A mask with arc sound collection and welding quality prompting function

Abstract

The present application relates to a kind of mask with arc sound acquisition and welding quality prompt function, including welding mask body, welding mask glass, vibrating device and recording collection transmitter, also including acoustic porous coupler, the both sides of welding mask body are equipped with lug, recess is set in lug, vibrating device and recording collection transmitter are respectively installed in the recess in the lug of the both sides of welding mask body, two acoustic porous couplers are symmetrically arranged above welding mask body, acoustic porous coupler is communicated with the recess for installing recording collection transmitter by receiving structure;The present application can simulate the noise reduction function of human ear auricle and the acoustic characteristics of binaural stereo sound field sampling by receiving structure and acoustic porous coupler, to better simulate the welding arc sound that skilled welder actually hears, after human ear processing, make subsequent processing more efficient and accurate.

Description

Technical Field

[0001] This invention belongs to the field of welding quality control technology and relates to a mask with arc sound acquisition and welding quality prompting functions. Background Technology

[0002] With the continuous development of modern manufacturing, welding technology has been widely used in fields such as machinery, electronics, and materials. Currently, welding is one of the most common methods for joining metal parts in manufacturing. The quality of welding is the most important focus during the welding process, and the weld penetration state is closely related to weld quality. Therefore, to further improve welding efficiency, optimize welding quality, and better meet the requirements of modern production, accurately identifying and judging the weld penetration state has become a key concern for enterprises.

[0003] Field practice shows that experienced welders can usually make a rough judgment on the weld penetration state based solely on the sound of the electric arc, and can adjust process parameters in real time using the arc sound to produce many high-quality welds. This indicates that the electric arc sound signal, as a non-contact sound signal, also contains a large amount of welding information and can be used to judge the weld penetration state.

[0004] However, training a skilled welder requires extensive practice and guidance from experienced welders, which undoubtedly increases the company's time and labor costs. Furthermore, judging the sound of the electric arc is a welder's subjective feeling, which is difficult to describe and convey to novice welders. Therefore, there is a need for a device that allows novice welders to perceive changes in the weld's condition in real time. This device would provide guidance on the weld's penetration status, enabling welders to adjust their welding posture and control weld quality.

[0005] This device allows welders to develop a more efficient and accurate sensitivity to the sound of electric arcs. It also helps welders produce higher-quality welds, which can help companies reduce time and labor costs and improve production efficiency.

[0006] Patent CN114633000A provides a method for using the sound of an electric arc to assist welders in judging the weld penetration status online. However, the mask designed in this method does not take into account the noise reduction of the sound signal. Since welding takes place in an industrial environment, it is severely affected by environmental noise, which makes the accuracy of assisting welders in identifying the weld penetration status very low, making it difficult to complete the welding work.

[0007] Furthermore, in the mask designed in patent CN114633000A, the sound sensor and the vibration device are integrated together. When the vibration device vibrates, it will cause friction and generate a certain amount of noise. Integrating the sound sensor together will record and collect this noise together, which will ultimately affect the accuracy of judging the weld penetration status.

[0008] Therefore, it is of great significance to study a mask with the functions of arc sound acquisition and welding quality indication in order to solve the impact of noise on the accuracy of weld penetration state judgment. Summary of the Invention

[0009] The purpose of this invention is to solve the problems existing in the prior art and provide a face mask with the functions of arc sound acquisition and welding quality indication.

[0010] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0011] A welding mask with welding arc sound acquisition and welding quality vibration indication functions includes a welding mask body, a welding mask glass, a vibration device, and a recording acquisition and transmission device. It also includes acoustic multi-hole couplers. The welding mask body has protrusions on both sides, and grooves are formed in the protrusions. The vibration device and the recording acquisition and transmission device are respectively installed in the grooves in the protrusions on both sides of the welding mask body. Two acoustic multi-hole couplers are symmetrically arranged above the welding mask body to imitate the stereo sound field structure of human ears. The acoustic multi-hole couplers are connected to the grooves for installing the recording acquisition and transmission device through a sound receiving structure.

[0012] The acoustic multi-hole coupler includes a first receiving layer, a second receiving layer, and a support layer connected in sequence. Both the second receiving layer and the support layer are cylindrical, and a through-hole sound transmission cavity is formed at the center of both the second receiving layer and the support layer. The first receiving layer includes a frustum-shaped protrusion, a disk, and a cylinder. The bottom surface (i.e., the large end face of the frustum) of the frustum-shaped protrusion is mounted on the disk. The disk is mounted in the cylinder, and the disk is connected and fixed to the cylinder by a connecting rod. The side of the disk away from the frustum-shaped protrusion is connected to the sound transmission cavity at the center of the second receiving layer through a first receiving post. The second receiving layer is connected to the support layer through several (not less than two) second receiving posts. The sound transmission cavity at the center of the support layer is connected to the receiving structure.

