Plasma spraying protection device and method for metal universal shaft

Abstract

The plasma spraying protection device comprises a conveying box, a conveying mechanism is arranged in the conveying box, adjusting holes are formed in the two sides of the conveying box, a discharging hole is formed in the right side of the conveying box, and a material guiding box is fixedly arranged on the inner wall of the bottom of the discharging hole; the material guide box is obliquely arranged and is matched with the conveying mechanism; the two universal shaft fixing and adjusting mechanisms are matched with the two adjusting holes, and the two universal shaft fixing and adjusting mechanisms are symmetrically arranged on the two sides of the conveying box; the two displacement mechanisms are oppositely arranged on the two sides of the conveying box and located on the bottom edges of the adjusting holes. The device can adapt to fixing of cardan shafts of different sizes by adjusting the position of the arc-shaped plate, the cardan shafts can be controlled to rotate by 360 degrees, comprehensive plasma spraying is achieved, continuous bending can be achieved, the angle can be changed, plasma can be sprayed to the joint positions of the cardan shafts, and the metal protection effect is further improved.

Description

Technical Field

[0001] The invention relates to the technical field of metal protection, and in particular to a plasma spraying protection device and method for a metal universal shaft. Background Art

[0002] Plasma spraying is a thermal spraying process that forms a coating on a material surface by heating particles to high temperatures and accelerating them onto a substrate. This technology uses a high-energy heat source to melt fine particles and rapidly cools and solidifies to form a layered coating.

[0003] After searching, the publication (announcement) number: CN221460481U discloses a plasma spraying workpiece tooling protection device, including a substrate, and also including: a groove, which is opened on the substrate, and the groove is a well-shaped groove, and the groove extends from the surface of the substrate to the inside of the substrate; a hole, which is opened on the substrate, and the hole is opened on the narrow surface of the bottom surface of the groove; and a supporting mechanism, which is used to support the substrate; the groove can protect the unsprayed surface of the workpiece to be sprayed when it is sprayed, so as to improve the working efficiency of the plasma spraying tooling, reduce its cost, and compensate for the phenomenon of coating shedding on the edge of the workpiece after plasma spraying.

[0004] When a plasma spraying device in the prior art sprays a workpiece, a plasma spray gun is generally used to spray the surface of the universal shaft, so that a plasma protective film is formed on the surface of the universal shaft to protect the universal shaft. Since the spray gun is in a stationary state during spraying, when the universal shaft is sprayed in this way, the plasma spraying of the universal shaft will not be comprehensive, and the joint position of the universal shaft will not be fully plasma sprayed. Summary of the invention

[0005] In order to overcome the shortcomings of the prior art, the present invention provides a plasma spraying protection device and method for a metal universal shaft. When the plasma spraying device of the prior art sprays a workpiece, a plasma spray gun is generally used to spray the surface of the universal shaft, so that a plasma protection film is formed on the surface of the universal shaft to protect the universal shaft. Since the spray gun is in a stationary state during spraying, when the universal shaft is sprayed in this way, the plasma spraying of the universal shaft is not comprehensive, and the joint position of the universal shaft cannot be fully plasma sprayed. Technical problems.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a plasma spraying protection device for a metal universal shaft, comprising: A conveying box, a conveying mechanism is arranged inside the conveying box, adjustment holes are opened on both sides of the conveying box, a discharge hole is opened on the right side of the conveying box, a material guide box is fixedly arranged on the inner wall at the bottom of the discharge hole, and the material guide box is inclined and cooperates with the conveying mechanism; Two universal shaft fixing adjustment mechanisms are matched with the two adjustment holes, and the two universal shaft fixing adjustment mechanisms are symmetrically arranged on both sides of the conveying box; Two displacement mechanisms are arranged on both sides of the transmission box and located at the bottom of the adjustment hole, and two universal shaft fixed adjustment mechanisms are arranged on the top of the two displacement mechanisms; The plasma spraying mechanism is arranged on the conveying box and is used for performing plasma spraying on the universal shaft to achieve the purpose of metal protection.

[0007] Preferably, the conveying mechanism includes two conveying rollers, both of which are rotatably installed inside a conveying box through bearings, the outer sides of the two conveying rollers are connected to the same conveyor belt, a stepper motor is installed on the outer side of the conveying box, the output shaft of the stepper motor is fixedly connected to a conveying roller, and a plurality of oil leakage holes are opened on the top of the conveyor belt; the conveyor belt can be made of metal chain link material.

[0008] Preferably, the displacement mechanism includes two vertical electric push rods, both of which are installed on the outside of the conveying box, and the same support plate is installed on the output shafts of the two vertical electric push rods. The universal shaft fixing adjustment mechanism is slidably installed on the top of the corresponding support plate, and two horizontal electric push rods are horizontally arranged on the top of the support plate. The output shafts of the two horizontal electric push rods are fixedly connected to the universal shaft fixing adjustment mechanism; the support plate is slidably connected to the outside of the conveying box.

[0009] Preferably, the universal shaft fixed adjustment mechanism includes a rectangular block, which is slidably mounted on the top of the support plate and fixedly mounted to the output shafts of the two transverse electric push rods. The rectangular block is slidably connected to the inner wall of the adjustment hole. The height of the rectangular block is smaller than the height of the adjustment hole, so that the rectangular block can move vertically in the adjustment hole.

