Laser polishing device for welding seam of oil tank

Abstract

The invention relates to the technical field of equipment treatment, in particular to an oil tank welding seam laser polishing device which comprises a laser transmitter, an adjusting mechanism, a side edge rust removal mechanism and a bottom rust removal mechanism. An operator firstly places a laser transmitter above an oil tank to polish a welding seam, after polishing is completed, the laser transmitter touches an adjusting mechanism, a light path is refracted to the side wall of the oil tank through a side edge rust removal mechanism to be polished, and after the side wall is polished, the bottom continues to be polished through a bottom rust removal mechanism; the equipment is simple in structure, different oil tank positions are effectively polished through a simple mechanical structure, the investment of laser equipment is effectively reduced, meanwhile, the phenomenon that other objects are damaged by bottom laser emission is avoided, good practicability and economical efficiency are achieved, and popularization and use of the equipment are facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of equipment processing, and in particular to a laser grinding device for a weld seam of an oil tank. Background Art

[0002] Laser grinding mainly utilizes the heat collection performance of laser to heat the metal surface and then grind away the fragments; in the process of tank welding, usually multiple groups of lasers are used to grind the side, top and bottom directly, but due to the high price of laser transmitters, it is not conducive to the production of such devices. At the same time, the laser transmitter at the bottom of the direct shot is easily affected by the falling broken metal fragments, which can easily block the light path and cause lens scratches to affect the implementation effect. If the light path refraction is used to change the light, the energy loss in the refraction process will greatly reduce the end processing effect. Summary of the invention

[0003] In order to solve the above-mentioned problems existing in the prior art, the purpose of the present invention is to provide a tank weld laser grinding device with a simple structure and low cost, which can effectively prevent the broken metal fragments at the bottom of the tank from blocking the optical path of the laser transmitter and effectively solve the energy loss of laser processing after refraction.

[0004] The technical solution adopted by the present invention is: a fuel tank weld seam laser grinding device, comprising a laser emitter, the laser emitter is located above the fuel tank, and the fuel tank is supported by a support;

[0005] An adjustment mechanism, the adjustment mechanism comprising a lifting member and a side rust removal mechanism, the side rust removal mechanism is used to refract the light source of the laser transmitter to the side of the oil tank, and the lifting member is used to adjust the relative height position of the side rust removal mechanism to the bottom of the oil tank;

[0006] The bottom rust removal mechanism comprises a second reflective plate, the reflective surface of the second reflective plate faces the bottom of the oil tank, and an angle adjustment member is provided on the second reflective plate. After the reflected light source of the side rust removal mechanism is directly irradiated onto the second reflective plate, the angle adjustment member adjusts the direct position to the bottom of the oil tank.

[0007] In one embodiment, the lifting member includes a main support plate, which is arranged on the side of the oil tank. A movable groove is provided in the middle of the main support plate, and a lifting block is also provided in the movable groove. A rotating threaded rod is also provided in the movable groove. The rotating threaded rod passes through and is rotatably connected to the lifting block. A sliding block is provided at one end of the lifting block close to the oil tank, an adjustment spring is provided between the sliding block and the lifting block, and the sliding block is connected to the side rust removal mechanism.

[0008] In one embodiment, a telescopic sliding rod is provided on the laser emitter, and the telescopic sliding rod passes through and is slidably connected to one end of the main support plate.

[0009] In one embodiment, the side rust removal mechanism includes a bending plate, which has an L-shaped structure. The sliding block is fixedly connected to the bent outer end of the bending plate. A first inclined reflecting plate is provided at the corner of the bending plate. A diffuser fixed to the bending plate is provided between the light path from the laser emitter to the first reflecting plate. A condenser is provided in the middle of the light path refracted by the first reflecting plate to the oil tank stage. The condenser is fixedly connected to the lifting block by a fixed support frame.

[0010] In one embodiment, a filter is provided in the middle of the light path reflected by the first reflection plate to the condenser, and the filter is fixedly connected to the bending plate.

