A kind of pipe plasma spraying equipment and its usage method

Abstract

The present invention relates to the technical field of surface treatment equipment, specifically to a pipe plasma spraying equipment and a method of using the equipment, comprising a fixed frame, one side of the fixed frame is rotatably connected to a pipe fixing assembly, a support platform is provided on the side of the pipe fixing assembly away from the fixed frame, a support cylinder is vertically fixed to the support platform, and a double-sided spraying assembly is connected to the support cylinder; the double-sided spraying assembly comprises a sliding column, a first connecting rod and a second connecting rod are fixed to the upper end of the sliding column; the first connecting rod and the second connecting rod are arranged at intervals along the sliding column; a first telescopic spraying component is fixed to the first connecting rod, and a second telescopic spraying component is connected to the second connecting rod; the first telescopic spraying component and the second telescopic spraying component are linked. The present invention realizes the simultaneous surface spraying treatment of the inner wall and the outer wall of the pipe through the setting of the double-sided spraying assembly, ensures uniform spraying of the pipe surface, and improves the overall production efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of surface treatment equipment, and particularly to a pipe plasma spraying equipment and a using method thereof. Background Art

[0002] Plasma spraying is a commonly used thermal spraying technology. It forms a coating by using plasma to spray materials onto the surface of a workpiece. Plasma spraying is widely used in many fields such as aerospace, automotive, electronics, metallurgy, and energy. It can be used to spray materials such as metals, ceramics, and concrete, and can improve the surface performance of materials, having high application value.

[0003] In the current technology, for the surface spraying treatment of pipes, often after the outer surface is completed, the inner surface is then processed. Although this treatment method can ensure a good coating effect on the pipe surface, its process flow has some obvious drawbacks. First, the spraying treatments on the outer and inner sides need to be carried out separately, which means that each surface needs to be processed individually. This not only increases the production processes but also significantly increases the operation time and labor intensity. Second, due to the two independent spraying processes, the work such as equipment switching, adjustment, and cleaning also consumes a large amount of time and resources, resulting in a decrease in the overall production efficiency.

[0004] Chinese Patent CN116200699B discloses an energy-saving ion spraying equipment and its processing method, including a spraying frame body, a bearing table, a first spraying component, and a second spraying component; the bearing table is arranged on the spraying frame body; the first spraying component is used for spraying the outer side of the bottle body; the second spraying component includes a moving frame body, an inner spraying pipeline, an inner spraying head, an inner coating supply part, and a sliding part; the moving frame body is slidably connected to the spraying frame body through the sliding part, and the inner coating supply part is connected to the moving frame body; one end of the inner spraying pipeline is connected to the inner coating supply part, and the other end can extend into the bottle body; the spraying head is arranged on the inner spraying pipeline; by supplying materials to the inner spraying pipeline through the inner coating supply part and simultaneously cooperating with the first spraying component to spray the outer side of the bottle body, the comprehensive spraying of the bottle body is realized, reducing the spraying process of the bottle body, and thus improving the spraying efficiency of the bottle body.

[0005] The above patent uses the first spraying component, the second spraying component, and the third spraying component to respectively realize the spraying of the outer side, the inner side, and the bottom of the bottle body, achieving the function of comprehensive spraying of the bottle body. Although the spraying efficiency is improved, it is completed by using multiple spraying components, and the equipment structure is relatively complex. Therefore, there is an urgent need for a device with a simple structure that can simultaneously realize the simultaneous spraying of the inner and outer surfaces. Summary of the Invention

[0006] In view of the deficiencies in the prior art, the purpose of the present invention is to propose a pipe plasma spraying equipment and a method of use. By setting a double-sided spraying component, the first airbag and the second airbag are repeatedly and alternately inflated and deflated, so that the inner wall and the outer wall of the pipe are simultaneously sprayed, ensuring uniform surface spraying of the pipe, avoiding an increase in production processes and waste of resources, and improving overall production efficiency; by setting a pipe fixing component, the device can perform surface treatment on pipes of different diameters, thereby increasing the practicality of the device.

