CN116183497A - Spectrum diagnosis device suitable for welding in narrow space and micro-area plasma - Google Patents

Abstract

A spectroscopic diagnostic device suitable for welding in narrow spaces and micro-area plasma, including a plasma collection device, a three-dimensional mobile device and a fixed bracket. The fixed cabin of the spectrometer probe at the back end of the pipeline is set in the plasma collection pipeline, which is used to protect the protective lens of the spectrometer probe and the gas supply cabin for delivering gas to the plasma collection pipeline; the three-dimensional mobile device is used to install the plasma collection device to realize plasma collection. The movement of the acquisition device in three-dimensional space; the fixed bracket is used to fix the three-dimensional mobile device on the welding robot, and adjust the position and angle of the three-dimensional mobile device relative to the welding robot. The spectrum diagnosis device of the invention can avoid the influence of welding fumes on plasma collection and the damage of spectrometer probes by welding spatter, and realize plasma detection in narrow spaces and in micro-areas.

Description

A spectroscopic diagnostic device suitable for narrow space welding and micro-area plasma

technical field

The invention relates to a spectrum diagnosis device, in particular to a spectrum diagnosis device suitable for narrow space welding and micro-area plasma.

Background technique

Spectral diagnosis is a spectroscopic analysis method. By detecting information such as plasma spectral intensity and profile, information such as plasma electron density and temperature can be obtained. The spectroscopic analysis method is an indirect measurement that will not affect the plasma, and the amount of information obtained is rich. In the field of welding, plasma plume analysis, welding quality spectral monitoring, interaction spectral analysis between composite welding heat sources, etc. can be performed. When welding special-shaped parts or welding in a narrow space, due to space constraints, the spectrometer probe cannot directly penetrate into the narrow space, resulting in the inability to collect plasma information or insufficient collection accuracy.

Existing spectral diagnosis methods all point the spectrometer probe directly to the welding position, and collect the plasma spectral signal of the entire welding position. The obtained spectral signal reflects the change of the overall plasma physical signal, and cannot reflect the plasma in a small area. and is affected by welding fume and spatter, so the acquisition accuracy cannot be guaranteed. When welding in a narrow space, the probe cannot go deep into the narrow space, which will affect the acquisition accuracy and cannot realize micro-area plasma. In actual welding, the plasma density and temperature are different in different tiny areas, especially in swing laser-arc hybrid welding, when the beam swings to different positions, the plasma density will also change accordingly. Therefore, it is necessary to seek a spectroscopic diagnostic device suitable for narrow space welding and micro-area plasma.

Contents of the invention

The purpose of the invention is to solve the problem that the prior art cannot collect spectral information of narrow space welding and micro-area plasma, and provide a spectral diagnostic device suitable for narrow space welding and micro-area plasma.

The technical solution adopted by the present invention to achieve the purpose of the invention is: a spectral diagnostic device suitable for welding in narrow spaces and micro-area plasma, including a plasma acquisition device, a three-dimensional moving device and a fixed bracket;

The plasma collection device includes a plasma collection pipe, an umbrella end protective cover, a spectrometer probe fixed cabin arranged at the rear end of the plasma collection pipe, arranged in the plasma collection pipe, a protective lens for protecting the spectrometer probe and a spectrometer probe. Between the probe fixing cabin and the protective cover of the umbrella end, there is a gas supply cabin that can deliver gas to the plasma collection pipeline;

The gas supply chamber is wrapped on the outside of the plasma collection pipe, and the plasma collection pipe wrapped by the gas supply chamber has vent holes for sending the gas in the gas supply chamber into the plasma collection pipe;

The three-dimensional moving device is used to install the plasma collection device to realize the movement of the plasma collection device in three-dimensional space;

The fixing bracket is used to fix the three-dimensional mobile device on the welding robot, and adjust the position and angle of the three-dimensional mobile device relative to the welding robot.

