Protective device for laser welding

Abstract

The utility model discloses a protective device for laser welding, which relates to the field of protective devices for welding, and comprises an operating platform, a back plate is mounted on the upper surface of the operating platform, a protective main body is mounted in front of the back plate, an air curtain cavity is formed in the middle of the protective main body, the air curtain cavity penetrates through the protective main body, and the air curtain cavity is of an inverted trapezoidal structure. A first side plate is installed on the surface of one side of the protection body, a receiving cavity is formed in one side of the protection body, an inclined air channel is formed in the receiving cavity, an air receiving opening is correspondingly formed in the direction of the other side of the inclined air channel, and the inclined air channel penetrates through the protection body. The protective gas can be used for forming an air curtain, air cooling is conducted on the welding face while the welding area is protected, meanwhile, welding fume generated during welding can be treated, and health and safety of workers are protected.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of protection device for welding, especially relates to a protection device for laser welding. BACKGROUND

[0002] Laser welding is a processing method for welding workpieces using laser beams, laser welding uses high-energy-density laser beams to heat the surface of the workpiece to above the melting point, melts the surface of the workpiece and forms a weld in the molten pool, laser welding has the characteristics of high precision and high speed, and is widely used in the automotive, aerospace, electronic, medical device, shipbuilding and other industries.

[0003] In the production process, inert gas is needed to protect the welding area to prevent oxidation and improve the welding quality, the principle is that: inert gas (such as argon) covers the welding area to prevent active gases such as oxygen and nitrogen in the air from entering the welding area, since inert gas does not chemically react with metal, it can effectively isolate air, and by using inert gas protection, the strength and corrosion resistance of the welding area can be significantly improved, ensuring the quality and reliability of the welding part.

[0004] At present, the protection device for laser welding is mostly loaded with a gas delivery pipe on the handheld laser welding gun, inert gas is delivered to the position of the handheld laser welding gun head through the gas delivery pipe, and inert gas is output at the same time of welding to form protection on the welding surface, but in actual use, when the welding surface is inclined or circular, the electromagnetic valve on the gas cylinder needs to be manually adjusted to change the flow of the protection gas, otherwise the flow is too large, the inert gas is easy to escape, and the continuous output consumes a lot of energy, causing waste of inert gas and increasing production cost, at the same time, laser welding produces a large amount of welding slag, and when the welding material contains low-melting-point impurities, a large amount of welding smoke appears, which seriously affects the working efficiency of laser welding and the health and safety of workers.

[0005] Therefore, it is necessary to provide a new protection device for laser welding to solve the above problems. UTILITY MODEL CONTENTS

[0006] The utility model aims at providing a protection device for laser welding to solve the problems of the traditional laser welding protection device in the background art, that is, the gas flow needs to be manually adjusted when encountering inclined or circular welding areas, and a large amount of welding smoke appears when the welding material contains low-melting-point impurities, which seriously affects the working efficiency of laser welding and the health and safety of workers.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a kind of including operation platform, the backboard is installed on the upper surface of the operation platform, and the protection main body is arranged at the front of the backboard;

[0008] The protection main body is provided with a wind curtain cavity in the middle position, the wind curtain cavity penetrates the protection main body, and the wind curtain cavity is a reverse trapezoidal structure.

[0009] The protection main body is provided with a receiving cavity in the one side position, an inclined air duct is arranged in the receiving cavity, an air receiving port is arranged in the other side direction of the inclined air duct, and the inclined air duct penetrates the protection main body.

[0010] The protection main body is provided with a second side plate on the other side surface, a hose hole is arranged on the second side plate, a hole is arranged on the second side plate, a filter screen is arranged on one side of the hole, an air inlet cavity is arranged in the other side position of the protection main body, a blower fan is arranged in the air inlet cavity, an air outlet port is arranged in the side direction of the blower fan, an exhaust cavity is arranged in front of the air inlet cavity, an exhaust blower fan is arranged in the exhaust cavity, and an exhaust port is arranged in the side direction of the exhaust blower fan.

[0011] The height of the exhaust port is lower than that of the air outlet port, the diameter of the exhaust port is greater than that of the air outlet port, and the air outlet port and the air receiving port are on the same horizontal line.

[0012] Preferably, the operation table is provided with an equipment base on the lower surface, a pull-out box is arranged on the one side surface of the equipment base, a handle is arranged on the one side surface of the pull-out box, a residue storage cavity is arranged in the pull-out box, a residue leakage plate is arranged on the upper surface of the operation table in the central position, a pipeline is arranged below the residue leakage plate, and the pipeline is connected with the residue storage cavity.