[0010] Preferably, a rectangular groove is provided on the inner side of the rectangular block, a fixing box is slidably installed in the rectangular groove, two cylinders are symmetrically fixedly installed on the inner wall of the fixing box, the same clamping rod is installed on the output shafts of the two cylinders, arc-shaped clamping plates are fixedly installed on the outer ends of the two clamping rods, two strip sliding holes are symmetrically provided on the fixing box, the two clamping rods are slidably connected to the inner walls of the two strip sliding holes, a limiting rod is fixedly installed on the fixing box, and the two clamping rods are slidably installed on the outer sides of the limiting rod; the two cylinders push the corresponding two clamping rods and the two arc-shaped clamping plates to approach each other, so that the universal shaft can be clamped and fixed, and can adapt to the fixing of universal shafts of different sizes.

[0011] Preferably, a sealing plate is fixedly installed on the rear side of the fixed box, a column rod is fixedly installed on the rear side of the sealing plate, a circular hole is opened on the column rod, a reciprocating screw rod is movably arranged in the circular hole, a reciprocating screw rod groove is opened on the reciprocating screw rod, a servo motor is fixedly installed on the inner wall of the rectangular groove, and the output shaft of the servo motor is fixedly installed with the reciprocating screw rod.

[0012] Preferably, an annular groove is provided on the sealing plate, in which an arc plate is slidably installed, and a limiting ring is fixedly installed on the inner wall of the annular groove, and the arc plate is slidably connected to the inner wall of the annular groove through the limiting ring, so that the arc plate and the sealing plate can rotate relative to each other through the annular groove, and when the sealing plate rotates, the arc plate will not rotate, and a round rod is fixedly installed at the bottom of the arc plate, and a ball is embedded in the bottom of the round rod, and the round rod is slidably connected to the inner wall of the reciprocating screw groove through the ball; the round rod slides in the reciprocating screw groove through the ball, so that the round rod is squeezed, and the round rod is fixedly connected to the arc plate, so that the arc plate pushes the sealing plate and the fixed box to reciprocate back and forth.

[0013] Preferably, bead rods are fixedly installed on both sides of the reciprocating screw, and two elongated bead grooves are symmetrically opened on the inner wall of the circular hole, and the two bead rods are slidably connected to the inner walls of the two elongated bead grooves; the reciprocating screw drives the column rod to rotate through the cooperation of the bead rod and the elongated bead groove, and the bead rod and the elongated bead groove can only slide horizontally.

[0014] Preferably, a slider is fixedly installed on the top of the arc plate, notches are provided on both sides of the slider, a slide groove is provided on the top inner wall of the rectangular groove, notch bars are fixedly installed on the inner walls on both sides of the slide groove, and the slider is slidably connected to the inner wall of the slide groove through the cooperation of the two notches and the two notch bars; the arc plate can only move horizontally forward and backward through the cooperation of the slider and the slide groove.

[0015] Preferably, the plasma spraying mechanism includes an n-type plate, which is fixedly mounted on the top of the conveying box, a reciprocating linear motor is fixedly mounted on the inner wall of one side of the n-type plate, a clamping block is mounted on the output shaft of the reciprocating linear motor, a clamping port is provided on the clamping block, a plasma spray gun is provided on the clamping port, a particle inlet pipe and an inert gas inlet pipe are provided on the plasma spray gun, two strip holes are provided on the n-type plate, the particle inlet pipe and the inert gas inlet pipe are movably connected to the two strip holes, the particle inlet pipe is connected to a particle delivery pipe, the particle delivery pipe is connected to a particle delivery pump, the particle delivery pump is connected to a plasma generator, a support plate is fixedly mounted on the top of the conveying box, the plasma generator is mounted on the top of the support plate, the inert gas inlet pipe is connected to a gas delivery pipe, the gas delivery pipe is connected to an inert gas tank, and an intelligent pressure valve is provided on the gas delivery pipe.

[0016] Preferably, a sensor is provided at the bottom of the n-type plate, and the sensor is located just above between the two universal shaft fixing adjustment mechanisms.

