阅读说明：本技术 空气动力冷喷涂工作单元 (Aerodynamic cold spraying working unit ) 是由 李羿含 高植强 李星彤 王亮 徐建 于 2020-12-02 设计创作，主要内容包括：本发明涉及空气动力冷喷涂工作单元,包括封闭式的喷涂室和超音速冷喷涂装置；喷涂室的内部设置有发电机和用于收集喷涂室内的粉尘的集尘装置,外部设置有控制室；喷涂室包括第一半腔体和第二半腔体；第一半腔体包括两个第一侧壁、前壁以及第一顶盖；第二半腔体包括两个第二侧壁、后壁以及第二顶盖；第一侧壁与第二侧壁滑动连接。本发明通过设置滑动连接的第一半腔体和第二半腔体,将喷涂室设计为抽拉式结构,实现根据待喷涂工件的大小调节喷涂室的体积,从而有效解决待喷涂工件的大小受喷涂室体积限制的问题；通过将喷涂室设计为封闭式结构,并采用集尘装置回收喷涂过程中产生的粉尘,从而有效避免造成环境污染。(The invention relates to an aerodynamic cold spraying working unit, which comprises a closed spraying chamber and a supersonic cold spraying device; the interior of the spraying chamber is provided with a generator and a dust collecting device for collecting dust in the spraying chamber, and the exterior is provided with a control chamber; the spraying chamber comprises a first half cavity and a second half cavity; the first cavity half comprises two first side walls, a front wall and a first top cover; the second half cavity comprises two second side walls, a rear wall and a second top cover; the first side wall is connected with the second side wall in a sliding mode. According to the invention, the first half cavity and the second half cavity which are connected in a sliding manner are arranged, and the spraying chamber is designed into a drawing structure, so that the volume of the spraying chamber can be adjusted according to the size of a workpiece to be sprayed, and the problem that the size of the workpiece to be sprayed is limited by the volume of the spraying chamber is effectively solved; the spraying chamber is designed to be a closed structure, and dust generated in the spraying process is recycled by adopting the dust collecting device, so that the environmental pollution is effectively avoided.)

1. The aerodynamic cold spraying working unit comprises a closed spraying chamber (1) and a supersonic cold spraying device (6), and is characterized in that a generator (7) and a dust collecting device (8) for collecting dust in the spraying chamber (1) are arranged in the spraying chamber (1), and a control chamber (5) is arranged outside the spraying chamber (1); the spraying chamber (1) comprises a first half cavity (11) and a second half cavity (12); the first half-cavity (11) comprises two first side walls (111), a front wall (112) and a first top cover; the second half-cavity (12) comprises two second side walls (121), a rear wall (122) and a second top cover; the first side wall (111) is connected with the second side wall (121) in a sliding mode.

2. The aerodynamic cold spray working unit according to claim 1, wherein a sliding rail (113) is fixedly mounted on the first side wall (111); a sliding block is fixedly arranged on the second side wall (121); the sliding block is in sliding fit with the sliding rail (113).

3. The aerodynamic cold spray working unit of claim 1, wherein the first header is slidably connected to the second header.

4. Aerodynamic cold spray working unit according to claim 1, wherein a sliding door (123) is provided on the rear wall (122).

5. The aerodynamic cold spray working unit according to claim 1, wherein sound absorbing tissue paper is attached to the first side wall (111), the front wall (112), the first top cover, the second side wall (121), the rear wall (122) and the second top cover.

6. The aerodynamic cold spray working unit according to claim 1, characterized in that the supersonic cold spray device (6) comprises an air compressor (61) arranged outside the spray booth (1), and an air reservoir (62), a powder feeder and a spray gun arranged inside the spray booth (1).

7. The aerodynamic cold spray working unit according to claim 6, wherein an outlet of the air reservoir (62) is fitted with a solenoid control valve.

8. The aerodynamic cold spray working unit according to claim 6, wherein a suspension arm (4), a lifting device (2) for controlling the lifting of the suspension arm (4), and a machine arm (41) movable laterally along the suspension arm (4) are provided in the spray booth (1); the lance is mounted on a robot arm (41).

9. The aerodynamic cold spray working unit according to claim 8, wherein the lifting device (2) comprises a longitudinal beam, and a lead screw and a first motor mounted on the longitudinal beam; the screw rod is connected with the first motor through a connecting jig; a screw rod nut is connected to the screw rod through threads; one end of the suspension arm (4) is connected with the screw rod nut.