[0013] Preferably, vertical sliding grooves are arranged in the two side directions of the residue leakage plate, a moving block is slidably arranged in the vertical sliding grooves, a horizontal sliding groove is arranged on the moving block, and a fixed clamp is slidably arranged in the horizontal sliding groove.

[0014] Preferably, a second lead screw motor is arranged on the one side surface of the back plate, a second lead screw groove is arranged on the back plate, and a second lead screw is arranged in the second lead screw groove.

[0015] Preferably, a second movable block is arranged on the second lead screw, and a movable vertical plate is fixedly arranged on the front surface of the second movable block.

[0016] Preferably, a first lead screw motor is arranged on the upper surface of the movable vertical plate, a first lead screw groove is arranged on the movable vertical plate, a first lead screw is arranged in the first lead screw groove, a first movable block is arranged on the first lead screw, and a protection main body is arranged on the front surface of the first movable block.

[0017] Preferably, the output end of the first lead screw motor is in transmission connection with the first lead screw, and the output end of the second lead screw motor is in transmission connection with the second lead screw.

[0018] Preferably, the other side of the device base is provided with an inert gas bottle, an electromagnetic valve is installed on the inert gas bottle, a gas conveying hose is connected to the inert gas bottle, and the other end of the gas conveying hose is connected with the hose hole.

[0019] Preferably, a control switch is installed on the front surface of the operating table.

[0020] Preferably, support legs are installed on the lower surface of the device base.

[0021] The technical effect of the utility model lies in: the air outlet and the air inlet are arranged in the utility model, the inert gas forms a wind curtain through the air blower and the air inlet cavity, the protection layer formed by the wind curtain protects the welding area, the inert gas after use is sent out through the inclined air duct while the welding area is protected, the welding area is air-cooled to prevent the welding area from having pores and cracks, the utilization rate of the inert gas is maximized, the production cost is saved, and the problem that the traditional protection device needs to be manually adjusted in gas flow when encountering an inclined surface or a circular welding area is solved; the slag leakage plate and the smoke exhaust port are arranged in the utility model, the welding smoke generated during welding is sucked away through the smoke exhaust fan, and then is discharged through the filter screen and the hole, the welding smoke is sucked away from the source during welding, and the problem that the smoke generated during welding of low-melting-point impurities affects the health and safety of workers is solved. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a whole structure schematic view of the protection device for laser welding of the utility model;

[0023] Figure 2 It is a right view of the protection device for laser welding of the utility model;

[0024] Figure 3 It is a split view of the protection device for laser welding of the utility model;

[0025] Figure 4 It is a first perspective split view of the protection main body of the protection device for laser welding of the utility model;

[0026] Figure 5 It is a second perspective split view of the protection main body of the protection device for laser welding of the utility model;

[0027] Figure 6 It is a first perspective sectional view of the protection main body of the protection device for laser welding of the utility model;

[0028] Figure 7 It is a second perspective sectional view of the protection main body of the protection device for laser welding of the utility model;

[0029] In the figure: 1, operating table; 2, equipment base; 3, support leg; 4, back plate; 5, No. 1 lead screw motor; 6, No. 2 lead screw motor; 7, protection main body; 8, slag leakage plate; 9, control switch; 10, pull-out box; 11, handle; 12, inert gas bottle; 13, electromagnetic valve; 14, gas conveying hose; 15, movable vertical plate; 16, No. 1 lead screw groove; 17, No. 1 lead screw; 18, No. 2 lead screw groove; 19, No. 2 lead screw; 20, fixed clamp; 21, vertical sliding groove; 22, moving block; 23, horizontal sliding groove; 24, No. 2 movable block; 25, No. 1 movable block; 26, slag storage cavity; 27, No. 1 side plate; 28, air curtain cavity; 29, receiving cavity; 30, inclined air duct; 31, hose hole; 32, No. 2 side plate; 33, hole; 34, filter screen; 35, air inlet cavity; 36, air blower; 37, smoke exhaust cavity; 38, smoke exhaust fan; 39, air receiving port; 40, air outlet; 41, smoke exhaust port. DETAILED DESCRIPTION

[0030] As Figures 1-7 shown, the utility model provides a protection device for laser welding, including operating table 1, operating table 1 upper surface installs back plate 4, and back plate 4 front is equipped with protection main body 7.

[0031] Protection main body 7 middle position is equipped with air curtain cavity 28, and air curtain cavity 28 penetrates protection main body 7, and air curtain cavity 28 is inverted trapezoidal structure, and air curtain cavity 28 is wide at top and narrow at bottom, and the purpose of wide design at top is to have more operating space when using handheld laser welding gun, and the purpose of narrow at bottom is to better let air curtain form protective layer.