[0017] The present invention also proposes a method for using a plasma spraying protection device for a metal universal shaft, which is applied to the above-mentioned plasma spraying protection device and includes the following steps: S1: Before use, turn on the power supply and computer controller, and pre-store the oil in the oil tank; S2: Place the universal joint on the top of the conveyor belt, with the two end shafts of the universal joint facing the inner walls of the conveyor box on both sides. The stepper motor drives a conveyor roller to rotate, and the conveyor belt drives the universal joint to move forward through the cooperation of the other conveyor roller until the universal joint moves between the two universal joint fixing adjustment mechanisms. The universal joint is monitored by two sensors, and the stepper motor stops working. S3: Four lateral electric push rods push two rectangular blocks closer to each other, and the rectangular blocks drive the corresponding two arc-shaped clamping plates closer to the position of the universal shaft until the two arc-shaped clamping plates move to the outside of the end of the universal shaft. Two cylinders push the corresponding two clamping rods and two arc-shaped clamping plates closer to each other, so that the universal shaft can be clamped and fixed, which can adapt to the fixing of universal shafts of different sizes; S4: Two vertical electric push rods push the rectangular block upward through the support plate, and the rectangular block drives the universal shaft to move upward through two arc-shaped clamping plates. Since the universal shaft fixing and adjusting mechanism is symmetrically arranged, the two ends of the universal shaft can be clamped and fixed and pushed upward, so that the universal shaft leaves the conveyor belt; S5: The intelligent pressure valve works, the inert gas enters the plasma spray gun through the gas delivery pipe and the inert gas inlet pipe, and the gas pressure is automatically controlled. The particle delivery pump works to deliver particles through the particle delivery pipe and the particle inlet pipe into the plasma spray gun. The particles are sprayed on the surface of the universal shaft under the action of the inert gas pressure to protect the metal surface. The reciprocating linear motor drives the block to make reciprocating linear motion, and the block drives the plasma spray gun to reciprocate horizontally to spray plasma evenly on the universal shaft. When the plasma spray gun moves, it drives the particle inlet pipe and the inert gas inlet pipe to move in the two strip holes; S6: Two servo motors drive two reciprocating screws to rotate. The two reciprocating screws drive the column rod to rotate through the cooperation of the ball slide rod and the long ball slide groove. The column rod drives the universal shaft to rotate 360° through the sealing plate, the fixing box, and the two arc clamping plates. The universal shaft can be fully sprayed with plasma. At the same time, the arc plate ensures that the arc plate and the sealing plate rotate relative to each other through the annular groove through the cooperation of the slider and the slide groove, and the arc plate will not rotate. The arc plate can only move horizontally forward and backward through the cooperation of the slider and the slide groove. Due to the reciprocating screw rod Rotate, so that the round rod slides in the reciprocating screw groove through the ball bearing, so that the round rod is squeezed, and the round rod is fixedly connected with the arc plate, so that the arc plate pushes the sealing plate and the fixed box to reciprocate back and forth, so that the fixed box drives the universal shaft through the two arc clamping plates to not only rotate, but also bend continuously and change the angle, so that the joint position of the universal shaft can be sprayed with plasma, further improving the metal protection effect. After the plasma spraying of the universal shaft is completed, the fixation of the universal shaft is released, and the two universal shaft fixing adjustment mechanisms are reset; S7: The conveyor belt continues to transport the cardan shaft and then discharges it through the guide box.

[0018] Compared with the prior art, the present invention can achieve the following beneficial effects: 1. Four horizontal electric push rods push two rectangular blocks closer to each other, and the rectangular blocks drive the corresponding two arc-shaped clamping plates close to the position of the universal joint until the two arc-shaped clamping plates move to the outside of the end of the universal joint. Two cylinders push the corresponding two clamping rods and two arc-shaped clamping plates closer to each other, which can clamp and fix the universal joint, and can adapt to the fixation of universal joints of different sizes.

[0019] 2. When the intelligent pressure valve works, the inert gas enters the plasma spray gun through the gas delivery pipe and the inert gas inlet pipe, and the gas pressure is automatically controlled. When the particle delivery pump works, the particles are delivered into the plasma spray gun through the particle delivery pipe and the particle inlet pipe. The particles are sprayed on the surface of the universal shaft under the action of the inert gas pressure to protect the metal surface. The reciprocating linear motor drives the block to make reciprocating linear motion, and the block drives the plasma spray gun to reciprocate horizontally, spraying plasma evenly on the universal shaft. When the plasma spray gun moves, it drives the particle inlet pipe and the inert gas inlet pipe to move in the two strip holes. Using inert gas spraying can reduce the degree of particle oxidation; 3. Two servo motors drive two reciprocating screws to rotate. The two reciprocating screws drive the column rod to rotate through the cooperation of the sliding ball rod and the long sliding ball groove. The column rod drives the universal shaft to rotate 360° through the sealing plate, the fixing box, and the two arc-shaped clamping plates, and the universal shaft can be fully sprayed with plasma.

[0020] 4. Due to the cooperation of the slider and the slide groove of the arc plate, the arc plate and the sealing plate rotate relative to each other through the annular groove, and the arc plate does not rotate. The arc plate can only move horizontally forward and backward through the cooperation of the slider and the slide groove. Due to the rotation of the reciprocating screw, the round rod slides in the reciprocating screw groove through the ball bearing, so that the round rod is squeezed. The round rod and the arc plate are fixedly connected, so that the arc plate pushes the sealing plate and the fixed box to reciprocate back and forth, so that the fixed box drives the universal shaft through the two arc splints. It can not only rotate, but also bend continuously and change the angle, so that the joint position of the universal shaft can be sprayed with plasma, further improving the metal protection effect.

[0021] In summary, the present invention can adapt to the fixation of universal joints of different sizes by adjusting the position of the arc plate. It can not only control the universal joint to rotate 360° to achieve comprehensive plasma spraying, but also can continuously bend and change the angle, so that the joint position of the universal joint can spray plasma, further improving the metal protection effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the main structure of the present invention; Figure 2 It is a bottom view structural schematic diagram of the present invention; Figure 3It is a side view structural schematic diagram of the present invention; Figure 4 For the present invention Figure 1 A schematic diagram of the structure of the plasma spraying mechanism during disassembly; Figure 5 For the present invention Figure 4 A side view structural schematic diagram of; Figure 6 It is a structural schematic diagram of the conveying roller of the present invention; Figure 7 It is a structural schematic diagram of the conveying box, the guide plate, the triangular plate, the vertical electric push rod and related parts of the present invention; Figure 8 It is a schematic diagram of the structure of the rectangular block, rectangular groove and slide groove of the present invention; Fig. 9 It is a perspective structural diagram of the fixing box, two arc-shaped clamping plates, a sealing plate, an arc-shaped plate, a servo motor and related parts of the present invention; Fig.10 For the present invention Fig. 9 A schematic diagram of a side view of the structure; Fig.11 It is a schematic diagram of the exploded structure of the fixing box, two arc-shaped clamping plates, a sealing plate, an arc-shaped plate, a servo motor and related parts of the present invention; Fig.12 For the present invention Fig.11 Schematic diagram of the structure viewed from above; Fig.13 It is a structural schematic diagram of a pole of the present invention; Fig.14 It is a structural schematic diagram of the plasma spraying mechanism of the present invention; Fig.15 It is a schematic diagram of the structure of the plasma spraying mechanism of the present invention when viewed from above; Fig.16 It is a bottom view structural schematic diagram of the n-type plate, linear reciprocating motor, sensor and related parts of the present invention; Fig.17 It is a schematic diagram of the structure of the plasma spray gun, particle inlet pipe and inert gas inlet pipe of the present invention.