[0013] As a preferred technical solution:

[0014] As described above, a mask with welding arc sound acquisition and welding quality vibration indication functions has symmetrical wave-shaped grooves above the groove for installing the recording acquisition transmitter. The sound receiving structure is connected to it. At the lower end of the sound receiving structure, there is a horn-shaped enlarged opening, which connects all the grooves and grooves to form a connection. These specially shaped cavities can mimic the acoustic characteristics of sound source transmission to the brain and fully mixing before being collected by the recording acquisition transmitter.

[0015] As described above, a face mask with welding arc sound acquisition and welding quality vibration indication functions has a central axis that does not coincide with the central axis of the disc. This non-coincidence allows for a reduction in size while allowing for the arrangement of crescent-shaped sound-collecting holes on the side away from the disc (if the centers coincide, blank volume would be left on both sides of the disc, and one side would need to have crescent-shaped sound-collecting holes arranged while the other side does not, resulting in wasted volume on the side that does not need to be arranged. By using a non-coincidence arrangement, the side that does not need to be arranged can be completely removed, reducing the size).

[0016] The disc has several sound-receiving holes arranged in a rhombus and crescent shape (the rhombus-shaped sound-receiving holes and the crescent-shaped sound-receiving holes are at the same height and have the same function as the crescent-shaped sound-receiving holes, but they can filter out different sound frequencies due to their different shapes). The disc also has two symmetrically arranged horn-shaped slots.

[0017] The first microphone column is cylindrical, and a through hole is provided at the center of the first microphone column. Several microphone holes are provided on the side of the first microphone column. The microphone holes on the first microphone column are perpendicular to the side of the first microphone column and are connected to the through hole at the center of the first microphone column.

[0018] The through hole at the center of the first sound-receiving column is connected to the sound transmission cavity at the center of the second sound-receiving layer;

[0019] The second sound receiving layer has several sound receiving holes arranged in a circular array. Specifically, the sound receiving holes on the second sound receiving layer are arranged in groups of three, distributed according to the three vertices of a triangle, and multiple groups of sound receiving holes are arranged in a circular array.

[0020] The second sound receiving layer is connected to the support layer by a plurality of (preferably 6 in this embodiment) second sound receiving columns arranged in a ring. The second sound receiving column is cylindrical (the surface of the cylinder is a circular curved surface, which has good sound reflection characteristics and can reduce the dissipation and absorption of electric arc sound in this structure).

[0021] The acoustic porous coupler design in this invention mimics the noise reduction characteristics of the human ear's auricle, thus performing noise reduction preprocessing on actual welding arc sounds similar to that of the human ear. This better simulates the welding arc sound signal actually heard by skilled welders, making subsequent processing more efficient and accurate. When sound waves pass through the human ear's auricle, their frequency characteristics are affected by the shape and structure of the auricle, causing different frequencies of sound to be affected to varying degrees during propagation. This results in a unique acoustic characteristic of the human ear: it passes low frequencies and blocks high frequencies. In the low-frequency range, sound waves have longer wavelengths and can relatively easily pass through the auricle into the ear canal and reach the inner ear. Therefore, the human ear does not have a significant blocking effect on low-frequency sounds, which can enter the inner ear relatively easily. However, in the high-frequency range, sound waves have relatively shorter wavelengths. When these high-frequency sounds pass through the auricle, they are affected by the shape of the auricle, resulting in diffraction and scattering effects, which weaken the energy of the high-frequency sounds. This effect causes the human ear to have a strong attenuation effect on high-frequency sounds, meaning that high-frequency sounds are blocked or weakened. Therefore, the human ear's characteristic of allowing low frequencies and blocking high frequencies makes low-frequency sounds pass through more easily, while high-frequency sounds are blocked or attenuated. In actual arc welding, the frequency range of the welding arc sound is usually between several hundred Hz and several thousand Hz, while environmental noise, such as the sound of high-speed shielding airflow, the sound of the dry cutter, and the sound of the cooling machine, are all relatively sharp sounds, i.e., high-frequency noise. Therefore, acoustic multi-hole couplers utilize the acoustic characteristic of allowing low frequencies and blocking high frequencies to filter out environmental noise and retain the required welding arc sound.