The method for realizing spectral diagnosis by the spectrum diagnosis device of the present invention is: fixing the spectrometer probe in the spectrometer probe fixing cabin of the plasma collection device, installing the plasma collection device on the three-dimensional mobile device, and then fixing the three-dimensional mobile device on the welding robot , and adjust the position of the three-dimensional mobile device relative to the welding robot, so that the plasma collection pipe of the plasma collection device is at a suitable angle and position. Ventilate the plasma collection pipe through the air supply chamber, and control the air flow within an appropriate range so as not to affect the welding plasma; place the plasma collection pipe in a narrow space to be welded to realize the collection of welding plasma signals in a narrow space; The plasma collection pipe points to a certain area of the plasma, and the adjustment of the detection area is realized by adjusting the three-dimensional moving device during the collection process.

Compared with prior art, the beneficial effect of the present invention is:

1. The spectrum diagnosis device of the present invention is provided with an air delivery chamber, which enters into the plasma collection pipeline through the vent hole on the plasma collection pipeline to complete coaxial air supply, removes the smoke and dust at the end of the spectrum acquisition device, and avoids the smoke and dust from affecting the spectrum. The interference of collection ensures the accuracy of collection, and the gas supply chamber plays a role of buffering the air flow. After passing through the gas supply chamber, the flow rate of the gas sent out is slower, further reducing the impact on the plasma.

2. The spectral diagnosis device of the present invention is equipped with an umbrella end protective cover and a protective lens, which can prevent the spatter generated during welding from damaging the internal structure of the plasma acquisition device such as the spectrometer probe, the air supply chamber, the protective lens, and the spectrometer probe fixing cabin.

3. The spectral diagnostic device of the present invention is provided with a fixed cabin for spectrometer probes, which can be used to locate different types of spectrometer probes.

4. The length and thickness of the plasma collection pipe of the spectrum diagnosis device of the present invention can be selected according to the welding conditions. When welding in a narrow space, it can go deep into the narrow space for spectrum diagnosis.

5. The spectral diagnosis device of the present invention is equipped with a three-dimensional moving device, which can realize the movement of the plasma collection device in three-dimensional space, and is used to collect plasma signals in different micro regions.

Further, the plasma collection pipe of the present invention is located at the central axis of the protective cover at the umbrella end.

Furthermore, there are two umbrella-end protective covers in the present invention, and the two umbrella-end protective covers are arranged at the front end of the fixed cabin of the spectrometer probe. The umbrella end protective cover between the protective cover 1 and the spectrometer probe fixed cabin is recorded as the umbrella end protective cover 2; the air supply chamber is installed on the inside of the umbrella end protective cover 1, and the protective lens is installed on the inside of the umbrella end protective cover 2.

Two umbrella end protective covers are set, on the one hand, it can better prevent splashing, protect the internal structure of the plasma collection device such as the spectrometer probe and the gas supply cabin, the protective lens, the spectrometer probe fixed cabin, and facilitate the installation of the gas supply cabin and the protective lens, so that The whole structure is more coordinated and stable.

Still further, the air supply chamber of the present invention includes an air supply chamber body with external threads installed on the inner side of the protective cover of the umbrella end and an air capsule cover with internal threads. Holes and tubing connectors for connecting tubing.

The gas enters the gas supply chamber from the trachea joint, and then enters the plasma collection pipeline from the gas supply chamber through the vent hole on the plasma collection pipeline to complete the coaxial gas supply.

Still further, the fixed cabin of the spectrometer probe of the present invention includes a fixed cabin body, the front end of the fixed cabin body is provided with a spectrometer probe card slot that can fix the front ends of spectrometer probes of different sizes, and the rear end of the fixed cabin body is provided with a fixed cabin body cover. The nut is installed on the fixed rod on the fixed cabin cover and the rubber pad at the front end of the fixed rod, and the axial position of the fixed rod is adjusted through the wing nut, so that the rubber pad is pressed against the rear end of the spectrometer probe.

Further, the three-dimensional mobile device of the present invention includes a mobile platform and an adjustment device with a micrometer that can adjust the position of the mobile platform in the X, Y, and Z directions. The plasma collection device is installed on the mobile platform and adjusted by the adjustment device. The position of the mobile station can realize the movement of the plasma collection device in three-dimensional space, and collect plasma signals in different tiny areas.