[0023] Among them: 1. conveying box; 11. discharge hole; 12. material guide box; 13. triangle plate; 14. oil drain pipe; 15. adjustment hole; 2. Conveying mechanism; 21. Conveying roller; 22. Conveying belt; 23. Oil leakage hole; 24. Stepping motor; 3. Universal shaft fixing adjustment mechanism; 31. Rectangular block; 311. Rectangular groove; 312. Slide groove; 32. Arc clamping plate; 321. Clamping rod; 322. Cylinder; 323. Limit rod; 33. Fixed box; 331. Strip slide hole; 34. Servo motor; 35. Reciprocating screw rod; 351. Reciprocating screw rod groove; 352. Slide ball rod; 36. Column rod; 361. Round hole; 362. Long slide ball groove; 37. Sealing plate; 371. Annular groove; 372. Limit ring; 38. Arc plate; 381. Sliding block; 382. Notch; 383. Round rod; 384. Ball; 4. Plasma spraying mechanism; 41. n-type plate; 411. strip hole; 42. support plate; 421. plasma generator; 422. particle delivery pump; 423. particle delivery pipe; 43. inert gas tank; 431. intelligent pressure valve; 432. gas delivery pipe; 44. sensor; 45. plasma spray gun; 451. particle inlet pipe; 452. inert gas inlet pipe; 46. reciprocating linear motor; 47. block; 471. bayonet; 5. Support plate; 51. Horizontal electric push rod; 52. Vertical electric push rod. DETAILED DESCRIPTION

[0024] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific embodiments, but the following embodiments are only preferred embodiments of the present invention, not all. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without creative work all belong to the protection scope of the present invention. The experimental methods in the following embodiments, unless otherwise specified, are conventional methods, and the materials, reagents, etc. used in the following embodiments, unless otherwise specified, can all be obtained from commercial channels. Example

[0025] like Figure 1-Figure 4 As shown, the present invention provides a plasma spraying protection device for a metal universal shaft, comprising a conveying box 1, two universal shaft fixing adjustment mechanisms 3, two displacement mechanisms and a plasma spraying mechanism 4, a conveying mechanism 2 is arranged inside the conveying box 1, adjustment holes 15 are opened on both sides of the conveying box 1, a discharge hole 11 is opened on the right side of the conveying box 1, a material guide box 12 is fixedly arranged on the bottom inner wall of the discharge hole 11, the material guide box 12 is inclined and cooperates with the conveying mechanism 2, two universal shaft fixing adjustment mechanisms 3 cooperate with the two adjustment holes 15, two universal shaft fixing adjustment mechanisms 3 are symmetrically arranged on both sides of the conveying box 1, two displacement mechanisms are arranged on both sides of the conveying box 1, located at the bottom of the adjustment hole 15, two universal shaft fixing adjustment mechanisms 3 are arranged on the top of the two displacement mechanisms, and the plasma spraying mechanism 4 is arranged on the conveying box 1, and is used to perform plasma spraying on the universal shaft to achieve the purpose of metal protection.

[0026] Specifically, the universal shaft has two ends and a plurality of joints, and can be folded and adjusted at multiple angles.

[0027] like Figure 1-Figure 4 , Figure 5 , Figure 6 As shown, in this embodiment, the conveying mechanism 2 includes two conveying rollers 21, and the two conveying rollers 21 are rotatably installed inside the conveying box 1 through bearings. The outer sides of the two conveying rollers 21 are connected to the same conveying belt 22. A stepper motor 24 is installed on the outer side of the conveying box 1. The output shaft of the stepper motor 24 is fixedly connected to one of the conveying rollers 21. A plurality of oil leakage holes 23 are opened on the top of the conveying belt 22, and the conveying belt 22 can be made of metal chain link material.

[0028] like Figure 2-Figure 4 As shown, in this embodiment, the displacement mechanism includes two vertical electric push rods 52, and the two vertical electric push rods 52 are both installed on the outside of the conveying box 1. The same support plate 5 is installed on the output shafts of the two vertical electric push rods 52. The universal joint fixing adjustment mechanism 3 is slidably installed on the top of the corresponding support plate 5. Two horizontal electric push rods 51 are horizontally arranged on the top of the support plate 5, and the output shafts of the two horizontal electric push rods 51 are fixedly connected to the universal joint fixing adjustment mechanism 3.

