seat (52); the rubber cylinder (53) is rotationally connected to the mounting seat (52) through a transmission shaft and is used for driving the cylindrical part (1) to rotate; the second spring (55) is sleeved on the outer wall of the movable rod (51) and is used for pushing the mounting seat (52) to move upwards and pushing the rubber cylinder (53) to be attached to the outer wall of the cylindrical part (1); And the first motor (54) is arranged on the outer wall of the mounting seat (52), and the output end of the first motor (54) is connected with the transmission shaft of the rubber cylinder (53) and is used for driving the rubber cylinder (53) to rotate.
  6. 6. The inner hole plasma spraying device with the deflection angle spraying function according to claim 5, wherein the spraying angle deflection mechanism (7) comprises: Two slide bars (71) which are respectively connected with the inner walls of the fixed rings (42) at the two sides in a sliding way; a deflection seat (72) fixedly connected between the two slide bars (71); the deflection sleeve (77) is arranged on the inner wall of the deflection seat (72), and a spray head (78) is arranged on the deflection sleeve (77) and is used for spraying the inner wall of the cylindrical part (1); the guide pipe (75) is arranged on the inner wall of the right side slide rod (71) and connected with one side of the deflection sleeve (77) away from the spray head (78) for conveying the paint.
  7. 7. The inner hole plasma spraying device with the deflection angle spraying function according to claim 6, wherein the spraying angle deflection mechanism (7) further comprises: The deflection shaft (76) is fixedly connected to the outer wall of the deflection sleeve (77) and is positioned in the deflection seat (72) for deflection; the gear (79) is fixedly sleeved on the outer wall of the deflection shaft (76) and is positioned on the outer wall of the deflection seat (72); The pushing plate (74) is connected in the sliding holes on the two sliding rods (71) in a sliding way, a rectangular hole is formed in the pushing plate (74), tooth grooves are formed in the rectangular hole, and the tooth grooves are meshed with the gears (79); the push rod (73) is fixedly connected in the cavity of the left side slide rod (71), and the output end of the push rod (73) is connected with the push plate (74) and used for driving the gear (79) to rotate.
  8. 8. The inner hole plasma spraying device with the deflection angle spraying function according to claim 7, wherein the deflection sleeve (77) is arranged in a groove formed on the deflection seat (72) in a corrugated and bent mode.

Description

Inner hole plasma spraying device with deflection angle spraying function Technical Field The invention relates to the technical field of plasma spraying, in particular to an inner hole plasma spraying device with an off-angle spraying function. Background The plasma spraying technology is taken as an important surface engineering technology and is widely applied to surface strengthening, repairing and functional coating preparation of key components such as mechanical parts, aerospace parts and the like, wherein the plasma spraying requirements on the inner wall of a cylindrical part, such as a hydraulic cylinder barrel, an engine cylinder sleeve and a pipeline inner wall, are increased increasingly, the wear resistance, corrosion resistance or high temperature resistance of the inner wall of the cylindrical part are improved, however, the inner wall of the cylindrical part is subjected to plasma spraying at present to a series of technical challenges: The conventional inner hole spraying mode mainly adopts a mode of extending a spray gun into a hole to be fixed or only linearly move, and because the plasma jet has directivity and energy and powder distribution have beam characteristics, the fixed spraying can cause the coating to form obvious uneven thickness distribution in the axial direction, and even in the circumferential direction, the uneven coating of a stripe shape or a spiral line shape is generated due to a single movement mode of part rotation, so that the inner hole plasma spraying device with the deflection angle spraying function is provided to solve the problems. Disclosure of Invention The invention aims to solve the technical problem of providing an inner hole plasma spraying device with an off-angle spraying function aiming at the defects in the prior art. In order to solve the technical problems, the technical scheme adopted by the invention is that the inner hole plasma spraying device with the deflection angle spraying function comprises a spraying table and further comprises: the columnar part is arranged above the spraying table and is used for spraying the inner wall of the columnar part; The operation frame is arranged below the spraying table and used for supporting the spraying table; the two clamping mechanisms are arranged above the spraying table and are used for clamping the cylindrical parts; The driving mechanism is arranged above the spraying table and is used for driving the cylindrical part to rotate; the rotating mechanism is arranged above the spraying table and used for supporting the clamping mechanism and rotating the cylindrical part; the spraying angle deflection mechanism is arranged at the axle centers of the two clamping mechanisms and is used for spraying the interior of the cylindrical part; Wherein, fixture includes: the disc is arranged on one side of the cylindrical part; the fixed ring is fixedly connected to the axis of the disc; The clamping assemblies are arranged on the disc and are used for clamping the cylindrical parts; the driving cylinder is fixedly connected to the disc and connected with the clamping assembly through the U-shaped connecting rod and used for driving the clamping assembly. Preferably, the clamping assembly comprises: The cross grooves are circumferentially equidistantly formed in the disc, and the inner wall of each cross groove is connected with a cross sliding rod in a sliding manner; the rotating sleeve is rotationally connected to the outer wall of the fixed ring and is rectangular, and four corners of the rotating sleeve are hinged with the cross slide bar through the arc-shaped rod; The U-shaped connecting rod is connected with the hinged part of one of the arc rods and the cross slide rod and is used for pushing the cross slide rod to move. Preferably, the clamping assembly further comprises: the arc-shaped inner sides of the arc-shaped compression bars are attached to the outer wall of the cylindrical part and are used for clamping the cylindrical part; the fixed plate is fixedly connected to the outer wall of the cross slide bar and is positioned at the outer side of the arc-shaped compression bar; The plurality of abutting plates are respectively and fixedly connected to the rotating parts of the outer walls of the arc-shaped compression bars, which are far away from the arc-shaped compression bars; and the first springs are fixedly connected between the fixing plate and the abutting plate and are used for pushing the abutting plate to abut against the arc-shaped pressing rod to be attached to the outer wall of the cylindrical part. Preferably, the rotation mechanism includes: two circular rails fixedly connected to the outer walls of the discs on two sides respectively; the two circular supporting seats are arranged above the spraying table, and the circular rail is positioned on the circular supporting seats to rotate; the two brackets are respectively and fixedly connected to the outer walls of the two circular sup