[0007] In order to achieve the above object, the present invention provides the following technical solutions:

[0008] The present invention provides a pipe plasma spraying device, comprising a fixing frame, one side of the fixing frame is rotatably connected to a pipe fixing assembly, a support platform is provided on the side of the pipe fixing assembly away from the fixing frame, a support cylinder is vertically fixed on the support platform, and a double-sided spraying assembly is connected to the support cylinder;

[0009] The double-sided spray assembly includes a sliding column, the lower end of which is slidably inserted and connected in a supporting tube, and a first connecting rod and a second connecting rod are fixed to the upper end of the sliding column; the first connecting rod and the second connecting rod are arranged at intervals along the sliding column; a first telescopic spray component is fixed on the first connecting rod, and a second telescopic spray component is connected to the second connecting rod; the first telescopic spray component and the second telescopic spray component are linked.

[0010] Preferably, the first telescopic spraying component comprises a first circular plate and a second circular plate arranged in parallel on the left and right sides, the first circular plate is fixed on the first connecting rod; an electric telescopic rod is connected between the first circular plate and the second circular plate, a first airbag is also sealed and fixedly connected between the first circular plate and the second circular plate, and the electric telescopic rod is located inside the first airbag; a first spraying head is fixed on the side of the second circular plate away from the first circular plate;

[0011] The second telescopic spraying component comprises a third circular plate and a fourth circular plate arranged in parallel on the left and right sides, the third circular plate is fixed on the second connecting rod; a telescopic member is connected between the third circular plate and the fourth circular plate, a second airbag is also sealed and fixedly connected between the third circular plate and the fourth circular plate, and the telescopic member is located inside the second airbag; a second spraying head is fixed on the side of the fourth circular plate away from the third circular plate;

[0012] A ventilation pipe is connected between the first circular plate and the third circular plate. One end of the ventilation pipe is communicated with the first airbag, and the other end of the ventilation pipe is communicated with the second airbag. Connecting rings are fixed on the outer edges of the opposite sides of the first circular plate and the third circular plate, and a tension bar is threaded between the two connecting rings. The end of the tension bar on the side of the first circular plate is fixedly connected to the second circular plate, and the end of the tension bar on the side of the third circular plate is fixedly connected to the fourth circular plate.

[0013] Preferably, the pipe fixing assembly includes a fixing disk. One side of the fixing disk is provided with a rotating shaft, and the rotating shaft is rotatably connected to a fixing frame. A stepping motor is fixed on the fixing frame, and the output shaft of the stepping motor is fixedly connected to the rotating shaft. A threaded hole is opened in the middle of the other side of the fixing disk, and an abutting column is screwed on the threaded hole. A circular ring is coaxially fixed on the other side of the fixing disk, and a pipe clamping member is installed on the circular ring. The end of the abutting column outside the threaded hole abuts against the pipe clamping member.

[0014] Preferably, the pipe clamping member includes a central circular plate. A plurality of rotating rods are rotatably connected to the outer periphery of the central circular plate in a circumferential distribution. One end of the rotating rod away from the central circular plate is rotatably connected to a sliding rod. A plurality of through holes corresponding to the sliding rods are opened on the circular ring, and a plurality of limiting cylinders are fixed on the inner side wall of the circular ring. The positions of the limiting cylinders correspond to those of the through holes one by one. A plurality of sliding rods are all inserted into the corresponding limiting cylinders and the ends extend out of the outside of the through holes. The central circular plate and the sliding rods are arranged parallel to each other left and right, and the central circular plate is located on the left side of the sliding rods. The included angle between the sliding rod and the rotating rod is β, and β < 180°.

[0015] Preferably, an operation groove is opened on the circular ring between the two limiting cylinders. The operation groove is arranged on the side close to the fixing disk, and the limiting cylinder is arranged on the side far from the fixing disk.

[0016] Preferably, a plurality of limiting holes are axially opened on the support cylinder, and a plurality of circular grooves corresponding to the limiting holes are opened at the lower end of the sliding column. The limiting holes and the circular grooves are connected in a limiting manner through pins.

[0017] Preferably, a Y-shaped support frame is detachably installed on the support platform, and strip-shaped protrusions are arranged in the top groove of the Y-shaped support frame.

[0018] Preferably, a spraying supply part is further installed on the support platform. The first spraying head and the second spraying head are respectively communicated with the spraying supply part through supply hoses.

[0019] Preferably, the telescopic member includes multiple rods that are successively and continuously sleeved. One end of the rod at the rightmost end of the telescopic member is fixedly connected to the third circular plate, and one end of the rod at the leftmost end of the telescopic member is fixedly connected to the fourth circular plate; limiting rings are provided at the left ends of the rods, and limiting circles are provided at the right ends of the rods.