[0029] Specifically, the support plate 5 is slidably connected to the outer side of the conveying box 1, four horizontal electric push rods 51 push the two rectangular blocks 31 closer to each other, and four vertical electric push rods 52 push the two rectangular blocks 31 upward through the two support plates 5, driving the universal joint to adjust the height, which is convenient for plasma spraying.

[0030] As shown Figure 5 , 7 - Figure 8 As shown, in this embodiment, the universal joint fixed adjustment mechanism 3 includes a rectangular block 31, which is slidably installed on the top of the support plate 5 and fixedly installed with the output shafts of the two horizontal electric push rods 51. The rectangular block 31 is slidably connected to the inner wall of the adjustment hole 15. The height dimension of the rectangular block 31 is smaller than the height dimension of the adjustment hole 15, so that the rectangular block 31 can move vertically in the adjustment hole 15.

[0031] like Figure 7-Figure 13As shown, in this embodiment, a rectangular groove 311 is provided on the inner side of the rectangular block 31, and a fixed box 33 is slidably installed in the rectangular groove 311. Two cylinders 322 are symmetrically fixedly installed on the inner wall of the fixed box 33. The same clamping rod 321 is installed on the output shafts of the two cylinders 322. The outer ends of the two clamping rods 321 are fixedly installed with arc clamping plates 32. Two strip sliding holes 331 are symmetrically provided on the fixed box 33. The two clamping rods 321 are slidably connected to the inner walls of the two strip sliding holes 331. A limiting rod 323 is fixedly installed on the fixed box 33, and the two clamping rods 321 are slidably installed on the outer side of the limiting rod 323.

[0032] Specifically, the two cylinders 322 push the corresponding two clamping rods 321 and the two arc-shaped clamping plates 32 closer to each other, so as to clamp and fix the universal shaft, and can adapt to the fixing of universal shafts of different sizes.

[0033] like Figure 9-13 As shown, in this embodiment, a sealing plate 37 is fixedly installed on the rear side of the fixing box 33, and a column 36 is fixedly installed on the rear side of the sealing plate 37. A circular hole 361 is opened on the column 36, and a reciprocating screw rod 35 is movably arranged in the circular hole 361. A reciprocating screw rod groove 351 is opened on the reciprocating screw rod 35, and a servo motor 34 is fixedly installed on the inner wall of the rectangular groove 311. The output shaft of the servo motor 34 is fixedly installed with the reciprocating screw rod 35, and an annular groove 371 is opened on the sealing plate 37. A The arc plate 38 and the inner wall of the annular groove 371 are fixedly installed with a limiting ring 372. The arc plate 38 is slidably connected to the inner wall of the annular groove 371 through the limiting ring 372, so that the arc plate 38 and the sealing plate 37 can rotate relative to each other through the annular groove 371. When the sealing plate 37 rotates, the arc plate 38 will not rotate. A round rod 383 is fixedly installed at the bottom of the arc plate 38, and a ball 384 is embedded in the bottom of the round rod 383. The round rod 383 is slidably connected to the inner wall of the reciprocating screw groove 351 through the ball 384.

[0034] Specifically, the round rod 383 slides in the reciprocating screw groove 351 through the ball 384, so that the round rod 383 is squeezed, and the round rod 383 is fixedly connected to the arc plate 38, so that the arc plate 38 pushes the sealing plate 37 and the fixed box 33 to reciprocate back and forth.

[0035] like Figure 8-Figure 13As shown, in this embodiment, bead rods 352 are fixedly installed on both sides of the reciprocating screw rod 35, and two elongated bead grooves 362 are symmetrically provided on the inner wall of the circular hole 361, and the two bead rods 352 are slidably connected to the inner walls of the two elongated bead grooves 362; the reciprocating screw rod 35 drives the column rod 36 to rotate through the cooperation of the bead rod 352 and the elongated bead groove 362, and the bead rod 352 and the elongated bead groove 362 can only slide horizontally, and a slider 381 is fixedly installed on the top of the arc plate 38, and notches 382 are provided on both sides of the slider 381, and a slide groove 312 is provided on the inner wall of the top of the rectangular groove 311, and notch bars are fixedly installed on the inner walls of both sides of the slide groove 312, and the slider 381 is slidably connected to the inner wall of the slide groove 312 through the cooperation of the two notches 382 and the two notch bars; the arc plate 38 can only move horizontally back and forth through the cooperation of the slider 381 and the slide groove 312.

[0036] like Figure 1-Figure 3 , Figure 14-17 , as shown, in this embodiment, the plasma spraying mechanism 4 includes an n-type plate 41, the n-type plate 41 is fixedly installed on the top of the conveying box 1, a reciprocating linear motor 46 is fixedly installed on the inner wall of one side of the n-type plate 41, a clamping block 47 is installed on the output shaft of the reciprocating linear motor 46, a clamping block 47 is provided on the clamping block 47, a clamping port 471 is provided on the clamping port 471, a plasma spray gun 45 is provided on the clamping port 471, a particle inlet pipe 451 and an inert gas inlet pipe 452 are provided on the plasma spray gun 45, two strip holes 411 are provided on the n-type plate 41, the particle inlet pipe 451 and the inert gas inlet pipe 452 are movably connected with the two strip holes 411, and the particle inlet The tube 451 is connected to a particle delivery tube 423, the particle delivery tube 423 is connected to a particle delivery pump 422, the particle delivery pump 422 is connected to a plasma generator 421, a support plate 42 is fixedly installed on the top of the conveying box 1, the plasma generator 421 is installed on the top of the support plate 42, the inert gas inlet tube 452 is connected to a gas delivery tube 432, the gas delivery tube 432 is connected to an inert gas tank 43, an intelligent pressure valve 431 is arranged on the gas delivery tube 432, a sensor 44 is arranged at the bottom of the n-type plate 41, and the sensor 44 is located directly above between the two universal shaft fixing adjustment mechanisms 3.