[0011] In one embodiment, the side rust removal mechanism is further provided with a heating element, and the heating element includes a light-transmitting tube, and the direct light emitted by the condenser passes through the inner cavity of the light-transmitting tube to the oil tank. The light-transmitting tube is fixed to one end of the bending plate by a support column, and a rotating sleeve is provided at the end of the light-transmitting tube away from the first reflector plate, and an inclined guide rail is provided on the rotating sleeve, and the rotating sleeve is sleeved on the light-transmitting tube. Two groups of electrode plates are also provided at the end of the light-transmitting tube away from the first reflector plate, and the two groups of electrode plates are symmetrically arranged, and the gap between them is parallel to the emission light path of the laser transmitter, and a plurality of notched elastic rings are provided between the two groups of electrode plates, and a connecting rod is provided between the notched elastic ring and the rotating sleeve.

[0012] In one embodiment, the heating element further comprises a rotating structure, the rotating structure comprises a touch rod, the touch rod penetrates and is slidably connected to the support column, and a touch ball is provided at one end of the touch rod close to the oil tank. A movable guide rod is provided in the middle of the touch rod, and when the movable guide rod moves in translation, one end of the movable guide rod passes through the inclined guide rail, and a compression spring penetrated by the touch rod is provided between the support column and the movable guide rod.

[0013] In one embodiment, the bottom rust removal mechanism also includes a circumferential guide rail, which is arranged below the oil tank away from the laser emitter. A connecting plate is provided on the outer side of the circumferential guide rail, a through groove is provided in the middle of the connecting plate, and a power roller placed in the through groove is provided in the middle of the connected plate. The power roller abuts against the circumferential guide rail, and the connecting plate is fixedly connected to the main support plate.

[0014] In one embodiment, the angle adjustment member includes two groups of bent connecting rods, the bent connecting rods present an L-shaped structure, one end of the bent connecting rod is hinged to the middle part of the second reflective plate, and the other end of the bent connecting rod is fixedly connected to the connecting plate. Abutment rollers are provided at both ends of the connecting plate, and the two groups of abutment rollers clamp the circumferential guide rail.

[0015] In one embodiment, a movable rotating rod is provided in the middle part of the two groups of bent connecting rods, and a movable tilting rod is provided on the movable rotating rod. The movable tilting rod presents a C-shaped structure, one end of the movable tilting rod abuts against an end of the second reflecting plate away from the main support plate, and a torsion spring penetrated by the movable rotating rod is provided between the proximal ends of the movable tilting rod and the movable rotating rod.

[0016] The beneficial effects of the present invention are as follows: the present invention is a tank weld laser grinding device with a simple structure and low cost, which effectively prevents the broken metal fragments at the bottom of the tank from blocking the optical path of the laser transmitter and effectively solves the energy loss of laser processing after refraction. The specific implementation method is as follows:

[0017] The operator first places the oil tank on the circumferential guide rail, moves the laser transmitter to the top of the oil tank, starts the laser transmitter and starts grinding. After the oil tank surface is polished, the telescopic sliding rod is moved so that the transmitting end of the laser transmitter touches one end of the bending plate. The light path of the laser transmitter is diverged through the diffuser, and then continues to be refracted to the filter through the first reflecting plate. After the filter filters the stray light, it continues to be converged through the condenser. Further, the surface of the oil tank is irradiated through the light-transmitting tube for grinding. At the same time, in order to ensure that the focused light is in the best position, when the laser transmitter is moved close to the main support plate, the laser transmitter drives the sliding block to squeeze the adjustment spring so that the filter is away from the condenser, and the position between the sliding block and the lifting block is fixed by bolts and the like, and the focus of the condenser is adjusted to the surface of the oil tank contacted by the electrode plate to better adapt to different oil tanks. Then, the rotating threaded rod is rotated to drive the lifting block to lift and lower, so that the laser transmitter can realize the grinding operation of different positions of the side wall of the oil tank.