[0020] The present invention also provides a method for using a pipe plasma spraying device, which includes the following steps:

[0021] S1: Fasten one end of the pipe to the outside of the ring. Use a tool to rotate the abutting column. The rotation of the abutting column pushes the central circular plate outward from the ring, so that the rotating rod drives the sliding rod to slide outward from the ring. One end of the sliding rod located outside the ring clamps the pipe to achieve the fixation of the pipe.

[0022] S2: Adjust the height of the sliding column. After adjusting until the first telescopic spraying component is located above the pipe and the second telescopic spraying component is located inside the pipe, insert a pin between the limiting hole and the circular groove for height positioning.

[0023] S3: Drive the stepping motor, and the stepping motor drives the pipe to rotate; drive the electric telescopic rod to expand and contract. At the same time, turn on the first spraying head, the second spraying head and the spraying supply part. The expansion and contraction process of the electric telescopic rod realizes the simultaneous spraying treatment of the inner and outer wall surfaces of the pipe.

[0024] When the electric telescopic rod contracts, the second circular plate squeezes the first airbag, and the gas in the first airbag is input into the second airbag through the air pipe. The second airbag is filled with gas, which drives the telescopic member to expand, and at the same time drives the pulling bar to pull, so that the length of the pulling bar on one side of the second airbag is consistent with the expansion length of the telescopic member, and the pulling bar on one side of the first airbag is consistent with the length of the contracted electric telescopic rod.

[0025] When the electric telescopic rod expands, the second circular plate pulls the first airbag, and the gas in the second airbag is input into the first airbag through the air pipe. The first airbag is filled with gas. At the same time, when the electric telescopic rod expands, it drives the pulling bar to pull, so that the length of the pulling bar on one side of the first airbag is consistent with the expansion length of the electric telescopic rod. The pulling bar on one side of the second airbag drives the telescopic member to retract. After the retraction is completed, the pulling bar on one side of the second airbag is consistent with the length of the contracted telescopic member.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] (1) The present invention is provided with a double-sided spraying assembly. Through the expansion and contraction of the electric telescopic rod, the first airbag and the second airbag are driven to perform repeated deflation and inflation. When the first airbag is inflated, the second airbag is deflated, and the telescopic member contracts under the drive of the pulling bar, and the second airbag contracts; when the first airbag is deflated, the second airbag is inflated, and the telescopic member drives the telescopic member to elongate in the inflated state of the second airbag, and the first airbag contracts; during the process of the airbags alternately inflating and deflating, the first spraying head and the second spraying head spray back and forth, realizing the simultaneous surface spraying treatment of the inner wall and the outer wall of the pipe. With the gradual rotation of the pipe fixing assembly, the spraying on the pipe surface is ensured to be uniform. At the same time, the increase of production processes and the waste of resources are avoided, and the overall production efficiency is improved.

[0028] (2) The present invention is provided with a pipe fixing assembly that can clamp pipes with different pipe diameters. At the same time, the cooperation of the fixed rod and the sliding rod can adjust the heights of the first spraying telescopic member and the second spraying telescopic member, achieving the spraying distance cooperation for pipes with different pipe diameters, realizing the surface treatment of pipes with different pipe diameters by the device, and increasing the practicability of the device. Description of the Drawings

[0029] Figure 1 is the overall structural schematic diagram of a pipe plasma spraying device of the present invention;

[0030] Figure 2 is the exploded overall structural schematic diagram of a pipe plasma spraying device of the present invention;

[0031] Figure 3 is the present invention Figure 2 enlarged structural schematic diagram of part A;

[0032] Figure 4 is the exploded structural schematic diagram of the pipe fixing assembly of a pipe plasma spraying device of the present invention;

[0033] Figure 5 is the sectional structural schematic diagram of the pipe fixing assembly of a pipe plasma spraying device of the present invention;

[0034] Figure 6 is the structural schematic diagram of the telescopic member of a pipe plasma spraying device of the present invention;

[0035] Figure 7 is the partial sectional structural schematic diagram of the connection between the telescopic rod of the telescopic member of a pipe plasma spraying device of the present invention.