[0032] Protection main body 7 one side surface is installed with No. 1 side plate 27, and No. 1 side plate 27 is installed with protection main body 7 one side surface by screw, is detachable design, and protection main body 7 one side position is equipped with receiving cavity 29, and receiving cavity 29 is equipped with inclined air duct 30, and inclined air duct 30 other side direction is equipped with air receiving port 39, and inclined air duct 30 penetrates protection main body 7.

[0033] The other side surface of the protection body 7 is provided with a second side plate 32, which is detachably installed on the other side surface of the protection body 7 by screws. The second side plate 32 is provided with a hose hole 31, and a sealing element is arranged on the hose hole 31. The purpose is to provide sealing performance, so that the inert gas is gathered in the air inlet cavity 35. The second side plate 32 is provided with a hole 33, and a filter screen 34 is installed on one side of the hole 33. The filter screen 34 is an activated carbon filter screen, which has excellent gas dynamics performance and high adsorption efficiency. The other side of the protection body 7 is provided with an air inlet cavity 35, and a blower fan 36 is installed in the air inlet cavity 35. The air outlet 40 is arranged on one side of the blower fan 36, and the air outlet 40 is connected with the output end of the blower fan 36. The air inlet cavity 35 is provided with an exhaust cavity 37 in front of the air inlet cavity 35, and an exhaust fan 38 is installed in the exhaust cavity 37. The exhaust port 41 is arranged on one side of the exhaust fan 38, and the exhaust port 41 is connected with the input end of the exhaust fan 38.

[0034] The height of the exhaust port 41 is lower than that of the air outlet 40, and the diameter of the exhaust port 41 is greater than that of the air outlet 40. The air outlet 40 and the air inlet 39 are on the same horizontal line.

[0035] Further, the equipment base 2 is installed on the lower surface of the operation table 1. The pull-out box 10 is installed on one side surface of the equipment base 2. The pull handle 11 is installed on one side surface of the pull-out box 10. The pull-out box 10 is provided with a residue storage cavity 26. The residue discharge plate 8 is installed on the upper surface of the operation table 1 at the center position. The pipeline is installed below the residue discharge plate 8, and the pipeline is connected with the residue storage cavity 26.

[0036] Further, the vertical sliding grooves 21 are arranged on both sides of the residue discharge plate 8. The moving block 22 is slidably installed on the vertical sliding grooves 21. The horizontal sliding groove 23 is arranged on the moving block 22. The fixed clamp 20 is slidably installed on the horizontal sliding groove 23.

[0037] Further, the second screw rod motor 6 is installed on one side surface of the back plate 4. The second screw rod groove 18 is arranged on the back plate 4. The second screw rod 19 is installed in the second screw rod groove 18.

[0038] Further, the second movable block 24 is installed on the second screw rod 19. The movable vertical plate 15 is fixedly installed on the front surface of the second movable block 24.

[0039] Further, the first screw rod motor 5 is installed on the upper surface of the movable vertical plate 15. The first screw rod groove 16 is arranged on the movable vertical plate 15. The first screw rod 17 is installed in the first screw rod groove 16. The first movable block 25 is installed on the first screw rod 17. The protection body 7 is installed on the front surface of the first movable block 25.

[0040] Further, the output end of the first screw rod motor 5 is in transmission connection with the first screw rod 17. The output end of the second screw rod motor 6 is in transmission connection with the second screw rod 19.

[0041] Further, the device base 2 is provided with an inert gas bottle 12 on the other side, and an electromagnetic valve 13 is installed on the inert gas bottle 12, and a gas conveying hose 14 is connected to the inert gas bottle 12, and the other end of the gas conveying hose 14 is connected to the hose hole 31.

[0042] Further, the control switch 9 is installed on the front surface of the operating table 1 near one side.

[0043] Further, the support leg 3 is installed on the lower surface of the device base 2.

[0044] It should be noted that the utility model is a protection device for laser welding, when in use, the workpiece needs to be clamped by the fixing clamp 20, then the workpiece is pushed into the lower part of the protection main body 7 through the vertical sliding groove 21, and finally the workpiece is welded by the handheld laser welding gun, before welding, the air blower 36, the smoke exhaust fan 38 and the electromagnetic valve 13 are opened by the control switch 9, the protection gas in the inert gas bottle 12 is conveyed into the air inlet cavity 35 by controlling the electromagnetic valve 13, the protection gas is blown out from the air outlet 40 by the air blower 36 in the air inlet cavity 35, and after passing through the air curtain cavity 28, the protection gas is sent into the air receiving port 39, forming an air curtain composed of protection gas, when welding, the air curtain can protect the welding area from the influence of active gases such as oxygen and nitrogen, and the used active gas is sent into the inclined air duct 30 through the air receiving port 39, thereby the welding area can be air-cooled, so as to reduce the generation of pores and cracks during welding, improve the product quality, maximize the utilization rate of the protection gas and save the production cost.