[0022] Firstly, the acoustic multi-aperture coupler's design employs multiple sound-receiving holes and channels, all of which are relatively small (diameter less than 2mm; the holes on the first receiving layer are 1mm in diameter, and those on the second receiving layer are 1.5mm in diameter). A specific structural design was implemented, resulting in relatively harsh noise generated during the welding process. The sharper the sound, the higher its frequency. According to the Huygens-Fresnel principle, diffraction occurs when sound waves encounter a small hole. Diffraction refers to the phenomenon of sound waves propagating around the edge of an obstacle. Shorter wavelength sounds (the higher the frequency, the shorter the wavelength) undergo stronger diffraction when passing through a small hole, leading to greater scattering and dispersion during propagation. Therefore, shorter wavelength sounds encounter more resistance and are more difficult to pass through smaller apertures. Utilizing this characteristic, through relevant analysis, arranging sound-receiving holes and channels of specific structures and sizes on the acoustic multi-aperture coupler can effectively dissipate high-frequency noise and reduce its propagation, thus mimicking the acoustic characteristics of the human ear's attenuation of high-frequency noise.

[0023] Secondly, the structure of the acoustic porous coupler exhibits a resonance effect at specific frequencies. Through relevant analysis, by designing specific structures and sizes of sound-receiving holes and channels, as well as the number of sound-receiving layers and columns, and the thicknesses of the sound-receiving layers, support layers, and sound-receiving columns (the thickness of the first sound-receiving layer is 2mm, the thickness of the first sound-receiving column is 1mm, the thickness of the second sound-receiving layer is 4mm, the thickness of the second sound-receiving column is 1mm, and the thickness of the support layer is 5mm), the acoustic porous coupler can resonate and amplify sounds within the audible range of the human ear, further preserving the welding arc sound after filtering out environmental noise, thereby mimicking the acoustic characteristics of the human ear's greater sensitivity to sounds at specific frequencies.

[0024] As described above, a mask with welding arc sound acquisition and welding quality vibration indication functions includes a sound-receiving structure comprising a main sound transmission cavity channel and two branch sound transmission cavity channels. The main sound transmission cavity channel is disposed on the welding mask body. One end of each of the two branch sound transmission cavity channels is connected to the sound transmission cavity at the center of the support layer in the two acoustic porous couplers, and the other end of each of the two branch sound transmission cavity channels is connected to the main sound transmission cavity channel. The main sound transmission cavity channel is connected to a groove for mounting the recording acquisition transmitter.

[0025] As described above, a mask with welding arc sound acquisition and welding quality vibration indication functions is provided. The branch sound transmission cavity channel is a cylindrical hollow pipe, which is used to transmit the sound processed by the acoustic multi-hole coupler. The outer wall of the branch sound transmission cavity channel has external threads, and the inner wall of the sound transmission cavity at the center of the support layer has internal threads. The outer wall of the branch sound transmission cavity channel and the inner wall of the sound transmission cavity at the center of the support layer are fixedly connected by internal and external threads.

[0026] As described above, a face shield with welding arc sound acquisition and welding quality vibration indication functions includes a vibration device comprising a vibration signal receiving and control module, a vibration imbalance block, a vibration motor, a vibration power supply, and a vibration motor drive module. The protrusion used to mount the vibration device has five grooves: one groove at the top and one at the bottom, and three grooves in the middle. The vibration signal receiving and control module is installed in the upper groove of the protrusion. The vibration imbalance block, the vibration motor, and the vibration power supply are respectively installed in the three grooves in the middle of the protrusion. The vibration motor drive module is installed in the lower groove of the protrusion.

[0027] A vibrating housing covering the five grooves is installed on the protrusion where the vibration device is located.

[0028] As described above, a face mask with welding arc sound acquisition and welding quality vibration indication functions includes three grooves in the middle of the protrusion, labeled from left to right as groove I, groove II, and groove III. The upper groove of the protrusion is connected to groove II through hole a, groove II is connected to groove I through hole b, groove II is connected to groove III through hole c, and groove III is connected to the lower groove of the protrusion through hole d. A vibration imbalance block is installed in groove I, and the size of the dynamic imbalance block is smaller than that of groove I, thus ensuring that the vibration imbalance block can be transmitted without resistance within groove I to generate the required vibration. A vibration motor is installed in groove II, and a vibration power supply is installed in groove III. The rotating shaft of the vibration motor passes through through hole b and is connected to the vibration imbalance block with a clearance fit. The vibration signal receiving and control module is electrically connected to the vibration motor drive module via signal lines passing through holes a and d in sequence. The vibration motor drive module is electrically connected to the vibration motor via signal lines passing through hole d, and the vibration motor is electrically connected to the vibration power supply via signal lines passing through hole c.

[0029] The audio recording transmitter is electrically connected to the computer, and the computer is electrically connected to the vibration signal receiving and control module.