[0018] Since the energy of the light path is not enough for grinding after divergence and refraction, when the laser emitter is grinding through the condenser, the electrode sheet on the electrode plate is connected to the circuit and the oil tank to form a loop, forming a resistance between the two sets of electrode plates for heating, which can effectively help reduce energy demand;

[0019] Since the welds of different fuel tanks are different, the power roller is started to drive the connecting plate to move along the outer side of the circumferential guide rail, which further drives the laser emitter and the adjustment mechanism to move their positions. After reaching the designated position, the grinding operation can be carried out;

[0020] After the side wall is polished, the bottom of the fuel tank needs to be polished. Since the bottom weld is basically at the edge position, start the rotating threaded rod to drive the lifting block close to the circular guide rail. After that, the bending plate contacts one end of the movable tilting rod and presses down. The other end of the movable tilting rod drives the reflective surface of the second reflector to flip close to the condenser. The light source emitted by the condenser is refracted and guided to the weld of the fuel tank floor through the second reflector. At the same time, due to the descent of the electrode plate on the bending plate, the touch ball is separated from the resistance to the fuel tank, and the compression spring squeezes the movable guide rod to move in the direction of the electrode plate. During the movement of the movable guide rod, after the movable guide rod is passed into the inclined guide rail of the rotating sleeve, the rotating sleeve is driven to rotate and further drive the electrode plate on the notched elastic ring connected to the connecting rod to rotate. Until the electrode plate rotates to a horizontal level, the notched elastic ring drives the two sets of electrode plates to clamp the edge of the fuel tank for auxiliary heating, thereby completing the polishing of the bottom of the fuel tank.

[0021] The device has a simple structure and effectively utilizes the guiding effect of the optical path structure and energy compensation to achieve grinding processing at different positions of the tank weld. It has low cost, good practicality and economy, and is beneficial to the promotion and use of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0023] Figure 1 It is a three-dimensional structural schematic diagram of the present invention;

[0024] Figure 2 is a second three-dimensional structural schematic diagram of the present invention;

[0025] Figure 3 It is a schematic diagram of the three-dimensional structure of the side rust removal mechanism of the present invention;

[0026] Figure 4 It is a schematic diagram of the three-dimensional structure of the side rust removal mechanism of the present invention;

[0027] Figure 5 It is a schematic diagram of the three-dimensional structure of the side rust removal mechanism of the present invention;

[0028] Figure 6 It is a schematic diagram of the three-dimensional structure of the side rust removal mechanism of the present invention;

[0029] Figure 7 It is a schematic diagram of the three-dimensional structure of the side rust removal mechanism of the present invention;

[0030] Figure 8 It is a partial three-dimensional structural schematic diagram of the side rust removal mechanism of the present invention.

[0031] Description of the drawings: 1. Laser transmitter; 11. Telescopic sliding rod; 2. Adjustment mechanism; 21. Main support plate; 211. Movable groove; 212. Rotating threaded rod; 23. Lifting block; 231. Adjustment spring; 24. Sliding block; 3. Side rust removal mechanism; 31. First reflector; 32. Diffuser; 321. Filter; 33. Condenser; 331. Fixed support frame; 34. Bending plate; 341. Touch support rod; 35. Transparent tube; 351. Support column; 36. Electrode plate ; 361. Notched elastic ring; 362. Connecting rod; 37. Rotating sleeve; 371. Inclined guide rail; 38. Touch rod; 381. Touch ball; 382. Movable guide rod; 383. Compression spring; 4. Bottom rust removal mechanism; 41. Circular guide rail; 42. Connecting plate; 421. Through groove; 422. Abutting roller; 424. Power roller; 43. Second reflecting plate; 44. Bending connecting rod; 45. Movable tilting rod; 46. Movable rotating rod; 47. Torsion spring; 5. Fuel tank. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical scheme and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention, that is, the embodiments described are only part of the embodiments of the present invention, rather than all of the embodiments. The components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0033] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present invention.