[0037] Specifically, the plasma generator 421 can generate particles, the particle delivery pump 422 delivers the generated particles into the plasma spray gun 45, the particle delivery pipe 423 is a metal hose, and the inert gas is nitrogen. Example

[0038] This embodiment is further optimized on the basis of the first embodiment, and the same parts as the above technical solution will not be repeated here. Fig.15As shown, in order to better realize the present invention, the following setting is particularly adopted: In this embodiment, the sensor 44 is a measuring light curtain sensor, which is an infrared sensor, and is a high-precision light curtain with higher technical requirements derived from the safety light curtain. The measuring light curtain is also a special photoelectric sensor. The measuring light curtain can provide a variety of non-contact measurement solutions, which can not only sense the position of the universal shaft, but also measure the size of the universal shaft and feed it back to the computer controller. After the computer controller obtains the size of the universal shaft, the linear reciprocating motor 46 drives the plasma spray gun 45 to move a distance that meets the size of the universal shaft for full spraying.

[0039] like Figure 1-Figure 17 As shown, the present invention also proposes a method for using a plasma spraying protection device for a metal universal shaft, which is applied to the above-mentioned plasma spraying protection device and includes the following steps: S1: Before use, turn on the power supply and computer controller, and pre-store oil in the oil tank 42; S2: Place the universal shaft on the top of the conveyor belt 22, with the two end shafts of the universal shaft facing the inner walls of the conveyor box 1 on both sides. The stepper motor 24 drives one conveyor roller 21 to rotate. Through the cooperation of the other conveyor roller 21, the conveyor belt 22 drives the universal shaft to move forward until the universal shaft moves between the two universal shaft fixing adjustment mechanisms 3. The universal shaft is monitored by two sensors 44, and the stepper motor 24 stops working. S3: The four lateral electric push rods 51 push the two rectangular blocks 31 closer to each other, and the rectangular blocks 31 drive the corresponding two arc-shaped clamping plates 32 to approach the position of the universal shaft until the two arc-shaped clamping plates 32 move to the outside of the end of the universal shaft, and the two cylinders 322 push the corresponding two clamping rods 321 and the two arc-shaped clamping plates 32 closer to each other, so that the universal shaft can be clamped and fixed, which can adapt to the fixing of universal shafts of different sizes; S4: Two vertical electric push rods 52 push the rectangular block 31 upward through the support plate 5, and the rectangular block 31 drives the universal shaft to move upward through the two arc-shaped clamping plates 32. Since the universal shaft fixing and adjusting mechanism 3 is symmetrically arranged, the two ends of the universal shaft can be clamped and fixed and pushed upward, so that the universal shaft leaves the conveyor belt 22; S5: the intelligent pressure valve 431 works, the inert gas enters the plasma spray gun 45 through the gas delivery pipe 432 and the inert gas inlet pipe 452, and the gas pressure is automatically controlled. The particle delivery pump 422 works to deliver particles through the particle delivery pipe 432 and the particle inlet pipe 451 into the plasma spray gun 45. The particles are sprayed on the surface of the universal shaft under the action of the gas pressure of the inert gas to protect the metal surface. The reciprocating linear motor 46 drives the block 47 to perform reciprocating linear motion. The block 47 drives the plasma spray gun 45 to reciprocate laterally to evenly spray plasma on the universal shaft. When the plasma spray gun 45 moves, it drives the particle inlet pipe 451 and the inert gas inlet pipe 452 to move in the two strip holes 411; S6: Two servo motors 34 drive two reciprocating screws 35 to rotate, and the two reciprocating screws 35 drive the column 36 to rotate through the cooperation of the ball slide rod 352 and the long ball slide groove 362. The column 36 drives the universal shaft to rotate 360 ​​degrees through the sealing plate 37, the fixing box 33, and the two arc-shaped clamping plates 32, so that the universal shaft can be fully sprayed with plasma. At the same time, since the arc plate 38 cooperates with the slider 381 and the slide groove 312 to ensure that the arc plate 38 and the sealing plate 37 rotate relative to each other through the annular groove 371, and the arc plate 38 will not rotate, the arc plate 38 can only move horizontally forward and backward through the cooperation of the slider 381 and the slide groove 312. Due to the rotation of the reciprocating screw 35, the round rod 383 slides in the reciprocating screw groove 351 through the ball 384, so that the round rod 383 is squeezed, and the round rod 383 is fixedly connected to the arc plate 38, so that the arc plate 38 pushes the sealing plate 37 and the fixed box 33 to reciprocate back and forth, so that the fixed box 33 drives the universal shaft through the two arc clamping plates 32 to not only rotate, but also bend continuously and change the angle, so that the joint position of the universal shaft can be sprayed with plasma, further improving the metal protection effect, and after the plasma spraying of the universal shaft is completed, the fixation of the universal shaft is released, and the two universal shaft fixing adjustment mechanisms 3 are reset; S7: The conveyor belt 22 continues to convey the universal shaft, and then it is guided out through the guide box 12.