[0030] The audio acquisition and transmission unit collects the welding arc sound in real time, then transmits the collected sound signal to a computer for processing and analysis to determine the weld penetration state. Based on different penetration states, it sends different vibration frequency signals. Finally, the vibration signal receiving and control module receives and processes the vibration signals of different frequencies, controlling the vibration motor to generate vibrations of different amplitudes. The determined weld penetration state is fed back to the welder through vibrations of the welding mask at different frequencies to assist the welder in judging the welding quality. When the weld penetration state is incomplete, the feedback vibration frequency is 200Hz; when the weld penetration state is complete, the feedback vibration frequency is 0Hz, meaning the vibration device does not vibrate; when the weld penetration state is molten pool collapse, the feedback vibration frequency is 1000Hz.

[0031] As described above, a face shield with welding arc sound acquisition and welding quality vibration indication functions includes a vibration signal receiving and control module with circular holes at its four corners. The bottom of the groove at the upper part of the protrusion has four bases of a certain height, and cylindrical bosses are fixed on the bases, passing through the circular holes at the four corners of the vibration signal receiving and control module. The bottom of the groove at the lower part of the protrusion has two ridges of a certain height, and the vibration motor drive module is glued to these two ridges without contacting the groove wall. This design prevents the vibration signal receiving and control module and the vibration motor drive module from loosening due to vibration impact, aids in heat dissipation, and avoids interference from other components. The outer surface of the vibration power supply is covered with shock-absorbing material, ensuring the vibration power supply is completely fixed within the groove III. The vibration motor is glued to the bottom of the groove II.

[0032] As described above, a mask with welding arc sound acquisition and welding quality vibration indication functions is provided, wherein the vibration shell is fixedly connected to the protrusion for mounting the vibration device via vibration bolts.

[0033] The mask described above, which has the functions of collecting welding arc sound and providing vibration alerts for welding quality, further includes a recording dust cover. The recording dust cover covers the groove on the protrusion used to install the recording acquisition and transmission device. The recording dust cover is fixedly connected to the protrusion used to install the recording acquisition and transmission device by dust cover bolts.

[0034] The mask described above, which has the functions of collecting welding arc sound and indicating welding quality vibration, also includes a mask strap; the mask strap is fixedly connected to the welding mask body by strap bolts.

[0035] Beneficial effects:

[0036] (1) This invention is equipped with a recording acquisition and transmission device. In actual working conditions, this device can continuously and in real time acquire the arc sound reflected from the weld pool, and process the acquired arc sound signal through a computer at high speed to distinguish the weld penetration state. Then, the vibration signal receiving and control module receives different vibration signals generated by the computer according to the weld penetration state, and drives the vibration unit to generate vibrations of different frequencies according to the signals to provide real-time feedback on the weld penetration state to the welder. Compared with the prior art, this device can achieve real-time detection and feedback, which can further improve the weld quality.

[0037] (2) The present invention has a sound receiving structure designed above the welding mask, and a sound transmission cavity designed therein to connect to the recording acquisition transmitter; an acoustic multi-hole coupler designed at the front end of the sound receiving structure to simulate the noise reduction and filtering of the human ear auricle. Through these structures, the noise reduction function of the human ear auricle and the acoustic characteristics of binaural stereo sound field acquisition can be simulated to better simulate the welding arc sound that skilled welders actually hear after human ear processing, making subsequent processing more efficient and accurate.

[0038] (3) This invention is equipped with an independent vibration motor drive module. Using PWM modulation, the motor can be driven to generate vibrations of different frequencies, allowing the welder to adjust their welding posture online according to the vibration amplitude, thus avoiding welding operation errors. While controlling the welding quality, it also enhances the welder's welding skills. At the same time, the vibration amplitude of these three vibration frequencies will not be too large to affect the welder's normal welding process.

[0039] (4) An acoustic porous coupler and sound transmission cavity structure simulating the function of the human ear are adopted. The structure of the acoustic porous coupler and sound transmission cavity is designed according to the frequency characteristics of the welding arc sound, so that the sound signal within the arc sound frequency range is amplified, while other frequency sound signals are suppressed. At the same time, the designed acoustic porous coupler and sound transmission cavity can also play a role in preventing splashes and dust, and protecting the recording acquisition and transmission device. Attached Figure Description

[0040] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0041] Figure 2 This is a schematic diagram of the main structure of the present invention;

[0042] Figure 3 The left edge of the present invention Figure 2 Schematic diagram of the full cross-section of the AA structure;

[0043] Figure 4 The right side of the invention Figure 2 Enlarged cross-sectional view of the middle HH structure;

[0044] Figure 5 The right side of the invention Figure 4 Enlarged sectional view of the central KK structure;

[0045] Figure 6 This is a partial enlarged cross-sectional view of the symmetrical wave-shaped gully structure of the present invention;

[0046] Figure 7 For the present invention along Figure 2 Schematic diagram of the full cross-section of the left side of the middle BB;

[0047] Figure 8This is a magnified half-section diagram of the acoustic multi-hole coupler of the present invention from the left view.

