Welding air pressure stabilizing device for vehicle body welding

Abstract

The invention relates to a welding air pressure stabilizing device for vehicle body welding, which belongs to the technical field of welding protection and comprises a welding gun, a welding head is arranged on the lower surface of the welding gun, an air pressure stabilizing mounting cover is arranged on the outer surface of the welding gun, and a flow guide seat is arranged on the outer surface of the air pressure stabilizing mounting cover. The pressure relief mechanism is used for relieving pressure of high-pressure shielding gas, the radar sensor is used for detecting the position of the through groove, when the pressure of the shielding gas is too low, the red light is turned on, the buzzer makes buzzing sound to raise workers, the stored shielding gas is supplemented, the conveyed shielding gas is pressurized, and the working efficiency is improved. And through cooperation of a transparent extension frame and a spring B, a welding part is protected, the influence of the surrounding environment on the welding process is avoided, and the stability in the shielding gas conveying process is kept, so that the overall quality during welding is improved, and the using effect of welding equipment is improved.

Description

Technical Field

[0001] The invention relates to the technical field of welding protection, and in particular to a welding air pressure stabilizing device for vehicle body welding. Background Art

[0002] The laser welding machine uses inert gas to protect the molten pool during the welding process to ensure that the welding material will not be gasified during the welding process, thereby ensuring the product quality. The current protective gas generally uses the following three types: helium, nitrogen and argon. The three gases commonly used in the market are all to ensure the quality of products after laser welding;

[0003] Traditionally, in the process of car body welding, shielding gas is required during laser welding. The use of shielding gas has a positive effect. It can effectively protect the weld molten pool and reduce oxidation, or even avoid oxidation. However, in the welding process, the pressure needs to be kept stable during the shielding gas delivery process to avoid welding quality problems caused by air pressure fluctuations, resulting in defects such as poor weld formation and porosity. Therefore, it is necessary to design a welding air pressure stabilization device for car body welding. Summary of the invention

[0004] The object of the present invention is to provide a welding gas pressure stabilizing device for vehicle body welding, so as to solve the problem of maintaining pressure stability during shielding gas delivery in the existing welding process mentioned in the background art.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a welding gas pressure stabilizing device for car body welding, comprising a welding gun, a welding head is arranged on the lower surface of the welding gun, a gas pressure stabilizing mounting cover is arranged on the outer surface of the welding gun, and a flow guide seat is arranged on the outer surface of the gas pressure stabilizing mounting cover, pressure relief sleeves and protective covers are arranged on both sides of the outer surface of the gas pressure stabilizing mounting cover, the pressure relief sleeve is located between the protective cover and the flow guide seat, the gas pressure stabilizing mounting cover is located on the outer side of the welding head, a flow guide groove is arranged inside the gas pressure stabilizing mounting cover, and a pressure relief groove is arranged on the inner wall of the flow guide groove away from the welding head, a receiving groove is arranged inside the pressure relief sleeve, and the receiving groove and the inner wall of the pressure relief groove are connected to each other. The two parts are connected, and a pressure relief mechanism is arranged inside the pressure relief sleeve; the pressure relief mechanism includes a filter screen arranged on one side of the inner wall of the accommodating groove, and the side of the filter screen away from the air pressure stabilizing mounting cover is rotatably connected with a scraper, and a threaded hole is arranged inside the scraper, and the internal thread of the threaded hole is connected with a threaded rod, and the threaded rod extends to the inside of the accommodating groove, and the inner wall of the accommodating groove is slidably connected with a mounting plate at one end close to the air pressure stabilizing mounting cover, and one side of the mounting plate is fixedly connected to one side of the threaded rod, a spring C is fixed on the inner wall of the accommodating groove, and the other end of the spring C is fixedly connected to the mounting plate, and a sealing block is arranged on the side of the mounting plate away from the spring C, and the sealing block is engaged with the pressure relief groove.

[0006] Preferably, the pressure relief sleeve is arranged in a rectangular frame shape, the pressure relief mechanism is arranged in a cross shape with respect to the air pressure stabilizing mounting cover, the spring C is always in a compressed state, and the size of the blocking block is adapted to the size of the pressure relief groove.

[0007] Preferably, connecting pipes and guide pipes are respectively provided on both sides of the guide seat, an annular groove is provided inside the air pressure stabilizing mounting cover, and the annular grooves are connected to the inside of the guide grooves, and the guide seat is connected to the inside of the annular grooves through the guide pipes.