[0040] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A plasma spraying protective device for a metal universal shaft, characterized in that: include: A conveying box (1), wherein a conveying mechanism (2) is arranged inside the conveying box (1), adjustment holes (15) are provided on both sides of the conveying box (1), a discharge hole (11) is provided on the right side of the conveying box (1), a material guide box (12) is fixedly arranged on the inner wall of the bottom of the discharge hole (11), and the material guide box (12) is arranged obliquely and cooperates with the conveying mechanism (2); Two universal shaft fixing adjustment mechanisms (3) are matched with the two adjustment holes (15), and the two universal shaft fixing adjustment mechanisms (3) are symmetrically arranged on both sides of the transmission box (1); Two displacement mechanisms are arranged on both sides of the transmission box (1) and are located at the bottom of the adjustment hole (15); two universal shaft fixing adjustment mechanisms (3) are arranged on the top of the two displacement mechanisms; The plasma spraying mechanism (4) is arranged on the conveying box (1).

2. The plasma spraying protection device for a metal universal shaft according to claim 1, characterized in that: The conveying mechanism (2) comprises two conveying rollers (21), the two conveying rollers (21) are rotatably mounted inside the conveying box (1) via bearings, the outer sides of the two conveying rollers (21) are connected to the same conveying belt (22), a stepping motor (24) is mounted on the outer side of the conveying box (1), the output shaft of the stepping motor (24) is fixedly connected to one of the conveying rollers (21), and a plurality of oil leakage holes (23) are provided on the top of the conveying belt (22).

3. The plasma spraying protection device for a metal universal shaft according to claim 1, characterized in that: The displacement mechanism comprises two vertical electric push rods (52), the two vertical electric push rods (52) are both mounted on the outside of the conveying box (1), the same support plate (5) is mounted on the output shafts of the two vertical electric push rods (52), a universal shaft fixing adjustment mechanism (3) is slidably mounted on the top of the corresponding support plate (5), two horizontal electric push rods (51) are horizontally arranged on the top of the support plate (5), and the output shafts of the two horizontal electric push rods (51) are both fixedly connected to the universal shaft fixing adjustment mechanism (3).

4. The plasma spraying protection device for a metal universal shaft according to claim 3, characterized in that: The universal shaft fixing and adjusting mechanism (3) comprises a rectangular block (31), the rectangular block (31) being slidably mounted on the top of the support plate (5) and fixedly mounted on the output shafts of the two transverse electric push rods (51), the rectangular block (31) being slidably connected to the inner wall of the adjusting hole (15), the height dimension of the rectangular block (31) being smaller than the height dimension of the adjusting hole (15), a rectangular groove (311) being provided on the inner side of the rectangular block (31), a fixing box (33) being slidably mounted in the rectangular groove (311), and the inner wall of the fixing box (33) being symmetrically fixed. Two cylinders (322) are fixedly installed, the same clamping rod (321) is installed on the output shafts of the two cylinders (322), the outer ends of the two clamping rods (321) are fixedly installed with arc clamping plates (32), two strip-shaped sliding holes (331) are symmetrically opened on the fixed box (33), the two clamping rods (321) are slidably connected to the inner walls of the two strip-shaped sliding holes (331), a limit rod (323) is fixedly installed on the fixed box (33), and the two clamping rods (321) are slidably installed on the outer sides of the limit rod (323).

5. The plasma spraying protection device for a metal universal shaft according to claim 4, characterized in that: A sealing plate (37) is fixedly mounted on the rear side of the fixed box (33), a column (36) is fixedly mounted on the rear side of the sealing plate (37), a circular hole (361) is formed on the column (36), a reciprocating screw (35) is movably arranged in the circular hole (361), a reciprocating screw (35) is formed on the reciprocating screw (35) groove (351), a servo motor (34) is fixedly mounted on the inner wall of the rectangular groove (311), and an output shaft of the servo motor (34) is fixedly mounted on the reciprocating screw (35).

6. The plasma spraying protection device for a metal universal shaft according to claim 5, characterized in that: The sealing plate (37) is provided with an annular groove (371), an arc plate (38) is slidably mounted in the annular groove (371), a limit ring (372) is fixedly mounted on the inner wall of the annular groove (371), the arc plate (38) is slidably connected to the inner wall of the annular groove (371) via the limit ring (372), a round rod (383) is fixedly mounted on the bottom of the arc plate (38), a ball (384) is embedded in the bottom of the round rod (383), and the round rod (383) is slidably connected to the inner wall of the reciprocating screw groove (351) via the ball (384).

7. The plasma spraying protection device and method for a metal universal shaft according to claim 5, characterized in that: A ball slide rod (352) is fixedly mounted on both sides of the reciprocating screw rod (35), two elongated ball slide grooves (362) are symmetrically provided on the inner wall of the circular hole (361), and the two ball slide rods (352) are slidably connected to the inner walls of the two elongated ball slide grooves (362), a slider (381) is fixedly mounted on the top of the arc plate (38), and notches (382) are provided on both sides of the slider (381), a slider (312) is provided on the inner wall of the top of the rectangular groove (311), and notch bars are fixedly mounted on the inner walls of both sides of the slider (312), and the slider (381) is slidably connected to the inner wall of the slider (312) through the cooperation of the two notches (382) and the two notch bars.