[0048] Figure 9 This is a magnified schematic diagram of the acoustic multi-hole coupler structure of the present invention.

[0049] Figure 10 The first receiving layer of the acoustic porous coupler of the present invention is along Figure 8 Schematic diagram of the full cross-section of the DD structure;

[0050] Figure 11 The first receiving post of the acoustic multi-hole coupler of the present invention is along Figure 8 Schematic diagram of the full cross-section of the EE structure;

[0051] Figure 12 The second sound receiving layer of the acoustic porous coupler of the present invention is along Figure 8 Schematic diagram of the full cross-section of the FF structure;

[0052] Figure 13 The second receiving post of the acoustic multi-hole coupler of the present invention is along Figure 8 Schematic diagram of the full cross-section of the GG (Gross Girder);

[0053] Figure 14 This is a top-view partial cross-sectional structural diagram of the present invention;

[0054] Among them, 1-welded mask body, 2-vibration imbalance block, 3-vibration motor, 4-vibration signal receiving and control module, 5-vibration motor drive module, 6-vibration bolt, 7-vibration power supply, 8-recording acquisition and transmission device, 9-top recording bolt, 10-bottom recording bolt, 11-welded mask glass, 12-vibration shell, 13-mask strap, 14-strap bolt, 15-side recording bolt, 16-recording dust cover, 17-dust cover bolt, 18- Acoustic multi-hole coupler, 19-main sound transmission cavity channel, 20-groove, 21-upper groove, 22-lower groove, 23-groove I, 24-groove II, 25-groove III, 26-threaded structure, 27-hole b, 28-hole c, 29-first sound receiving layer, 30-second sound receiving layer, 31-support layer, 32-frustum-shaped protrusion, 33-disc, 34-cylinder, 35-sound receiving hole, 36-second sound receiving column, 37-outer wall of branch sound transmission cavity channel. Detailed Implementation

[0055] The present invention will be further described below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the invention, and these equivalent forms also fall within the scope defined by the appended claims.

[0056] A mask with functions of collecting welding arc sound and indicating welding quality vibration, such as Figures 1-3 As shown in Figures 1 and 14, the mask includes a welding mask body 1, a welding mask glass 11, a vibration device, a recording acquisition and transmission device 8, an acoustic multi-hole coupler 18, a sound receiving structure, a recording dust cover 16, and a mask strap 13.

[0057] Both sides of the welding mask body 1 are provided with protrusions, and grooves are opened in the protrusions. The vibration device and the audio recording and transmitting device 8 are respectively installed in the grooves in the protrusions on both sides of the welding mask body 1.

[0058] like Figures 8-13 As shown, the acoustic porous coupler 18 includes a first receiving layer 29, a first receiving post, a second receiving layer 30, a second receiving post 36, and a support layer 31;

[0059] The first sound receiving layer 29 includes a frustum-shaped protrusion 32, a disk 33, and a cylinder 34. The disk 33 has several sound receiving holes 35, which are arranged in a rhombus and crescent shape. The disk 33 also has two symmetrically formed horn-shaped slots. The frustum-shaped protrusion 32 is used to block sound and force it to enter the acoustic multi-hole coupler through the sound receiving holes on the side. The bottom surface of the frustum-shaped protrusion 32, i.e., the large end face of the frustum, is mounted on the disk 33. The central axis of the frustum-shaped protrusion 32 does not coincide with the central axis of the disk 33. The disk 33 is mounted in the cylinder 34 and is connected and fixed to the cylinder 34 by a connecting rod.

[0060] The first microphone column is cylindrical, and a through hole is provided in the center of the first microphone column. Several microphone holes 35 are provided on the side of the first microphone column. The microphone holes 35 on the first microphone column are perpendicular to the side of the first microphone column and are connected to the through hole in the center of the first microphone column.

[0061] Both the second receiving layer 30 and the support layer 31 are cylindrical, and a through sound transmission cavity is opened at the center of both the second receiving layer 30 and the support layer 31; the second receiving layer 30 has a number of sound receiving holes 35 arranged in a ring array. Specifically, the sound receiving holes 35 on the second receiving layer 30 are arranged in groups of three, distributed according to the three vertices of a triangle, and multiple groups of sound receiving holes 35 are arranged in a ring array.