[0008] Preferably, a diverter seat is fixed inside the guide seat, a receiving seat is slidably connected inside the guide seat, and connecting blocks are fixed on both sides of the receiving seat, two groups of connecting grooves are opened inside the guide seat, and springs A are fixed inside the two groups of connecting grooves, the other ends of the two groups of springs A are fixedly connected to the lower surface of the connecting blocks, and the two groups of connecting blocks are slidably connected to the inner walls of the two groups of connecting grooves respectively, four groups of diverter grooves are opened inside the diverter seat, a through groove is opened inside the receiving seat, and the receiving seat extends into the interior of the guide pipe.

[0009] Preferably, a sensing groove is provided on the inner wall of one group of the connecting grooves, and a radar sensor is arranged inside the sensing groove, and a buzzer and a red light are respectively arranged at two ends of the guide seat away from the air pressure stabilizing mounting cover.

[0010] Preferably, the diameter of the through groove is smaller than the distance between the two symmetrical groups of flow grooves, and a guide block is fixed on the upper surface of the diverter seat, and the cross-section of the guide block is arranged in an inclined shape.

[0011] Preferably, a movable groove is provided on the inner wall of the protective cover, and a spring B is fixed to the top of the inner wall of the movable groove, a movable block is fixed to the bottom of the spring B, the movable block is slidably connected to the movable groove, a transparent extension frame is provided inside the movable groove, and the outer side of the transparent extension frame is fixedly connected to one side of the movable block.

[0012] Preferably, four groups of the moving grooves, springs B and moving blocks are provided, and the moving grooves, springs B and moving blocks are arranged in a cross shape on the outside of the transparent extension frame, and the outer surface of the transparent extension frame is tightly fitted with the inner wall of the protective cover.

[0013] Preferably, the inner wall of the air pressure stabilizing mounting cover is tightly fitted with the outer surface of the welding gun, the upper surface of the air pressure stabilizing mounting cover is provided with four groups of blocks, the lower surface of the welding gun is provided with four groups of card slots, and the four groups of card slots are all engaged and connected with the four groups of card blocks, and the sizes of the two groups of card slots are adapted to the sizes of the four groups of card blocks.

[0014] Preferably, the air pressure stabilizing mounting cover is provided with two groups of through holes inside, the outer surface of the welding gun is provided with two groups of screw holes, and the insides of the two groups of screw holes are threadedly connected with two groups of bolts, and the bolts all pass through the insides of the through holes.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The high-pressure shielding gas is depressurized by the pressure relief mechanism, and the position of the through slot is detected by the radar sensor. When the shielding gas pressure is too low, the red light turns on and the buzzer sounds to alert the staff to increase the pressure, so as to replenish the stored shielding gas and pressurize the delivered shielding gas. In addition, the transparent extension frame cooperates with the spring B to protect the welding part and avoid the influence of the surrounding environment on the welding process. By keeping the shielding gas stable during delivery, the overall quality of welding is improved and the use effect of the welding equipment is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0019] Figure 2 It is a schematic diagram of the front cross-section structure of the present invention;

[0020] Figure 3 It is a schematic diagram of the three-dimensional structure of the air pressure stabilizing mounting cover of the present invention;

[0021] Figure 4 It is a schematic diagram of the three-dimensional structure of the transparent extension frame distribution of the present invention;

[0022] Figure 5 It is a schematic diagram of the three-dimensional structure of the pressure relief mechanism distribution of the present invention;

[0023] Figure 6 It is a schematic diagram of the three-dimensional structure of the guide seat of the present invention;

[0024] Figure 7 It is a schematic diagram of the three-dimensional structure of the distribution of the diverter seat of the present invention.

[0025] Explanation of reference numerals in the figures: 1, welding gun; 11, welding head; 12, card slot; 2, air pressure stabilizing mounting cover; 21, through hole; 22, guide groove; 23, pressure relief groove; 24, annular groove; 25, card block; 3, guide seat; 31, guide pipe; 32, buzzer; 33, red light; 34, connecting pipe; 35, diverter seat; 351, guide block; 352, diverter groove; 36, receiving seat; 361, through groove; 362. Connecting block; 37. Connecting groove; 371. Radar sensor; 372. Spring A; 4. Pressure relief sleeve; 41. Accommodating groove; 5. Protective cover; 51. Moving groove; 52. Spring B; 53. Moving block; 54. Transparent extension frame; 6. Pressure relief mechanism; 61. Filter; 62. Scraper; 63. Threaded hole; 64. Threaded rod; 65. Mounting plate; 651. Sealing block; 66. Spring C; 7. Bolt. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the invention to clearly and completely describe the technical solutions in the embodiments of the invention. Obviously, the described embodiments are only part of the embodiments of the invention, not all of the embodiments. Based on the embodiments of the invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the invention.