[0034] Combine the following Figure 1-8 The specific embodiment of the present invention is described as a laser grinding device for the weld of a fuel tank 5, comprising a laser emitter 1. The laser emitter 1 is a prior art and mainly cleans the weld of the fuel tank 5 by emitting laser, so it will not be described in detail. The laser emitter 1 is located above the fuel tank 5, and the fuel tank 5 is supported by a support.

[0035] The adjusting mechanism 2 includes a lifting member and a side rust removal mechanism 3. The side rust removal mechanism 3 is used to refract the light source of the laser transmitter 1 to the side of the oil tank 5. The lifting member is used to adjust the relative height of the side rust removal mechanism 3 to the bottom of the oil tank 5. The lifting member includes a main support plate 21. The main support plate 21 is arranged on the side of the oil tank 5. A movable groove 211 is arranged in the middle of the main support plate 21. A lifting block 23 is also arranged in the movable groove. A rotating threaded rod 212 is also arranged in the movable groove 211. The rotating threaded rod 212 can rotate. The rotating threaded rod 212 passes through and is rotatably connected to the lifting block 23. A sliding block 24 is arranged at one end of the lifting block 23 close to the oil tank 5. An adjustment spring 231 is arranged between the sliding block 24 and the lifting block 23. The sliding block 24 is connected to the side rust removal mechanism 3; beneficially, the side rust removal mechanism 3 includes a bending plate 34. The bending plate 34 has an L-shaped structure. A contact support rod 341 is arranged on the bending plate 34 to Abutting the emitting end of the laser emitter 1, or directly abutting the bending plate 34, with reference to the position or size of the emitting end of the laser emitter 1, the sliding block 24 is fixedly connected to the bent outer end of the bending plate 34, and a first reflecting plate 31 with an inclined setting is provided at the corner of the bending plate 34. The first reflecting plate 31 mainly refracts the laser through the mirror surface of the special coating, which is the prior art. A diffuser 32 fixed to the bending plate 34 is provided between the light path of the laser emitter 1 and the first reflecting plate 31. The diffuser 32 is also the prior art. Note that it is used to assist high-energy laser emission on the first reflecting plate 31 to diffuse and avoid burning the surface coating of the first reflecting plate 31. A condenser 33 is provided in the middle of the light path refracted by the first reflecting plate 31 to the oil tank 5. The condenser 33 is similar to a concave lens and is used to assist laser focusing. It is also the prior art. The condenser 33 is fixedly connected to the lifting block 23 by a fixed support frame 331;

[0036] In practice, after moving the telescopic sliding rod 11 so that the emitting end of the laser emitter 1 touches one end of the bending plate 34, the light path of the laser emitter 1 diverges through the diffuser 32, and then continues to be refracted through the first reflecting plate 31 to the filter 321. After the filter 321 filters the stray light, it continues to be converged by the condenser 33, and further irradiates the surface of the oil tank 5 through the light-transmitting tube 35 for polishing. At the same time, in order to ensure that the focused light is in the best position, when moving the laser emitter 1 close to the main support plate 21, the laser emitter 1 drives the sliding block 24 to squeeze the adjustment spring 231 so that the filter 321 is away from the condenser 33, and the position between the sliding block 24 and the lifting block 23 is fixed by bolts or the like, and the focus of the condenser 33 is adjusted to the surface of the oil tank 5 contacted by the electrode plate 36 to better adapt to different oil tanks 5.

[0037] Advantageously, the laser emitter 1 is provided with a telescopic sliding rod 11, which passes through and is slidably connected to one end of the main support plate 21, so that the laser emitter 1 can be translated on the top of the oil tank 5 manually or automatically.