[0062] The side of the disk 33 of the first sound receiving layer 29 away from the frustum-shaped protrusion 32 is connected to the sound transmission cavity at the center of the second sound receiving layer 30 through the through hole at the center of the first sound receiving column; the second sound receiving layer 30 is connected to the support layer 31 through 6 ring-shaped second sound receiving columns 36, and the second sound receiving columns 36 are cylindrical.

[0063] like Figures 4-6As shown, the sound receiving structure includes a main sound transmission cavity channel 19 and two branch sound transmission cavity channels. The main sound transmission cavity channel 19 is set on the welded mask body 1, and the branch sound transmission cavity channels are cylindrical hollow pipes. The two branch sound transmission cavity channels are symmetrically arranged above the welded mask body 1. The outer wall 37 of the branch sound transmission cavity channel has external threads, and the inner wall of the sound transmission cavity at the center of the support layer 31 of the acoustic porous coupler has internal threads. The outer wall 37 of the branch sound transmission cavity channel and the inner wall of the sound transmission cavity at the center of the support layer 31 of the acoustic porous coupler are fixedly connected by internal and external threads (internal and external threads form a thread structure 26). The other end of each of the two branch sound transmission cavity channels is connected to the main sound transmission cavity channel 19. Symmetrical wave-shaped grooves 20 are opened above the groove for installing the recording acquisition transmitter 8, and the main sound transmission cavity channel 19 is connected to the grooves 20.

[0064] like Figure 7 As shown, the vibration device includes a vibration signal receiving and control module 4, a vibration imbalance block 2, a vibration motor 3, a vibration power supply 7, and a vibration motor drive module 5.

[0065] The grooves on the protrusion used to mount the vibration device include a groove 21 at the top of the protrusion, a groove in the middle of the protrusion, and a groove 22 at the bottom of the protrusion; the grooves in the middle of the protrusion are respectively labeled as groove I 23, groove II 24, and groove III 25 from left to right; the groove 21 at the top of the protrusion is connected to groove II 24 through hole a, groove II 24 is connected to groove I 23 through hole b 27, groove II 24 is connected to groove III 25 through hole c 28, and groove II 24 is connected to groove 22 at the bottom of the protrusion through hole d;

[0066] The vibration signal receiving and control module 4 has circular holes at its four corners. The bottom of the groove 21 at the top of the protrusion has four bases. A cylindrical protrusion is fixed on the base and passes through the circular holes at the four corners of the vibration signal receiving and control module 4.

[0067] Two ridges are provided at the bottom of the groove 22 at the lower part of the protrusion, and the vibration motor drive module 5 is glued to the two ridges;

[0068] The vibration imbalance block 2 is installed in the groove I 23, the vibration motor 3 is installed in the groove II 24, and the vibration power supply 7 is installed in the groove III 25; the outer surface of the vibration power supply 7 is covered with damping material; the vibration motor 3 is glued to the bottom of the groove II 24.

[0069] The shaft of the vibration motor 3 passes through the through hole b and is connected to the vibration unbalance block 2 with a clearance fit; the vibration signal receiving and control module 4 is electrically connected to the vibration motor drive module 5 by passing through holes a and d in sequence using DuPont wires; the vibration motor drive module 5 is electrically connected to the vibration motor 3 by passing through hole d using DuPont wires; the vibration motor 3 is electrically connected to the vibration power supply 7 by passing through hole c 28 using DuPont wires; the vibration housing 12 is fixedly connected to the protrusion used to install the vibration device by vibration bolts 6;

[0070] The audio recording transmitter 8 is fixed vertically by the top recording bolt 9 and the bottom recording bolt 10, and horizontally by the side recording bolt 15.

[0071] The audio recording and acquisition transmitter 8 is electrically connected to the computer, and the computer is electrically connected to the vibration signal receiving and control module 4.

[0072] The recording dust cover 16 covers the groove on the protrusion used to install the recording acquisition transmitter 8; the recording dust cover 16 is fixedly connected to the protrusion used to install the recording acquisition transmitter 8 by dust cover bolts 17.

[0073] The mask straps 13 are fixedly connected to the welded mask body 1 by strap bolts 14.