The adjustment device of the three-dimensional mobile device is equipped with a micrometer, and the movement accuracy can reach 0.01mm, which can accurately adjust the plasma collection area of the plasma collection device and realize the collection of plasma signals in different micro areas.

Further, the specific way for the plasma collection device of the present invention to be installed on the mobile platform is as follows: a triangular card slot is fixed on the mobile platform, and the triangular card slot includes a triangular card slot base, a locking sleeve and a locking sleeve. Set the locking screw on the side of the cover, place the spectrometer probe fixing compartment part of the plasma acquisition device between the triangular card slot base and the locking sleeve, rotate the locking screw so that the locking screw presses the outer wall of the spectrometer probe fixing compartment to realize plasma Fixation of the acquisition device.

Further, the fixed bracket of the present invention includes a primary support rod, a secondary support rod, a connecting block that can move axially along the primary support rod, a fixed block one, a fixed block two that can move axially along the secondary support rod, and The third fixed block; the connecting block is fixedly connected to the welding robot, the first fixed block is rotatably connected to the second fixed block, and the third fixed block is fixedly connected to the three-dimensional moving device.

In this way, the position and angle of the three-dimensional mobile device can be conveniently adjusted through the fixed bracket, further realizing the adjustment of the position and angle of the plasma collection device, and assisting the three-dimensional mobile device to realize plasma collection during welding at different positions and angles.

The present invention will be further described in detail below through specific embodiments and accompanying drawings.

Description of drawings

FIG. 1 is a schematic diagram of a front view structure of a plasma collection device according to an embodiment of the present invention.

Fig. 2 is a schematic cross-sectional view of plane A-A of the front view structure of the plasma collection device according to the embodiment of the present invention.

Fig. 3 is a schematic side view structural diagram of a plasma collection device according to an embodiment of the present invention.

Fig. 4 is a schematic diagram of a three-dimensional structure of a spectral diagnostic device according to an embodiment of the present invention.

In the figure, 1 is the plasma collection pipeline, 2 is the air supply chamber, 3 is the fixed cabin of the spectrometer probe, 4 is the gas pipe joint, 5 is the spectrometer probe, 6 is the protective cover for the umbrella end, 7 is the protective lens, and 8 is the umbrella end protection Cover two, 9 is a rubber pad, 10 is a fixed rod, 11 is a fixed cabin cover, 12 is a butterfly nut, 13 is a connecting block, 14 is a fixed block 1, 15 is a primary support rod, 16 is a secondary support rod , 17 is a fixed block two, and 18 is a locking sleeve, and 19 is a locking screw, and 20 is a triangular draw-in groove base, and 21 is a three-dimensional mobile device, and 22 is a fixed block three, and 23 micrometers.

Detailed ways

Example

A spectral diagnostic device suitable for narrow space welding and micro-area plasma, Figure 4 is a three-dimensional structural schematic diagram of the embodiment of the spectral diagnostic device, as shown in Figure 4, the spectral diagnostic device includes a plasma acquisition device, a three-dimensional mobile device 21 and Fixed bracket, its structural characteristics are:

The plasma collection device includes a plasma collection pipe 1, an umbrella end protective cover, a spectrometer probe fixed cabin 3 arranged at the rear end of the plasma collection pipe 1, which is arranged in the plasma collection pipe 1, and is used to protect the protection of the spectrometer probe 5. The lens 7 and the air supply chamber 2 arranged between the fixed cabin 3 of the spectrometer probe and the protective cover at the umbrella end can deliver gas to the plasma collection pipeline 1;

The gas supply chamber 2 is wrapped on the outside of the plasma collection pipe 1, and the plasma collection pipe 1 wrapped by the gas supply chamber 2 has a ventilation hole for sending the gas in the gas supply chamber 2 into the plasma collection pipe 1;

The three-dimensional moving device 21 is used to install the plasma collection device to realize the movement of the plasma collection device in three-dimensional space;

The fixing bracket is used to fix the three-dimensional moving device 21 on the welding robot, and adjust the position and angle of the three-dimensional moving device 21 relative to the welding robot.