[0038] The bottom rust removal mechanism 4 includes a second reflective plate 43, the reflective surface of the second reflective plate 43 faces the bottom of the oil tank 5, and an angle adjustment member is provided on the second reflective plate 43. After the reflected light source of the side rust removal mechanism 3 is directly irradiated to the second reflective plate 43, the angle adjustment member adjusts the direct position to the bottom of the oil tank 5.

[0039] Advantageously, a filter 321 is provided in the middle of the light path reflected by the first reflector 31 to the condenser 33 . The filter 321 mainly filters stray light refracted after being emitted from the diffuser 32 to the first reflector 31 . This is prior art and will not be described in detail. The filter 321 is fixedly connected to the bending plate 34 .

[0040] Advantageously, the side rust removal mechanism 3 is also provided with a heating element, which includes a light-transmitting tube 35 , and the direct light emitted by the condenser 33 passes through the inner cavity of the light-transmitting tube 35 to the oil tank 5 . The light-transmitting tube 35 is fixed to one end of the bending plate 34 by a supporting column 351. A rotating sleeve 37 is provided at the end of the light-transmitting tube 35 away from the first reflecting plate 31. An inclined guide rail 371 is provided on the rotating sleeve 37. The rotating sleeve 37 is sleeved on the light-transmitting tube 35. Two groups of electrode plates 36 are also provided at the end of the light-transmitting tube 35 away from the first reflecting plate 31. The two groups of electrode plates 36 are symmetrically arranged, and the gap between them is parallel to the emission light path of the laser transmitter 1. A plurality of notched elastic rings 361 are provided between the two groups of electrode plates 36. The electrode plates 36 are connected to the circuit and connected to the contact section with the oil tank 5 to form a loop. A connecting rod 362 is provided between the notched elastic ring 361 and the rotating sleeve 37. The heating element also includes a rotating structure, which includes a touch rod 38. The touch rod 38 passes through and is slidably connected to the supporting column 351. A touch ball 381 is provided at the end of the touch rod 38 close to the oil tank 5. A movable guide rod 382 is provided in the middle of the contact rod 38 . When the contact rod 38 moves in translation, one end of the movable guide rod 382 passes through the inclined guide rail 371 . A compression spring 383 is provided between the support column 351 and the movable guide rod 382 and is penetrated by the contact rod 38 .

[0041] Advantageously, the bottom rust removal mechanism 4 also includes a circumferential guide rail 41, which is arranged below the oil tank 5 away from the laser emitter 1, and a connecting plate 42 is provided on the outer side of the circumferential guide rail 41, and a through groove 421 is provided in the middle of the connecting plate 42, and a power roller 424 is placed in the through groove 421 in the middle of the connected plate 42, and the power roller 424 abuts against the circumferential guide rail 41, and the connecting plate 42 is fixedly connected to the main support plate 21. Further, the angle adjustment member includes two sets of bent connecting rods 44, and the bent connecting rods 44 present an L-shaped structure, and one end of the bent connecting rod 44 is hinged. The second reflecting plate 43 is connected to the middle part, and the other end of the bent connecting rod 44 is fixedly connected to the connecting plate 42. Abutment rollers 422 are provided at both ends of the connecting plate 42, and two groups of abutment rollers 422 clamp the circumferential guide rail 41; a movable rotating rod 46 is provided in the middle part of the two groups of bent connecting rods 44, and a movable tilting rod 45 is provided on the movable rotating rod 46. The movable tilting rod 45 has a C-shaped structure, and one end of the movable tilting rod 45 abuts against one end of the second reflecting plate 43 away from the main supporting plate 21, and a torsion spring 47 penetrated by the movable rotating rod 46 is provided between the proximal ends of the movable tilting rod 45 and the movable rotating rod 46.