8. The plasma spraying protection device for a metal universal shaft according to claim 1, characterized in that: The plasma spraying mechanism ((4)) comprises an n-type plate ((41)), the n-type plate ((41)) being fixedly mounted on the top of the conveying box ((1)), a reciprocating linear motor (46) being fixedly mounted on the inner wall of one side of the n-type plate ((41)), a clamping block (47) being mounted on the output shaft of the reciprocating linear motor (46), a clamping port (471) being provided on the clamping block (47), a plasma spray gun (45) being provided on the clamping port (471), a particle inlet pipe (451) and an inert gas inlet pipe (452) being provided on the plasma spray gun (45), two strip holes (411) being provided on the n-type plate (41), the particle inlet pipe (451) and the inert gas inlet pipe (452) being provided on the n-type plate (41), The tube (452) is movably connected to the two strip holes (411); the particle inlet tube (451) is connected to a particle delivery tube (423); the particle delivery tube (423) is connected to a particle delivery pump (422); the particle delivery pump (422) is connected to a plasma generator (421); a support plate (42) is fixedly installed on the top of the transfer box ((1)); the plasma generator (421) is installed on the top of the support plate (42); the inert gas inlet tube (452) is connected to a gas delivery tube (432); the gas delivery tube (432) is connected to an inert gas tank (43); and an intelligent pressure valve (431) is provided on the gas delivery tube (432).

9. The plasma spraying protection device for a metal universal shaft according to claim 1, characterized in that: A sensor 44 is provided at the bottom of the n-type plate (41), and the sensor 44 is located directly above between the two universal shaft fixing adjustment mechanisms (3).

10. A method for using a plasma spraying protection device for a metal universal shaft, applied to the plasma spraying protection device according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1: Before use, turn on the power supply and computer controller, and pre-store oil in the oil tank (42); S2: Place the universal joint on top of the conveyor belt (22), with the two end shafts of the universal joint facing the inner walls on both sides of the conveyor box (1), and the stepper motor (24) drives a conveyor roller (21) to rotate. Through the cooperation of the other conveyor roller (21), the conveyor belt (22) drives the universal joint to move forward until the universal joint moves between the two universal joint fixing adjustment mechanisms (3). The universal joint is monitored by two sensors (44), and the stepper motor (24) stops working; S3: Four lateral electric push rods (51) push the two rectangular blocks (31) closer to each other, and the rectangular blocks (31) drive the corresponding two arc-shaped clamping plates (32) closer to the position of the universal shaft until the two arc-shaped clamping plates (32) move to the outside of the end of the universal shaft, and the two cylinders (322) push the corresponding two clamping rods (321) and the two arc-shaped clamping plates (32) closer to each other, so that the universal shaft can be clamped and fixed, and can adapt to the fixing of universal shafts of different sizes; S4: Two vertical electric push rods (52) push the rectangular block (31) upward through the support plate (5), and the rectangular block (31) drives the universal shaft to move upward through the two arc-shaped clamping plates (32). Since the universal shaft fixing and adjusting mechanism (3) is symmetrically arranged, the two ends of the universal shaft can be clamped and fixed and pushed upward, so that the universal shaft leaves the conveyor belt (22); S5: the intelligent pressure valve (431) works, the inert gas enters the plasma spray gun (45) through the gas delivery pipe (432) and the inert gas inlet pipe (452), and the gas pressure is automatically controlled. The particle delivery pump (422) works to deliver particles through the particle delivery pipe (432) and the particle inlet pipe (451) into the plasma spray gun (45). The particles are sprayed on the surface of the universal shaft under the action of the gas pressure of the inert gas to protect the metal surface. The reciprocating linear motor (46) drives the block (47) to perform reciprocating linear motion. The block (47) drives the plasma spray gun (45) to perform transverse reciprocating motion to uniformly spray plasma on the universal shaft. When the plasma spray gun (45) moves, it drives the particle inlet pipe (451) and the inert gas inlet pipe (452) to move in the two strip holes (411); S6: Two servo motors (34) drive two reciprocating screws (35) to rotate, and the two reciprocating screws (35) drive the column rod (36) to rotate through the cooperation of the ball slide rod (352) and the elongated ball slide groove (362). The column rod (36) drives the universal shaft to rotate 360 ​​degrees through the sealing plate (37), the fixing box (33), and the two arc-shaped clamping plates (32), so that the universal shaft can be fully sprayed with plasma. At the same time, since the arc plate (38) cooperates with the slider (381) and the slide groove (312) to ensure that the arc plate (38) and the sealing plate (37) rotate relative to each other through the annular groove (371), and the arc plate (38) does not rotate, the arc plate (38) can only rotate through the slider (381) and the slide groove (312). The reciprocating screw (35) is rotated so that the round rod (383) slides in the reciprocating screw groove (351) through the ball bearing (384), so that the round rod (383) is squeezed. The round rod (383) is fixedly connected to the arc plate (38), so that the arc plate (38) pushes the sealing plate (37) and the fixed box (33) to reciprocate back and forth, so that the fixed box (33) drives the universal shaft through the two arc clamping plates (32) to not only rotate but also bend continuously and change the angle, so that the joint position of the universal shaft can be sprayed with plasma, further improving the metal protection effect. After the plasma spraying of the universal shaft is completed, the fixation of the universal shaft is released, and the two universal shaft fixing adjustment mechanisms (3) are reset; S7: The conveyor belt (22) continues to convey the cardan shaft, and then it is discharged through the guide box (12).

Images