[0036] In the figure: 100, fixed frame; 200, pipe fixing assembly; 300, support platform; 400, double-sided spray assembly; 110, stepping motor; 210, fixed plate; 220, rotating shaft; 230, abutment column; 240, ring; 250, pipe clamp; 241, through hole; 242, limit cylinder; 243, operation groove; 251, center circular plate; 252, rotating rod; 253, sliding rod; 310, support cylinder; 320, Y-type support frame; 330, spray supply unit; 340, hose; 311, limit hole; 312, latch; 321, strip convex 410, sliding column; 420, first connecting rod; 430, second connecting rod; 440, first telescopic spraying part; 450, second telescopic spraying part; 460, vent pipe; 470, connecting ring; 480, pull rod; 441, first circular plate; 442, electric telescopic rod; 443, second circular plate; 444, first airbag; 445, first spraying head; 451, third circular plate; 452, telescopic part; 453, fourth circular plate; 454, second airbag; 455, second spraying head; 4521, rod; 4522, limit ring; 4523, limit circle. DETAILED DESCRIPTION

[0037] The preferred embodiments of the present invention are described below in conjunction with the drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention. In addition, the embodiments of the present invention and the features in the embodiments may be combined with each other if there is no conflict. Example 1

[0038] like Figures 1 to 7 As shown, a pipe plasma spraying device includes a fixing frame 100, one side of the fixing frame 100 is rotatably connected to a pipe fixing assembly 200, a support platform 300 is provided on the side of the pipe fixing assembly 200 away from the fixing frame 100, a support cylinder 310 is vertically fixed on the support platform 300, and a double-sided spraying assembly 400 is connected to the support cylinder 310;

[0039] The double-sided spray assembly 400 includes a sliding column 410, the lower end of which is slidably inserted and connected in the support tube 310, and the upper end of the sliding column 410 is fixed with a first connecting rod 420 and a second connecting rod 430; the first connecting rod 420 and the second connecting rod 430 are arranged at intervals along the sliding column 410; a first telescopic spray component 440 is fixed on the first connecting rod 420, and a second telescopic spray component 450 is connected to the second connecting rod 430; the first telescopic spray component 440 and the second telescopic spray component 450 are linked.

[0040] The fixing bracket 100 is used to install the pipe fixing component 200, and the pipe fixing component 200 is used to fix the pipe and rotate the pipe to facilitate the surface treatment by the double-sided spraying component 400; the support table 300 is used to support the double-sided spraying component 400, and the double-sided spraying component 400 is used to perform surface spraying treatment on the pipe.

[0041] The support cylinder 310 vertically supports the sliding column 410. The first connecting rod 420 arranged on the sliding column 410 is used to fix the first telescopic spraying part 440, and the second connecting rod 430 is used to fix the second telescopic spraying part 450. Through the linkage setting between the first telescopic spraying part 440 and the second telescopic spraying part 450, the inner and outer side walls of the pipe are simultaneously surface-treated.

[0042] In this embodiment, the first telescopic spraying part 440 includes a first circular plate 441 and a second circular plate 443 arranged parallel to each other left and right. The first circular plate 441 is fixed on the first connecting rod 420; an electric telescopic rod 442 is connected between the first circular plate 441 and the second circular plate 443. A first airbag 444 is also hermetically and fixedly connected between the first circular plate 441 and the second circular plate 443. The electric telescopic rod 442 is located inside the first airbag 444; a first spraying head 445 is fixed on the side of the second circular plate 443 away from the first circular plate 441.

[0043] The second telescopic spraying part 450 includes a third circular plate 451 and a fourth circular plate 453 arranged parallel to each other left and right. The third circular plate 451 is fixed on the second connecting rod 430; a telescopic member 452 is connected between the third circular plate 451 and the fourth circular plate 453. A second airbag 454 is also hermetically and fixedly connected between the third circular plate 451 and the fourth circular plate 453. The telescopic member 452 is located inside the second airbag 454; a second spraying head 455 is fixed on the side of the fourth circular plate 453 away from the third circular plate 451.

[0044] An air pipe 460 is connected between the first circular plate 441 and the third circular plate 451. One end of the air pipe 460 is communicated with the first airbag 444, and the other end of the air pipe 460 is communicated with the second airbag 454; connecting rings 470 are fixed on the outer edges of the opposite sides of the first circular plate 441 and the third circular plate 451, and a pull bar 480 is arranged through the two connecting rings 470; the end of the pull bar 480 on the side of the first circular plate 441 is fixedly connected to the second circular plate 443, and the end of the pull bar 480 on the side of the third circular plate 451 is fixedly connected to the fourth circular plate 453.