[0074] Working principle: When a welder performs manual arc welding, they wear the welding mask and activate the audio recording and transmission unit 8 and the vibration module. During manual arc welding, the solder contacts the base material to generate an electric arc. The arc sound is reflected by the molten pool on the base material, processed by the acoustic multi-hole coupler 18, and then transmitted through the sound transmission cavity to the audio recording and transmission unit 8. The audio recording and transmission unit collects the welding arc sound in real time, and then transmits the collected sound signal to the computer for processing, analysis, and judgment of the weld penetration state. Based on different penetration states, it sends different vibration frequency signals. Finally, the vibration signal receiving and control module 4 receives and processes vibration signals of different frequencies, controls the vibration motor to generate vibrations of different amplitudes, and feeds back the judged weld penetration state to the welder in the form of vibrations of the welding mask at different frequencies to assist the welder in judging the welding quality. When the weld penetration state is incomplete, the feedback vibration frequency is 200Hz; when the weld penetration state is complete, the feedback vibration frequency is 0Hz, that is, the vibration device does not vibrate; when the weld penetration state is molten pool collapse, the feedback vibration frequency is 1000Hz.

[0075] When a welder performs manual arc welding, they wear the welding mask and activate the audio recording and transmission device 8 and the vibration module. First, during manual arc welding, the solder contacts the base material to generate an electric arc. The sound of the arc is reflected by the molten pool on the base material, processed by the acoustic multi-hole coupler 18, and then transmitted through the sound transmission cavity to the audio recording and transmission device 8. The audio recording and transmission device collects the arc sound and sends it to the back-end computer for processing and judgment.

[0076] After the computer determines the weld penetration state using the sound of the welding arc, it generates vibration signals of different frequencies based on the determined penetration state. Specifically, when the weld penetration state is incomplete, the feedback vibration frequency is 200Hz; when the weld penetration state is complete, the feedback vibration frequency is 0Hz, meaning the vibration device does not vibrate; and when the weld penetration state is a collapsed molten pool, the feedback vibration frequency is 1000Hz. The computer then sends these vibration signals of different frequencies to a mask that features welding arc sound acquisition and welding quality vibration alerts.

[0077] The vibration signal receiving and control module 4 of the mask, which features welding arc sound acquisition and welding quality vibration alerts, receives vibration signals from the computer. It then analyzes the vibration signals, extracts the vibration frequencies, and transmits these frequencies to the vibration motor drive module 5. The vibration motor drive module 5 generates different PWM waves based on the different vibration frequencies to drive the vibration motor 3 at different speeds. This, in turn, causes the vibration imbalance block 2 to vibrate at varying amplitudes. Ultimately, the welder clearly feels the difference in vibration amplitude, allowing them to adjust their welding posture online based on the amplitude, preventing welding errors and improving welding skills while controlling welding quality. During this process, the vibration module is powered by the vibration power supply 7.

[0078] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

Claims

1. A welding mask with welding arc sound acquisition and welding quality vibration prompting functions, comprising a welding mask body (1), a welding mask glass (11), a vibration device, and a recording acquisition and transmission device (8), characterized in that: It also includes an acoustic multi-hole coupler (18). Both sides of the welding mask body (1) are provided with protrusions, and grooves are opened in the protrusions. The vibration device and the recording acquisition transmitter (8) are respectively installed in the grooves in the protrusions on both sides of the welding mask body (1). Two acoustic multi-hole couplers (18) are symmetrically arranged above the welding mask body (1). The acoustic multi-hole coupler (18) is connected to the groove for installing the recording acquisition transmitter (8) through the sound receiving structure. The acoustic multi-hole coupler (18) includes a first receiving layer, a second receiving layer and a support layer connected in sequence. The second receiving layer and the support layer are both cylindrical. A through sound transmission cavity is opened at the center of the second receiving layer and the support layer. The first receiving layer includes a frustum-shaped protrusion, a disk and a cylinder. The bottom surface of the frustum-shaped protrusion is mounted on the disk. The disk is mounted in the cylinder and is connected and fixed to the cylinder by a connecting rod. The side of the disk away from the frustum-shaped protrusion is connected to the sound transmission cavity at the center of the second receiving layer through a first receiving column. The second receiving layer is connected to the support layer through several second receiving columns. The sound transmission cavity at the center of the support layer is connected to the receiving structure. The sound receiving structure includes a main sound transmission cavity channel and two branch sound transmission cavity channels. The main sound transmission cavity channel is disposed on the welded mask body (1). One end of each of the two branch sound transmission cavity channels is connected to the sound transmission cavity at the center of the support layer in the two acoustic porous couplers (18). The other end of each of the two branch sound transmission cavity channels is connected to the main sound transmission cavity channel. The main sound transmission cavity channel is connected to the groove for installing the recording acquisition transmitter (8).

2. A face mask with welding arc sound acquisition and welding quality vibration indication functions according to claim 1, characterized in that, The groove for mounting the recording transmitter has symmetrical wavy grooves above it, and the sound receiving structure is connected to it.