[0027] Embodiment 1

[0028] In order to solve the problem of maintaining stable pressure during the shielding gas delivery process in the existing welding process in the prior art, the following solution is disclosed, specifically: Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown:

[0029] A welding air pressure stabilizing device for body welding comprises a welding gun 1, a welding head 11 is arranged on the lower surface of the welding gun 1, an air pressure stabilizing mounting cover 2 is arranged on the outer surface of the welding gun 1, and a flow guide seat 3 is arranged on the outer surface of the air pressure stabilizing mounting cover 2, pressure relief sleeves 4 and protective covers 5 are arranged on both sides of the outer surface of the air pressure stabilizing mounting cover 2, the pressure relief sleeve 4 is located between the protective cover 5 and the flow guide seat 3, the air pressure stabilizing mounting cover 2 is located on the outer side of the welding head 11, a flow guide groove 22 is arranged inside the air pressure stabilizing mounting cover 2, and a pressure relief groove 23 is arranged on the inner wall of the flow guide groove 22 away from the welding head 11, a receiving groove 41 is arranged inside the pressure relief sleeve 4, and the receiving groove 41 is connected with the inside of the pressure relief groove 23, and a pressure relief mechanism 6 is arranged inside the pressure relief sleeve 4 The pressure relief mechanism 6 includes a filter screen 61 arranged on one side of the inner wall of the accommodating groove 41, and the scraper 62 is rotatably connected to the side of the filter screen 61 away from the air pressure stabilizing mounting cover 2, and a threaded hole 63 is arranged inside the scraper 62, and the threaded hole 63 is threadedly connected to a threaded rod 64 inside, and the threaded rod 64 extends to the inside of the accommodating groove 41, and a mounting plate 65 is slidably connected to one end of the inner wall of the accommodating groove 41 close to the air pressure stabilizing mounting cover 2, and one side of the mounting plate 65 is fixedly connected to one side of the threaded rod 64, a spring C66 is fixed on the inner wall of the accommodating groove 41, and the other end of the spring C66 is fixedly connected to the mounting plate 65, and a blocking block 651 is arranged on the side of the mounting plate 65 away from the spring C66, and the blocking block 651 is engaged and connected with the pressure relief groove 23.

[0030] The pressure relief sleeve 4 is arranged in a rectangular frame shape, and the pressure relief mechanism 6 is arranged in a cross shape with respect to the air pressure stabilizing mounting cover 2. The spring C66 is always in a compressed state. The size of the blocking block 651 is adapted to the size of the pressure relief groove 23. A connecting pipe 34 and a guide pipe 31 are respectively arranged on both sides of the guide seat 3. An annular groove 24 is arranged inside the air pressure stabilizing mounting cover 2, and the annular groove 24 is connected to the inside of the guide groove 22. The guide seat 3 is connected to the inside of the annular groove 24 through the guide pipe 31. A diverter seat 35 is fixed inside the guide seat 3. The guide seat 3 is slidably connected to the receiving seat 36, and connecting blocks 362 are fixed on both sides of the receiving seat 36. Two groups of connecting grooves 37 are opened inside the guide seat 3, and springs A372 are fixed inside the two groups of connecting grooves 37. The other ends of the two groups of springs A372 are fixedly connected to the lower surface of the connecting blocks 362. The two groups of connecting blocks 362 are slidably connected to the inner walls of the two groups of connecting grooves 37 respectively. Four groups of flow slots 352 are opened inside the diverter seat 35, and a through groove 361 is opened inside the receiving seat 36. The guide seat 3 6 extends into the interior of the guide pipe 31, one of the inner walls of the connection grooves 37 is provided with a sensing groove, and a radar sensor 371 is arranged inside the sensing groove, a buzzer 32 and a red light 33 are arranged at both ends of the guide seat 3 away from the air pressure stabilization mounting cover 2, the diameter of the through groove 361 is smaller than the distance between the two symmetrical groups of flow grooves 352, a guide block 351 is fixed on the upper surface of the diverter seat 35, and the cross-section of the guide block 351 is arranged in an inclined shape, and a movable groove 51 is arranged on the inner wall of the protective cover 5, and the movable groove 51 is provided with a red light 33. A spring B52 is fixed at the top of the wall, and a moving block 53 is fixed at the bottom of the spring B52. The moving block 53 is slidably connected to the moving groove 51. A transparent extension frame 54 is arranged inside the moving groove 51, and the outer side of the transparent extension frame 54 is fixedly connected to one side of the moving block 53. The moving groove 51, the spring B52 and the moving block 53 are each provided with four groups. The moving groove 51, the spring B52 and the moving block 53 are arranged in a cross shape on the outer side of the transparent extension frame 54, and the outer surface of the transparent extension frame 54 is tightly fitted with the inner wall of the protective cover 5.