10. Aerodynamic cold spray working unit according to claim 9, wherein the suspension arm (4) is rotationally connected with a feed screw nut by a rotation device (3); the rotating device (3) comprises a slewing bearing arranged on a screw rod nut, a second motor and a speed reducer which are fixedly arranged on the suspension arm (4); an output shaft of the speed reducer is fixedly connected with a gear; the gear is meshed with the internal teeth of the slewing bearing.

Technical Field

The invention belongs to the technical field of cold spraying, and particularly relates to an aerodynamic cold spraying working unit.

Background

Cold spraying is a surface spraying process in which the metal particles are not melted throughout the process. Namely, the process of accelerating metal particles to critical speed (supersonic speed) by using compressed air or other gases at lower temperature (< 1000 ℃) so as to enable the metal particles to impact a substrate at high speed (300-1200m/s) in a complete solid state, and realizing material deposition by violent deformation at the interface of the particles and the substrate. The lower gas temperature avoids thermal effects of the powder such as oxidation, phase changes, grain growth, etc. in conventional thermal spray processes. At the same time, the higher particle velocity contributes to sufficient plastic deformation of the particles during deposition to obtain a tissue-dense deposit. These characteristics generally provide cold spray coatings with excellent properties of high electrical conductivity, high thermal conductivity, high corrosion resistance, high wear resistance, and the like. In addition, the low deposition temperature makes the cold spraying become an effective method for preparing heat-sensitive materials such as nanocrystalline metal materials, nano composite materials, metal glass and the like, and oxidation-sensitive materials such as Ti, Cu and alloys thereof and the like, and can avoid defects caused by other processes.

The existing cold spraying working unit generally has the problems of inflexible construction, easy generation of environmental pollution, high working noise, limitation of the size of a workpiece to be sprayed by the volume of a spraying chamber and the like.

Disclosure of Invention

The invention provides an aerodynamic cold spraying working unit aiming at the technical problems in the prior art, and solves at least one of the problems that the existing cold spraying working unit is inflexible in construction, easy to generate environmental pollution, high in working noise, limited in size of a workpiece to be sprayed by the volume of a spraying chamber and the like.

The technical scheme for solving the technical problems is as follows:

the air power cold spraying working unit comprises a closed spraying chamber and a supersonic speed cold spraying device, wherein a generator and a dust collecting device for collecting dust in the spraying chamber are arranged in the spraying chamber, and a control chamber is arranged outside the spraying chamber; the spraying chamber comprises a first half cavity and a second half cavity; the first cavity half comprises two first side walls, a front wall and a first top cover; the second half cavity comprises two second side walls, a rear wall and a second top cover; the first side wall is connected with the second side wall in a sliding mode.

On the basis of the technical scheme, the invention can be further improved as follows.

Further, a slide rail is fixedly mounted on the first side wall; a sliding block is fixedly arranged on the second side wall; the sliding block is in sliding fit with the sliding rail.

Further, the first top cover is connected with the second top cover in a sliding mode.

Further, a sliding door is arranged on the rear wall.

Furthermore, all paste on first lateral wall, antetheca, first top cap, second lateral wall, back wall and the second top cap and have inhaled sound cotton paper.

Further, the supersonic cold spraying device comprises an air compressor arranged outside the spraying chamber, and an air storage tank, a powder feeder and a spray gun which are arranged inside the spraying chamber.

Further, an outlet of the air storage tank is provided with an electromagnetic control valve.

Further, a suspension arm, a lifting device for controlling the suspension arm to lift and a machine arm capable of moving transversely along the suspension arm are arranged in the spraying chamber; the spray gun is mounted on a robot arm.

Further, the lifting device comprises a longitudinal beam, a screw rod and a first motor, wherein the screw rod and the first motor are installed on the longitudinal beam; the screw rod is connected with the first motor through a connecting jig; a screw rod nut is connected to the screw rod through threads; one end of the suspension arm is connected with the lead screw nut.

Further, the suspension arm is rotationally connected with the feed screw nut through a rotating device; the rotating device comprises a slewing bearing arranged on the lead screw nut, a second motor and a speed reducer which are fixedly arranged on the suspension arm; an output shaft of the speed reducer is fixedly connected with a gear; the gear is meshed with the internal teeth of the slewing bearing.