3. A face mask with welding arc sound acquisition and welding quality vibration indication functions according to claim 1, characterized in that, The central axis of the frustum-shaped protrusion does not coincide with the central axis of the disk; The disc has several sound-receiving holes arranged in a rhombus and crescent shape. The disc also has two symmetrically formed horn-shaped slots. The first microphone column is cylindrical, and a through hole is provided at the center of the first microphone column. Several microphone holes are provided on the side of the first microphone column. The microphone holes on the first microphone column are perpendicular to the side of the first microphone column and are connected to the through hole at the center of the first microphone column. The through hole at the center of the first sound-receiving column is connected to the sound transmission cavity at the center of the second sound-receiving layer; The second receiving layer has several receiving holes arranged in a circular array; The second sound-receiving layer is connected to the support layer through a plurality of second sound-receiving columns arranged in a ring, and the second sound-receiving columns are cylindrical.

4. A face mask with welding arc sound acquisition and welding quality vibration indication functions according to claim 1, characterized in that, The branch sound transmission cavity channel is a cylindrical hollow pipe. The outer wall of the branch sound transmission cavity channel has external threads, and the inner wall of the sound transmission cavity at the center of the support layer has internal threads. The outer wall of the branch sound transmission cavity channel and the inner wall of the sound transmission cavity at the center of the support layer are fixedly connected by internal and external threads.

5. A face mask with welding arc sound acquisition and welding quality vibration indication functions according to claim 1, characterized in that, The vibration device includes a vibration signal receiving and control module (4), a vibration imbalance block (2), a vibration motor (3), a vibration power supply (7), and a vibration motor drive module (5). The protrusion used to install the vibration device has a total of five grooves. The upper and lower parts of the protrusion each have one groove, and the middle part of the protrusion has three grooves. The vibration signal receiving and control module (4) is installed in the upper groove of the protrusion. The vibration imbalance block (2), the vibration motor (3), and the vibration power supply (7) are respectively installed in the three grooves in the middle part of the protrusion. The vibration motor drive module (5) is installed in the lower groove of the protrusion. A vibrating housing (12) is installed on the protrusion where the vibration device is located.

6. A face mask with welding arc sound acquisition and welding quality vibration indication functions according to claim 5, characterized in that, The three grooves in the middle of the protrusion are labeled as groove I, groove II, and groove III from left to right. The upper groove of the protrusion is connected to groove II through hole a, groove II is connected to groove I through hole b, groove II is connected to groove III through hole c, and groove II is connected to the lower groove of the protrusion through hole d. The vibration unbalance block (2) is installed in groove I, the vibration motor (3) is installed in groove II, and the vibration power supply (7) is installed in groove III. The shaft of the vibration motor (3) passes through through hole b and is connected to the vibration unbalance block (2) with clearance fit. The vibration signal receiving and control module (4) is electrically connected to the vibration motor drive module (5) by passing through holes a and d in sequence with signal lines. The vibration motor drive module (5) is electrically connected to the vibration motor (3) by passing through hole d with signal lines. The vibration motor (3) is electrically connected to the vibration power supply (7) by passing through hole c with signal lines. The audio recording transmitter (8) is electrically connected to the computer, and the computer is electrically connected to the vibration signal receiving and control module (4).

7. A face mask with welding arc sound acquisition and welding quality vibration indication functions according to claim 5, characterized in that, The vibration signal receiving and control module (4) has circular holes at its four corners. The bottom of the groove at the top of the protrusion has four bases. A cylindrical boss is fixed on the base. The cylindrical boss passes through the circular holes at the four corners of the vibration signal receiving and control module (4). The bottom of the groove at the bottom of the protrusion has two ridges. The vibration motor drive module (5) is glued to the two ridges. The outer surface of the vibration power supply (7) is covered with damping material.

8. A face mask with welding arc sound acquisition and welding quality vibration indication functions according to claim 5, characterized in that, The vibrating housing (12) is fixedly connected to the protrusion used to install the vibrating device by a vibrating bolt (6).

9. A face mask with welding arc sound acquisition and welding quality vibration indication functions according to claim 1, characterized in that, It also includes a recording dust cover (16) that covers the groove on the protrusion for mounting the recording acquisition transmitter (8); the recording dust cover (16) is fixedly connected to the protrusion for mounting the recording acquisition transmitter (8) by dust cover bolts (17).

10. A face mask with welding arc sound acquisition and welding quality vibration indication functions according to claim 1, characterized in that, It also includes a mask strap (13); the mask strap (13) is fixedly connected to the welded mask body (1) by strap bolts (14).

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