[0045] During surface spraying treatment, when the electric telescopic rod 442 contracts, it drives the second circular plate 443 to squeeze the first airbag 444. At this time, the first spray head 445 sprays from one end of the pipe fixing component 200 to the other end; when the gas in the first airbag 444 is squeezed, it flows through the ventilation pipe 460 into the second airbag 454, and the second airbag 454 is inflated. When inflated, the second airbag 454 drives the fourth circular plate 453 to approach one end of the pipe fixing component 200. The telescopic member 452 and the pulling bar 480 are pulled by the fourth circular plate 453, and the telescopic member 452 extends, realizing that the second spray head 455 fixed on the fourth circular plate 453 sprays towards one end close to the pipe fixing component 200.

[0046] When the electric telescopic rod 442 extends, it drives the second circular plate 443 to approach one side of the pipe fixing component 200, the first airbag 444 is pulled open, and the gas flows from the second airbag 454 into the first airbag 444. At the same time, when the second circular plate 443 approaches one side of the pipe fixing component 200, the pulling bar 480 is pulled, driving the telescopic member 452 to contract, and cooperating to squeeze the gas in the second airbag 454 into the first airbag 444. At this time, the first spray head 445 and the second spray head 455 realize spraying in the direction opposite to that when the electric telescopic rod 442 contracts. Thus, the extension and contraction of the electric telescopic rod 442 realize the simultaneous spraying of the inner and outer surfaces of the pipe, reducing the spraying process, and having a simple structure and improving the spraying efficiency.

[0047] It should be noted that in order to make the surface treatment uniform, the spray head outlet arc, spray head size, and spraying amount of the first spray head 445 and the second spray head 455 can be selected according to the actual situation, and the rotation speed and rotation angle of the stepping motor 110 can also be adjusted according to the specific situation, which will not be elaborated here.

[0048] Furthermore, when the device only needs to perform inner wall surface treatment or outer wall surface treatment, it can be achieved by closing the spray heads that do not need to spray, realizing the spraying requirement function for different surfaces and having a wider range of use.

[0049] In this embodiment, the pipe fixing component 200 includes a fixing disk 210. One side of the fixing disk 210 is provided with a rotating shaft 220, and the rotating shaft 220 is rotatably connected to the fixing frame 100; a stepping motor 110 is fixed on the fixing frame 100, and the output shaft of the stepping motor 110 is fixedly connected to the rotating shaft 220; a threaded hole is opened in the middle of the other side of the fixing disk 210, and a contact column 230 is screwed on the threaded hole; a circular ring 240 is coaxially fixed on the other side of the fixing disk 210, and a pipe clamping member 250 is installed on the circular ring 240, and the end of the contact column 230 outside the threaded hole abuts against the pipe clamping member 250.

[0050] In this embodiment, the pipe clamping member 250 includes a central circular plate 251. A plurality of rotating rods 252 are rotatably connected to the outer periphery of the central circular plate 251 at equal intervals. One end of the rotating rod 252 away from the central circular plate 251 is rotatably connected to a sliding rod 253. A plurality of through holes 241 corresponding to the sliding rods 253 are formed in the ring 240. A plurality of limiting cylinders 242 are fixed to the inner side wall of the ring 240, and the positions of the limiting cylinders 242 correspond to those of the through holes 241 one by one. A plurality of the sliding rods 253 are all inserted into the corresponding limiting cylinders 242 and the ends extend out of the outer sides of the through holes 241. The central circular plate 251 and the sliding rods 253 are arranged parallel to each other left and right, and the central circular plate 251 is located on the left side of the sliding rods 253. The included angle between the sliding rod 253 and the rotating rod 252 is β, and β < 180°.

[0051] When fixing the pipe, one end of the pipe is sleeved on the outer side of the ring 240. To fix the pipe, by twisting the abutting column 230, the abutting column 230 rotates and extends outwards towards the outer side of the fixed disk 210. When extending out, the abutting column 230 pushes the central circular plate 251 towards the outer side of the ring 240. At this time, the rotating rod 252 rotatably connected to the central circular plate 251, due to the outward movement of the central circular plate 251, squeezes the sliding rod 253 towards the outer side of the ring 240, so that the sliding rod 253 extends out towards the outer side of the ring 240, clamping and fixing the inner wall of one end of the pipe in all directions, realizing clamping and fixing. The pipe fixing assembly 200 can be applicable to fixing pipes with different diameters and realize the surface treatment function of pipes with different diameters.

[0052] In this embodiment, an operation groove 243 is formed in the ring 240 between two limiting cylinders 242. The operation groove 243 is arranged on the side close to the fixed disk 210, and the limiting cylinders 242 are arranged on the side far from the fixed disk 210.