The invention has the beneficial effects that:

(1) according to the invention, the first half cavity and the second half cavity which are connected in a sliding manner are arranged, and the spraying chamber is designed into a drawing structure, so that the volume of the spraying chamber can be adjusted according to the size of a workpiece to be sprayed, and the problem that the size of the workpiece to be sprayed is limited by the volume of the spraying chamber is effectively solved;

(2) the spraying chamber is designed to be a closed structure, and the dust collecting device is adopted to recover dust generated in the spraying process, so that the environmental pollution is effectively avoided;

(3) the sound-absorbing cotton paper is arranged to absorb and isolate noise generated in the spraying process, so that the problem that the existing cold spraying working unit has large working noise is effectively solved;

(4) the invention enables the machine arm and the spray gun to move in a three-dimensional space according to the working requirement by arranging the lifting device, the rotating device, the suspension arm and other members, thereby obviously improving the flexibility and the quality of spraying, and effectively solving the problem of inflexible construction of the traditional cold spraying working unit.

Drawings

FIG. 1 is a schematic top view of the present invention;

fig. 2 is a schematic top view of the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

1. the ultrasonic spraying device comprises a spraying chamber, 11, a first half cavity, 111, a first side wall, 112, a front wall, 113, a sliding rail, 12, a second half cavity, 121, a second side wall, 122, a rear wall, 123, a sliding door, 2, a lifting device, 3, a rotating device, 4, a suspension arm, 41, a machine arm, 5, a control chamber, 6, an ultrasonic cold spraying device, 61, an air compressor, 62, an air storage tank, 7, a generator, 8 and a dust collecting device.

Detailed Description

The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.

It should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" are intended to be construed broadly, as if they were connected either fixedly or removably, or as integrally formed structures. To those of ordinary skill in the art, the specific meaning of such terms in this patent may be understood as appropriate.

As shown in fig. 1 and fig. 2, the aerodynamic cold spraying work unit designed by the present invention comprises a closed spraying chamber 1 and a supersonic cold spraying device 6, wherein a generator 7 and a dust collecting device 8 for collecting dust in the spraying chamber 1 are arranged inside the spraying chamber 1, and a control chamber 5 is arranged outside the spraying chamber 1; the spraying chamber 1 comprises a first half cavity 11 and a second half cavity 12; the first half-cavity 11 comprises two first side walls 111, a front wall 112 and a first top cover; the second half-cavity 12 comprises two second side walls 121, a rear wall 122 and a second top cover; the first side wall 111 is slidably connected to the second side wall 121.

The aerodynamic cold spraying working unit is provided with a first half cavity 11 and a second half cavity 12 which are connected in a sliding mode, the spraying chamber 1 is designed to be of a pull-type structure, the size of the spraying chamber 1 is adjusted according to the size of a workpiece to be sprayed, and therefore the problem that the size of the workpiece to be sprayed is limited by the size of the spraying chamber 1 is effectively solved; by designing the spray booth 1 to be a closed structure and adopting the dust collecting device 8 to recover dust generated during the spraying process, environmental pollution is effectively avoided.

The generator 7 provides power for all equipment or devices in the aerodynamic cold spraying working unit, so that stable power output is ensured, and the energy-saving and environment-friendly effects are achieved.

It should be noted that, the structure of the dust collecting device 8 is the prior art, and it is sufficient to recover the dust generated in the spraying process, for example, an upright filter drum type dust remover may be adopted, which is not an innovative point of the present invention and will not be described herein.

As shown in fig. 1 and fig. 2, a slide rail 113 is fixedly mounted on the first side wall 111; a sliding block is fixedly arranged on the second side wall 121; the sliding block is in sliding fit with the sliding rail 113 to realize sliding connection between the first side wall 111 and the second side wall 121.

Preferably, the first top cover and the second top cover are slidably connected to improve the sliding stability between the first half cavity 11 and the second half cavity 12, so as to improve the usability and the service life of the spray chamber 1.

As shown in fig. 1 and 2, a sliding door 123 is provided on the rear wall 122.

The first side wall 111, the front wall 112, the first top cover, the second side wall 121, the rear wall 122 and the second top cover are all adhered with sound-absorbing cotton paper for reducing noise and absorbing and isolating noise generated in the spraying process, so that the problem of large working noise of the existing cold spraying working unit is effectively solved.