[0045] Considering that low-melting-point impurities will cause welding smoke during welding, the welding smoke generated during welding can be effectively sucked away from the source by the smoke exhaust fan 38 in the smoke exhaust cavity 37, and then discharged from the hole 33 after passing through the filter screen 34, so as to ensure the health and safety of the workers during welding, and the welding slag after welding can directly fall into the slag storage cavity 26 through the slag leakage plate 8 and the pipeline, so as to facilitate unified collection and treatment.

Claims

1. A protective device for laser welding, characterized by: The operation platform (1) is provided with a back plate (4) on the upper surface, a protection body (7) is arranged in front of the back plate (4), a wind curtain cavity (28) is arranged in the middle of the protection body (7), the wind curtain cavity (28) penetrates the protection body (7) and is in an inverted trapezoidal structure, a first side plate (27) is arranged on one side surface of the protection body (7), a receiving cavity (29) is arranged on one side of the protection body (7), an inclined air duct (30) is arranged in the receiving cavity (29), a wind receiving port (39) is arranged on the other side of the inclined air duct (30), the inclined air duct (30) penetrates the protection body (7), a second side plate (32) is arranged on the other side surface of the protection body (7), a hose hole (31) is arranged on the second side plate (32), a hole (33) is arranged on the second side plate (32), a filter screen (34) is arranged on one side of the hole (33), an air inlet cavity (35) is arranged on the other side of the protection body (7), a blower fan (36) is arranged in the air inlet cavity (35), an air outlet port (40) is arranged on one side of the blower fan (36), a smoke exhaust cavity (37) is arranged in front of the air inlet cavity (35), a smoke exhaust fan (38) is arranged in the smoke exhaust cavity (37), and a smoke exhaust port (41) is arranged on one side of the smoke exhaust fan (38); the height of the smoke exhaust port (41) is lower than that of the air outlet port (40), the diameter of the smoke exhaust port (41) is larger than that of the air outlet port (40), and the air outlet port (40) and the wind receiving port (39) are on the same horizontal line.

2. The protective device for laser welding according to claim 1, characterized in that: An equipment base (2) is arranged on the lower surface of the operation platform (1), a pull-out box (10) is arranged on one side surface of the equipment base (2), a handle (11) is arranged on one side surface of the pull-out box (10), the pull-out box (10) is provided with a residue storage cavity (26), a residue leakage plate (8) is arranged on the upper surface of the operation platform (1) and is arranged at the center position, a pipeline is arranged below the residue leakage plate (8) and is connected with the residue storage cavity (26).

3. The protective device for laser welding according to claim 2, characterized in that: Vertical sliding grooves (21) are arranged on both sides of the residue leakage plate (8), moving blocks (22) are slidably arranged in the vertical sliding grooves (21), horizontal sliding grooves (23) are arranged on the moving blocks (22), and fixed clamps (20) are slidably arranged in the horizontal sliding grooves (23).

4. The protective device for laser welding according to claim 3, characterized in that: A second lead screw motor (6) is arranged on one side surface of the back plate (4), a second lead screw groove (18) is arranged on the back plate (4), and a second lead screw (19) is arranged in the second lead screw groove (18).

5. The protective device for laser welding according to claim 4, characterized in that: A second movable block (24) is arranged on the second lead screw (19), and a movable vertical plate (15) is fixedly arranged on the front surface of the second movable block (24).

6. The protective device for laser welding according to claim 5, characterized in that: The upper surface of the movable vertical plate (15) is provided with a first lead screw motor (5), a first lead screw groove (16) is formed in the movable vertical plate (15), a first lead screw (17) is installed in the first lead screw groove (16), a first movable block (25) is installed on the first lead screw (17), and a protection body (7) is installed on the front surface of the first movable block (25).

7. The protective device for laser welding according to claim 6, characterized in that: The output end of the first lead screw motor (5) is in driving connection with the first lead screw (17), and the output end of the second lead screw motor (6) is in driving connection with the second lead screw (19).

8. The protective device for laser welding according to claim 7, characterized in that: An inert gas bottle (12) is arranged on the other side of the equipment base (2), an electromagnetic valve (13) is installed on the inert gas bottle (12), a gas conveying hose (14) is connected to the inert gas bottle (12), and the other end of the gas conveying hose (14) is connected with a hose hole (31).

9. The protective device for laser welding according to claim 8, characterized in that: A control switch (9) is installed on the front surface of the operating table (1) near one side.

10. The protective device for laser welding according to claim 9, characterized in that: Supporting legs (3) are installed on the lower surface of the equipment base (2).

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