[0053] The operation groove 243 facilitates using a tool to twist the abutting column 230. The tool can be a wrench. It should be noted that after one end of the pipe is buckled on the outer side of the ring 240, it will not interfere with the tool extending into the operation groove 243 to twist the abutting column 230.

[0054] In this embodiment, a plurality of limiting holes 311 are axially formed in the support cylinder 310. A plurality of circular grooves corresponding to the limiting holes 311 are formed at the lower end of the sliding column 410. The limiting holes 311 and the circular grooves are limited and connected by pins 312.

[0055] The arrangement of the limiting holes 311 and the circular grooves facilitates the insertion of the pins 312, realizing the function of adjusting the heights of the first telescopic spraying member 440 and the second telescopic spraying member 450 and adapting to the spraying of pipes with different diameters.

[0056] In this embodiment, a Y-shaped support frame 320 is detachably installed on the support table 300, and a strip-shaped protrusion 321 is provided in the top groove of the Y-shaped support frame 320.

[0057] When spraying relatively heavy pipes, the un-fixed end of the pipe can be supported by the Y-shaped support frame 320. The strip-shaped protrusion 321 can reduce the contact area with the pipe and reduce the damage to the surface coating.

[0058] In this embodiment, a spraying supply part 330 is further installed on the support table 300. The first spraying head 445 and the second spraying head 455 are respectively communicated with the spraying supply part 330 through supply hoses 340.

[0059] The spraying supply part 330 provides the materials for surface spraying treatment. It should be noted that when the first spraying head 445 and the second spraying head 455 perform back-and-forth spraying, the hose 340 can avoid surface contact with the pipe through conventional fixing treatment.

[0060] In this embodiment, the telescopic member 452 includes a plurality of rods 4521 that are successively and continuously sleeved. One end of the rod 4521 at the rightmost end of the telescopic member 452 is fixedly connected to the third circular plate 451, and one end of the rod 4521 at the leftmost end of the telescopic member 452 is fixedly connected to the fourth circular plate 453; limiting rings 4522 are provided at the left ends of the rods 4521, and limiting rings 4523 are provided at the right ends of the rods 4521.

[0061] The limiting rings 4522 and the limiting rings 4523 are used to limit the adjacent and interconnected rods 4521. At the same time, the plurality of rods 4521 that are successively and continuously sleeved are slidably connected. Under the action of an external force, they can slide freely to realize the back-and-forth spraying function of the second spraying head 455. Embodiment 2

[0062] A method for using a pipe plasma spraying device includes the following steps:

[0063] S1: Buckle one end of the pipe outside the ring 240, and use a tool to rotate the abutting column 230. The rotation of the abutting column 230 pushes the central circular plate 251 outward from the ring 240, so that the rotating rod 252 drives the sliding rod 253 to slide outward from the ring 240. One end of the sliding rod 253 located outside the ring 240 clamps the pipe to realize the fixation of the pipe.

[0064] S2: Adjust the height of the sliding column 410. After adjusting until the first telescopic spraying component 440 is located above the pipe and the second telescopic spraying component 450 is located inside the pipe, insert the pin 312 between the limiting hole 311 and the circular groove for height positioning.

[0065] S3: driving the stepper motor 110, the stepper motor 110 drives the pipe to rotate; driving the electric telescopic rod 442 to extend and retract, and at the same time, opening the first spray head 445, the second spray head 455 and the spray supply part 330, the extension and retraction process of the electric telescopic rod 442 realizes the simultaneous spraying treatment of the inner and outer wall surfaces of the pipe;

[0066] When the electric telescopic rod 442 is retracted, the second circular plate 443 squeezes the first airbag 444, and the gas in the first airbag 444 is input into the second airbag 454 through the vent pipe 460. The second airbag 454 is filled with gas, which drives the telescopic member 452 to extend, and at the same time drives the pull rod 480 to pull, so that the length of the pull rod 480 on one side of the second airbag 454 is consistent with the extended length of the telescopic member 452, and the length of the pull rod 480 on one side of the first airbag 444 is consistent with the length of the retracted electric telescopic rod 442;

[0067] When the electric telescopic rod 442 is extended, the second circular plate 443 pulls open the first airbag 444, and the gas in the second airbag 454 is input into the first airbag 444 through the ventilation pipe 460, and the first airbag 444 is filled with gas. At the same time, when the electric telescopic rod 442 is extended, it drives the pull strip 480 to be pulled, so that the length of the pull strip 480 on one side of the first airbag 444 is consistent with the extended length of the electric telescopic rod 442, and the pull strip 480 on one side of the second airbag 454 drives the telescopic part 452 to be retracted. After tightening is completed, the pull strip 480 on one side of the second airbag 454 is consistent with the length of the retracted telescopic part 452.