The plasma collection pipe 1 in this embodiment is located at the central axis of the protective cover at the umbrella end.

There are two umbrella end protective covers in this embodiment, and the two umbrella end protective covers are arranged at the front end of the spectrometer probe fixed cabin 3. The umbrella end protective cover between the protective cover one 6 and the spectrometer probe fixed cabin 3 is recorded as the umbrella end protective cover two 8; The inner side of the cover two 8. In this example, positioning pins are used for positioning between the two umbrella end protective covers and between the umbrella end protective cover and the spectrometer probe fixed compartment, specifically including the internal measurement of the first umbrella end protective cover with positioning pins, and the inner and outer sides of the second umbrella end protective cover respectively. Positioning pins and positioning holes are processed, and positioning holes are processed on the outside of the spectrometer probe fixing compartment. Umbrella end protection cover 1, umbrella end protection cover 2, and the spectrometer probe fixing compartment are connected sequentially through positioning holes and positioning pins to ensure that the plasma collection device is coaxial. Spend.

The air supply chamber 2 described in this embodiment comprises an air supply chamber 2 body with external threads and a gas chamber cover with internal threads installed on the inner side of the umbrella end protective cover. Through hole and the trachea connector 4 for connecting the trachea.

The spectrometer probe fixed cabin 3 described in this embodiment includes a fixed cabin body, the front end of the fixed cabin body is provided with a spectrometer probe card slot that can fix the front ends of spectrometer probes of different sizes, and the rear end of the fixed cabin body is provided with a fixed cabin body cover 11. The nut 12 is installed on the fixed rod 10 on the fixed cabin cover 11 and the rubber pad 9 at the front end of the fixed rod 10, and the axial position of the fixed rod 10 is adjusted through the wing nut 12, so that the rubber pad 9 presses the rear end of the spectrometer probe .

FIG. 1 is a front view schematic diagram of the plasma collection device of this embodiment. FIG. 2 is a schematic cross-sectional view of plane A-A of FIG. 1 , that is, a schematic cross-sectional diagram of plane A-A of the front view structure of the plasma collection device of this embodiment. Fig. 3 is a schematic side view structural diagram of the plasma collection device of this embodiment.

The three-dimensional mobile device 21 described in this embodiment includes a mobile platform and an adjustment device with a micrometer 23 that can adjust the position of the mobile platform in the X, Y, and Z directions. The plasma collection device is installed on the mobile platform, and through the adjustment device Adjusting the position of the mobile platform can realize the movement of the plasma collection device in three-dimensional space, and collect plasma signals in different tiny areas.

The specific way that the plasma collection device described in this embodiment is installed on the mobile platform is: a triangular card slot is fixed on the mobile platform, and the triangular card slot includes a triangular card slot base 20, a locking sleeve 18 and a lock The locking screw 19 on the side of the tight sleeve 18 places the third part of the spectrometer probe fixing compartment of the plasma acquisition device between the triangular card slot base 20 and the locking sleeve 18, and rotates the locking screw 19 so that the locking screw 19 presses the spectrometer The outer wall of the probe fixing cabin 3 realizes the fixing of the plasma collection device.

The fixed bracket described in this embodiment includes a primary support rod 15, a secondary support rod 16, a connecting block 13 that can move axially along the primary support rod 15, and a fixed block 14 that can move axially along the secondary support rod 16. The second fixed block 17 and the third fixed block 22; the connecting block 13 is fixedly connected with the welding robot, the first fixed block 14 is rotatably connected with the second fixed block 17, and the third fixed block 22 is fixedly connected with the three-dimensional mobile device 21 .