As shown in fig. 1 and 2, the supersonic cold spray apparatus 6 includes an air compressor 61 disposed outside the spray booth 1, and an air tank 62, a powder feeder, and a spray gun disposed inside the spray booth 1. The air compressor 61 is connected with the air storage tank 62, and the air is compressed by the air compressor 61 to form compressed air which is stored in the air storage tank 62. Because the air tank 62 has a certain capacity, it can be ensured that the pressure of the compressed air flowing out of the air tank 62 is relatively stable.

An electromagnetic control valve is installed at the outlet of the air storage tank 62, so that automatic control is realized, and the residual pressure in the tank body can be monitored in real time.

Preferably, a pressure relief valve is installed on the air storage tank 62. When the pressure of the compressed air in the air storage tank 62 is greater than the setting pressure of the pressure release valve, the pressure release valve can automatically release the pressure, so that the pressure is effectively prevented from being too high, and the use safety of the ultrasonic rapid cooling spraying device 6 is improved.

The rest of the structure of the ultrasonic rapid cold spraying device 6 is the prior art, and is not the innovation point of the present invention, and is not described herein.

As shown in fig. 1 and 2, a suspension arm 4, a lifting device 2 for controlling the suspension arm 4 to lift, and a robot arm 41 capable of moving transversely along the suspension arm 4 are disposed in the spray booth 1; the lance is mounted on a robotic arm 41. By mounting the spray gun on the robot arm 41, the danger of manual operation is significantly reduced, and the error of manual centering is reduced, thereby improving the quality of ultrasonic quick cold spraying.

The spraying parameters are monitored in real time by a computer of the control room 5 and run in coordination with the robot arm 41, so that intelligent operations such as automatic control, real-time monitoring, process recording and the like are realized.

It should be noted that, the connection structure between the robot arm 41 and the suspension arm 4 is the prior art, and it is only required to enable the robot arm 41 to move transversely along the suspension arm 4, for example, a screw transmission mechanism or a rack-and-pinion transmission mechanism may be adopted, which is not an innovative point of the present invention and is not described herein again.

Preferably, the lifting device 2 comprises a longitudinal beam, and a screw rod and a first motor which are arranged on the longitudinal beam; the screw rod is connected with the first motor through a connecting jig; a screw rod nut is connected to the screw rod through threads; one end of the suspension arm 4 is connected with a lead screw nut. The lifting of the suspension arm 4 is realized by the screw rod transmission mechanism, so that the lifting of the suspension arm 4 is controlled by the lifting device 2.

Further, the suspension arm 4 is rotatably connected with the lead screw nut through the rotating device 3; the rotating device 3 comprises a slewing bearing arranged on a screw rod nut, a second motor and a speed reducer which are fixedly arranged on the suspension arm 4; an output shaft of the speed reducer is fixedly connected with a gear; the gear is meshed with the internal teeth of the slewing bearing. Namely, the suspension arm 4 is engaged with the internal teeth of the slewing bearing fixed on the feed screw nut through a gear by a speed reducer fixed on the suspension arm to complete the rotation action.

The aerodynamic cold spraying work unit is provided with the lifting device 2, the rotating device 3, the suspension arm 4 and other components, so that the machine arm 41 and the spray gun can move in a three-dimensional space according to work requirements, the spraying flexibility and quality are obviously improved, and the problem that the existing cold spraying work unit is inflexible in construction is effectively solved.

The working process of the aerodynamic cold spraying working unit is as follows:

1) after the volume of the spraying chamber 1 is adjusted according to the size of the workpiece to be sprayed, the workpiece to be sprayed is placed in the spraying chamber 1;

2) starting the ultrasonic quick cold spraying device 6, starting the spray gun to operate, and simultaneously starting the dust collecting device 8;

the robot arm 41 and the spray gun can move in a three-dimensional space according to the working requirement, and the spraying flexibility and quality are good;

the dust generated in the spraying process is recovered by a dust collecting device 8;

the noise generated in the spraying process is reduced by the sound-absorbing cotton paper;

3) after the operation of the spray gun is finished, the dust collecting device 8 is closed, the volume of the spraying chamber 1 is adjusted to the minimum state, and the used area is reduced.

The mechanisms, components and parts of the present invention which are not described in detail are all the existing structures which exist in the prior art. Can be purchased directly from the market.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.