[0068] Although the present invention has been disclosed as above by embodiments, it is not intended to limit the present invention. Any technician familiar with the profession can make some changes or modifications to equivalent embodiments of equivalent changes using the technical contents disclosed above without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the scope of the technical solution of the present invention.

Claims

1. A pipe plasma spraying device, comprising a fixing frame (100), characterized in that: A pipe fixing assembly (200) is rotatably connected to one side of the fixing frame (100), a support platform (300) is provided on the side of the pipe fixing assembly (200) away from the fixing frame (100), a support cylinder (310) is vertically fixed on the support platform (300), and a double-sided spraying assembly (400) is connected to the support cylinder (310); The double-sided spraying assembly (400) comprises a sliding column (410), the lower end of the sliding column (410) is slidably inserted and connected in the support tube (310), and the upper end of the sliding column (410) is fixed with a first connecting rod (420) and a second connecting rod (430); the first connecting rod (420) and the second connecting rod (430) are arranged at intervals up and down along the sliding column (410); a first telescopic spraying component (440) is fixed on the first connecting rod (420), and a second telescopic spraying component (450) is connected to the second connecting rod (430); the first telescopic spraying component (440) and the second telescopic spraying component (450) are arranged in linkage; The first telescopic spraying component (440) comprises a first circular plate (441) and a second circular plate (443) which are arranged in parallel on the left and right sides, wherein the first circular plate (441) is fixed on the first connecting rod (420); an electric telescopic rod (442) is connected between the first circular plate (441) and the second circular plate (443); a first airbag (444) is also sealed and fixedly connected between the first circular plate (441) and the second circular plate (443), and the electric telescopic rod (442) is located inside the first airbag (444); a first spraying head (445) is fixed on the side of the second circular plate (443) away from the first circular plate (441); The second telescopic spraying component (450) comprises a third circular plate (451) and a fourth circular plate (453) which are arranged in parallel on the left and right sides, wherein the third circular plate (451) is fixed on the second connecting rod (430); a telescopic member (452) is connected between the third circular plate (451) and the fourth circular plate (453); a second airbag (454) is also sealed and fixedly connected between the third circular plate (451) and the fourth circular plate (453), and the telescopic member (452) is located inside the second airbag (454); a second spraying head (455) is fixed on the side of the fourth circular plate (453) away from the third circular plate (451); A ventilation pipe (460) is connected between the first circular plate (441) and the third circular plate (451), one end of the ventilation pipe (460) is connected to the first airbag (444), and the other end of the ventilation pipe (460) is connected to the second airbag (454); connecting rings (470) are fixed on the outer edges of the opposite sides of the first circular plate (441) and the third circular plate (451), and a pull rod (480) is passed between the two connecting rings (470); the end of the pull rod (480) located on the side of the first circular plate (441) is fixedly connected to the second circular plate (443), and the end of the pull rod (480) located on the side of the third circular plate (451) is fixedly connected to the fourth circular plate (453).

2. The pipe plasma spraying equipment according to claim 1, characterized in that: The pipe fixing assembly (200) comprises a fixing plate (210), one side of which is provided with a rotating shaft (220), and the rotating shaft (220) is rotatably connected to a fixing frame (100); a stepping motor (110) is fixed to the fixing frame (100), and the output shaft of the stepping motor (110) is fixedly connected to the rotating shaft (220); a threaded hole is provided in the middle of the other side of the fixing plate (210), and an abutting column (230) is screwed on the threaded hole; a circular ring (240) is coaxially fixed on the other side of the fixing plate (210), and a pipe clamping piece (250) is installed on the circular ring (240), and one end of the abutting column (230) located outside the threaded hole abuts against the pipe clamping piece (250).