Claims (8)

1. The utility model provides a spectral diagnosis device suitable for narrow and small space welding and microcell plasma, includes plasma collection system, three-dimensional mobile device and fixed bolster, its characterized in that:

the plasma acquisition device comprises a plasma collection pipeline, an umbrella end protective cover, a spectrometer probe fixing cabin arranged at the rear end of the plasma collection pipeline, a protective lens arranged in the plasma collection pipeline and used for protecting a spectrometer probe, and a gas delivery cabin arranged between the spectrometer probe fixing cabin and the umbrella end protective cover and capable of delivering gas to the plasma collection pipeline;

the air supply cabin is wrapped outside the plasma collecting pipeline, and the plasma collecting pipeline wrapped by the air supply cabin is provided with a vent hole for supplying the air of the air supply cabin into the plasma collecting pipeline;

the three-dimensional moving device is used for installing the plasma collecting device and realizing the movement of the plasma collecting device in a three-dimensional space;

the fixing support is used for fixing the three-dimensional moving device on the welding robot and adjusting the position and the angle of the three-dimensional moving device relative to the welding robot.

2. A spectroscopic diagnostic device for welding and micro-area plasma in a confined space as claimed in claim 1 wherein: the plasma collecting pipeline is positioned at the center shaft position of the umbrella end protective cover.

3. A spectroscopic diagnostic device for welding and micro-area plasma in a confined space as claimed in claim 2 wherein: the two umbrella end protection covers are uniformly distributed at the front end of the spectrometer probe fixing cabin, the umbrella end protection cover at the forefront end is marked as an umbrella end protection cover I, and the umbrella end protection cover between the umbrella end protection cover I and the spectrometer probe fixing cabin is marked as an umbrella end protection cover II; the air supply cabin is arranged on the inner side of the first umbrella end protection cover, and the protection lens is arranged on the inner side of the second umbrella end protection cover.

4. A spectroscopic diagnostic device for welding and micro-area plasma in a confined space as claimed in claim 2 wherein: the air supply cabin comprises an air supply cabin body with external threads and an air cabin cover with internal threads, wherein the air supply cabin body is arranged on the inner side of the umbrella end protection cover, and the air cabin cover is provided with a through hole capable of penetrating through the plasma collecting pipeline and an air pipe connector for connecting an air pipe.

5. A spectroscopic diagnostic device for welding and micro-area plasma in a confined space as claimed in claim 2 wherein: the spectrometer probe fixing cabin comprises a fixing cabin body, the front end of the fixing cabin body is provided with spectrometer probe clamping grooves capable of fixing the front ends of spectrometer probes of different sizes, the rear end of the fixing cabin body is provided with a fixing cabin body cover, a fixing rod arranged on the fixing cabin body cover through a butterfly nut and a rubber pad arranged at the front end of the fixing rod, and the axial position of the fixing rod is adjusted through the butterfly nut, so that the rubber pad compresses the rear end of the spectrometer probe.

6. A spectroscopic diagnostic device for welding and micro-area plasma in a confined space as claimed in claim 1 wherein: the three-dimensional moving device comprises a moving table and an adjusting device with a micrometer, wherein the position of the moving table in the X, Y, Z direction can be adjusted, the plasma collecting device is arranged on the moving table, the position of the moving table is adjusted through the adjusting device, the movement of the plasma collecting device in a three-dimensional space can be realized, and plasma signals of different micro areas can be collected.

7. A spectroscopic diagnostic device for welding and micro-area plasma in a confined space as claimed in claim 1 wherein: the specific mode of installing the plasma acquisition device on the mobile station is as follows: the mobile station is fixedly provided with a triangular clamping groove, the triangular clamping groove comprises a triangular clamping groove base, a locking sleeve and locking screws arranged on the side face of the locking sleeve, a spectrometer probe fixing cabin part of the plasma collecting device is arranged between the triangular clamping groove base and the locking sleeve, and the locking screws are rotated to enable the locking screws to be pressed against the outer wall of the spectrometer probe fixing cabin, so that the plasma collecting device is fixed.

8. A spectroscopic diagnostic device for welding and micro-area plasma in a confined space as claimed in claim 1 wherein: the fixing support comprises a first-stage supporting rod, a second-stage supporting rod, a connecting block and a first fixing block which can axially move along the first-stage supporting rod, and a second fixing block and a third fixing block which can axially move along the second-stage supporting rod; the connecting block is fixedly connected with the welding robot, the first fixing block is rotatably connected with the second fixing block, and the third fixing block is fixedly connected with the three-dimensional moving device.

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