[0031] In this embodiment, when it is necessary to use the air pressure stabilizing device, protective gas is transported to the interior of the connecting pipe 34. Under the guiding action of the guide block 351, the transmission diverter groove 352 compresses the guide seat 36. The protective gas passes through the through groove 361 and the guide pipe 31 and finally enters the output of the guide groove 22 to protect the welding point. When the air pressure at the output of the guide groove 22 is too high, the high-pressure protective gas moves upward to squeeze the blocking block 651, so that the blocking block 651 is separated from the pressure relief groove 23 to achieve rapid pressure relief. During the separation process of the blocking block 651 from the pressure relief groove 23, the scraper 62 is rotatably connected to the filter screen 61, so that the scraper 62 rotates under the action of the threaded connection to filter the filter screen. The net 61 is cleaned to prevent the gas containing impurities from entering the interior of the guide groove 22 and affecting the use effect of the shielding gas after the pressure relief is completed. When the air pressure is too low, the shielding gas pushes the receiving seat 36 to move downward. When the radar sensor 371 detects that the distance of the through groove 361 is consistent with the preset distance, the red light 33 is on, and the buzzer 32 sounds a buzzer to alert the staff to replenish the stored shielding gas and pressurize the delivered shielding gas. In addition, the transparent extension frame 54 cooperates with the spring B52 to protect the welding part and avoid the influence of the surrounding environment on the welding process. By keeping the shielding gas stable during delivery, the overall quality of welding is improved and the use effect of the welding equipment is improved.

[0032] Embodiment 2

[0033] In order to improve the flexibility of the welding gas pressure stabilizing device when used as a whole, the following scheme is disclosed, specifically: Figure 1 , Figure 2 and Figure 3 As shown:

[0034] The inner wall of the air pressure stabilizing mounting cover 2 fits tightly with the outer surface of the welding gun 1, the upper surface of the air pressure stabilizing mounting cover 2 is provided with four groups of blocks 25, the lower surface of the welding gun 1 is provided with four groups of slots 12, and the four groups of slots 12 are all engaged and connected with the four groups of blocks 25, the sizes of the two groups of slots 12 are adapted to the sizes of the four groups of blocks 25, two groups of through holes 21 are provided inside the air pressure stabilizing mounting cover 2, the outer surface of the welding gun 1 is provided with two groups of screw holes, and the insides of the two groups of screw holes are threadedly connected with two groups of bolts 7, and the bolts 7 pass through the insides of the through holes 21.

[0035] In this embodiment, the air pressure stabilizing mounting cover 2 is separated from the welding gun 1 as a whole by separating the bolt 7 from the internal screw hole of the welding gun 1 and cooperating with the separation of the slot 12 and the block 25, thereby facilitating the connection and separation of the welding device and the air pressure stabilizing mounting cover 2 and improving the flexibility of the overall use of the welding air pressure stabilizing device.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A welding air pressure stabilizing device for vehicle body welding, comprising a welding gun (1), characterized in that: The lower surface of the welding gun (1) is provided with a welding head (11), the outer surface of the welding gun (1) is provided with an air pressure stabilizing mounting cover (2), and the outer surface of the air pressure stabilizing mounting cover (2) is provided with a flow guide seat (3), and pressure relief sleeves (4) and protective covers (5) are provided on both sides of the outer surface of the air pressure stabilizing mounting cover (2), and the pressure relief sleeve (4) is located between the protective cover (5) and the flow guide seat (3), and the air pressure stabilizing mounting cover (2) is located on the outer side of the welding head (11), and a flow guide groove (22) is provided inside the air pressure stabilizing mounting cover (2), and a pressure relief groove (23) is provided on the inner wall of the flow guide groove (22) away from the welding head (11), and a receiving groove (41) is provided inside the pressure relief sleeve (4), and the receiving groove (41) is connected with the inside of the pressure relief groove (23), and a pressure relief mechanism (6) is provided inside the pressure relief sleeve (4); The pressure relief mechanism (6) comprises a filter screen (61) arranged on one side of the inner wall of the receiving groove (41); a scraper (62) is rotatably connected to the side of the filter screen (61) away from the air pressure stabilizing mounting cover (2); a threaded hole (63) is arranged inside the scraper (62); a threaded rod (64) is threadedly connected to the inside of the threaded hole (63); and the threaded rod (64) extends to the inside of the receiving groove (41); a mounting plate (65) is slidably connected to one end of the inner wall of the receiving groove (41) close to the air pressure stabilizing mounting cover (2); and one side of the mounting plate (65) is fixedly connected to one side of the threaded rod (64); a spring C (66) is fixed on the inner wall of the receiving groove (41); and the other end of the spring C (66) is fixedly connected to the mounting plate (65); a blocking block (651) is arranged on the side of the mounting plate (65) away from the spring C (66); and the blocking block (651) is snap-fitted and connected to the pressure relief groove (23).