3. The pipe plasma spraying equipment according to claim 2, characterized in that: The pipe clamp (250) comprises a central circular plate (251), the outer circumference of which is evenly distributed with a plurality of rotating rods (252) rotatably connected, and one end of the rotating rod (252) away from the central circular plate (251) is rotatably connected with a sliding rod (253); the circular ring (240) is provided with a plurality of through holes (241) corresponding to the sliding rods (253), and the inner side wall of the circular ring (240) is fixed with a plurality of limiting cylinders (242). The positions of the limiting cylinder (242) and the through hole (241) correspond one to one; the plurality of sliding rods (253) are all inserted into the corresponding limiting cylinder (242) and the ends thereof extend out of the outside of the through hole (241); the central circular plate (251) and the sliding rod (253) are arranged in parallel on the left and right sides, and the central circular plate (251) is located on the left side of the sliding rod (253); the angle between the sliding rod (253) and the rotating rod (252) is β, and β is less than 180°.

4. The pipe plasma spraying equipment according to claim 3, characterized in that: An operating groove (243) is provided on the circular ring (240) between the two limiting cylinders (242). The operating groove (243) is arranged on a side close to the fixed disk (210), and the limiting cylinder (242) is arranged on a side away from the fixed disk (210).

5. The pipe plasma spraying equipment according to claim 1, characterized in that: The support tube (310) is axially provided with a plurality of limiting holes (311), the lower end of the sliding column (410) is provided with a plurality of circular grooves corresponding to the limiting holes (311), and the limiting holes (311) and the circular grooves are connected in a limiting manner via a latch (312).

6. The pipe plasma spraying equipment according to claim 1, characterized in that: A Y-shaped support frame (320) is detachably mounted on the support platform (300), and a strip-shaped protrusion (321) is provided in a top groove of the Y-shaped support frame (320).

7. The pipe plasma spraying equipment according to claim 1, characterized in that: A spray supply unit (330) is also installed on the support platform (300), and the first spray head (445) and the second spray head (455) are connected to the spray supply unit (330) through supply hoses (340) respectively.

8. The pipe plasma spraying equipment according to claim 1, characterized in that: The telescopic member (452) comprises a plurality of rods (4521) which are continuously sleeved in sequence. One end of the rod (4521) at the rightmost end of the telescopic member (452) is fixedly connected to the third circular plate (451), and one end of the rod (4521) at the leftmost end of the telescopic member (452) is fixedly connected to the fourth circular plate (453). A limiting ring (4522) is provided at the left end of each rod (4521), and a limiting ring (4523) is provided at the right end of each rod (4521).

9. A method for using the pipe plasma spraying equipment according to any one of claims 1 to 8, characterized in that: The steps include: S1: buckle one end of the pipe to the outside of the circular ring (240), use a tool to rotate the abutment column (230) through the operating groove (243), and the abutment column (230) rotates to push the central circular plate (251) toward the outside of the circular ring (240), so that the rotating rod (252) drives the sliding rod (253) to slide toward the outside of the circular ring (240), and the end of the sliding rod (253) located outside the circular ring (240) clamps the pipe, thereby fixing the pipe; S2: Adjust the height of the sliding column (410) until the first telescopic spraying component (440) is located above the pipe and the second telescopic spraying component (450) is located inside the pipe, and then insert the latch (312) between the limiting hole (311) and the circular groove for height positioning; S3: driving the stepper motor (110), the stepper motor (110) drives the pipe to rotate; driving the electric telescopic rod (442) to extend and retract, and at the same time, opening the first spray head (445), the second spray head (455) and the spray supply part (330), the extension and retraction process of the electric telescopic rod (442) realizes the simultaneous spraying treatment of the inner and outer wall surfaces of the pipe; When the electric telescopic rod (442) is retracted, the second circular plate (443) squeezes the first airbag (444), and the gas in the first airbag (444) is input into the second airbag (454) through the vent pipe (460). The second airbag (454) is filled with gas, which drives the telescopic member (452) to extend, and at the same time drives the pull rod (480) to be pulled, so that the length of the pull rod (480) on one side of the second airbag (454) is consistent with the extended length of the telescopic member (452), and the pull rod (480) on one side of the first airbag (444) is consistent with the length of the retracted electric telescopic rod (442); When the electric telescopic rod (442) is extended, the second circular plate (443) opens the first airbag (444), and the gas in the second airbag (454) is input into the first airbag (444) through the ventilation pipe (460), and the first airbag (444) is filled with gas. At the same time, when the electric telescopic rod (442) is extended, it drives the pull strip (480) to be pulled, so that the length of the pull strip (480) on one side of the first airbag (444) is consistent with the extended length of the electric telescopic rod (442), and the pull strip (480) on one side of the second airbag (454) drives the telescopic member (452) to be retracted. After the tightening is completed, the pull strip (480) on one side of the second airbag (454) is consistent with the length of the retracted telescopic member (452).

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