2. The welding air pressure stabilizing device for vehicle body welding according to claim 1, characterized in that: The pressure relief sleeve (4) is arranged in a rectangular frame shape, the pressure relief mechanism (6) is arranged in a cross shape with respect to the air pressure stabilizing mounting cover (2), the spring C (66) is always in a compressed state, and the size of the blocking block (651) is adapted to the size of the pressure relief groove (23).

3. The welding air pressure stabilizing device for vehicle body welding according to claim 1, characterized in that: A connecting pipe (34) and a flow guide pipe (31) are respectively provided on both sides of the flow guide seat (3); an annular groove (24) is provided inside the air pressure stabilizing mounting cover (2); and the annular groove (24) is connected to the inside of the flow guide groove (22); and the flow guide seat (3) is connected to the inside of the annular groove (24) via the flow guide pipe (31).

4. The welding air pressure stabilizing device for vehicle body welding according to claim 1, characterized in that: A diverter seat (35) is fixed inside the flow guide seat (3), a receiving seat (36) is slidably connected inside the flow guide seat (3), and connecting blocks (362) are fixed on both sides of the receiving seat (36), two groups of connecting grooves (37) are opened inside the flow guide seat (3), and springs A (372) are fixed inside the two groups of connecting grooves (37), the other ends of the two groups of springs A (372) are fixedly connected to the lower surface of the connecting blocks (362), and the two groups of connecting blocks (362) are respectively slidably connected to the inner walls of the two groups of connecting grooves (37), four groups of diverter slots (352) are opened inside the flow diverter seat (35), a through slot (361) is opened inside the receiving seat (36), and the receiving seat (36) extends into the interior of the flow guide pipe (31).

5. The welding air pressure stabilizing device for vehicle body welding according to claim 4, characterized in that: A sensing groove is provided on the inner wall of one group of the connection grooves (37), and a radar sensor (371) is arranged inside the sensing groove. A buzzer (32) and a red light (33) are respectively arranged at two ends of the guide seat (3) away from the air pressure stabilizing mounting cover (2).

6. The welding air pressure stabilizing device for vehicle body welding according to claim 4, characterized in that: The diameter of the through groove (361) is smaller than the distance between the two symmetrical groups of flow grooves (352). A guide block (351) is fixed on the upper surface of the flow diverter seat (35), and the cross-section of the guide block (351) is arranged in an inclined shape.

7. The welding air pressure stabilizing device for vehicle body welding according to claim 1, characterized in that: The inner wall of the protective cover (5) is provided with a movable groove (51), and a spring B (52) is fixed to the top of the inner wall of the movable groove (51), and a movable block (53) is fixed to the bottom of the spring B (52), and the movable block (53) is slidably connected to the movable groove (51), and a transparent extension frame (54) is provided inside the movable groove (51), and the outer side of the transparent extension frame (54) is fixedly connected to one side of the movable block (53).

8. The welding air pressure stabilizing device for vehicle body welding according to claim 7, characterized in that: The movable groove (51), the spring B (52) and the movable block (53) are each provided in four groups. The movable groove (51), the spring B (52) and the movable block (53) are arranged in a cross shape on the outside of the transparent extension frame (54). The outer surface of the transparent extension frame (54) is tightly fitted with the inner wall of the protective cover (5).

9. The welding air pressure stabilizing device for vehicle body welding according to claim 1, characterized in that: The inner wall of the air pressure stabilizing mounting cover (2) is tightly fitted with the outer surface of the welding gun (1); the upper surface of the air pressure stabilizing mounting cover (2) is provided with four groups of card blocks (25); the lower surface of the welding gun (1) is provided with four groups of card slots (12); and the four groups of card slots (12) are all engaged and connected with the four groups of card blocks (25); the sizes of the two groups of card slots (12) are adapted to the sizes of the four groups of card blocks (25).

10. The welding air pressure stabilizing device for vehicle body welding according to claim 1, characterized in that: The air pressure stabilizing mounting cover (2) is provided with two groups of through holes (21) inside, the outer surface of the welding gun (1) is provided with two groups of screw holes, and the insides of the two groups of screw holes are both threadedly connected with two groups of bolts (7), and the bolts (7) all pass through the insides of the through holes (21).

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