[0042] In practice, the electrode plate 36 on the bending plate 34 descends, the contact ball 381 disengages from the oil tank 5, and the compression spring 383 squeezes the movable guide rod 382 to move in the direction of the electrode plate 36. During the movement of the movable guide rod 382, ​​after the movable guide rod 382 is passed into the inclined guide rail 371 of the rotating sleeve 37, the rotating sleeve 37 is driven to rotate, which further drives the electrode plate 36 on the notched elastic ring 361 connected to the connecting rod 362 to rotate, until the electrode plate 36 rotates to a horizontal position, and the notched elastic ring 361 drives the two groups of electrode plates 36 to clamp the edge of the oil tank 5 for auxiliary heating.

[0043] Working principle of the present invention:

[0044] The operator first places the oil tank 5 on the circumferential guide rail 41, moves the laser transmitter 1 to the top of the oil tank 5, starts the laser transmitter 1 to start grinding, and after the surface of the oil tank 5 is polished, the telescopic sliding rod 11 is moved so that the emitting end of the laser transmitter 1 touches one end of the bending plate 34, and the light path of the laser transmitter 1 is diverged through the diffuser 32, and then continues to be refracted to the filter 321 through the first reflector 31. After the filter 321 filters the stray light, it continues to be converged through the condenser 33, and further irradiates the surface of the oil tank 5 through the light-transmitting tube 35 for grinding. In order to ensure that the focused light is in the best position, when the laser emitter 1 is moved close to the main support plate 21, the laser emitter 1 drives the sliding block 24 to squeeze the adjustment spring 231 so that the filter 321 is away from the condenser 33, and the position between the sliding block 24 and the lifting block 23 is fixed by bolts and the like, and the focus position of the condenser 33 is adjusted to the surface of the oil tank 5 contacted by the electrode plate 36 to better adapt to different oil tanks 5, and then the rotating threaded rod 212 is rotated to drive the lifting block 23 to move up and down, so that the laser emitter 1 can realize the grinding operation of different positions of the side of the oil tank 5;

[0045] Since the energy of the light path is not enough for grinding after divergence and refraction, when the laser emitter 1 is grinding through the condenser 33, the electrode sheet on the electrode plate 36 is connected to the circuit and the oil tank 5 to form a loop, and a resistance is formed between the two sets of electrode plates 36 for heating, which can effectively help reduce energy demand;

[0046] Since the weld seams of different oil tanks 5 are different, the power roller 424 is started to drive the connecting plate 42 to move along the outer side of the circumferential guide rail 41, and further drive the laser emitter 1 and the adjustment mechanism 2 to move positions, and the grinding operation can be performed after reaching the designated position;

[0047] After the side wall is polished, the bottom of the fuel tank 5 needs to be polished. Since the bottom weld is basically at the edge position, the rotating threaded rod 212 is started to drive the lifting block 23 close to the circumferential guide rail 41. Then, the bending plate 34 contacts one end of the movable tilting rod 45 and presses down. The other end of the movable tilting rod 45 drives the reflecting surface of the second reflecting plate 43 to flip close to the condenser 33. The light source emitted by the condenser 33 is refracted through the second reflecting plate 43 and guided to the weld of the bottom plate of the fuel tank 5. At the same time, due to the descent of the electrode plate 36 on the bending plate 34, the touching ball 381 is disengaged. The movable guide rod 382 is away from the oil tank 5, and the compression spring 383 squeezes the movable guide rod 382 to move in the direction of the electrode plate 36. During the movement of the movable guide rod 382, ​​after the movable guide rod 382 is passed into the inclined guide rail 371 of the rotating sleeve 37, the rotating sleeve 37 is driven to rotate, which further drives the electrode plate 36 on the notched elastic ring 361 connected to the connecting rod 362 to rotate, until the electrode plate 36 rotates to a horizontal position, and the notched elastic ring 361 drives the two groups of electrode plates 36 to clamp the edge of the oil tank 5 for auxiliary heating, thereby completing the grinding process of the bottom of the oil tank 5.

[0048] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0049] The above contents are merely examples and explanations of the structure of the present invention. The technicians in the technical field of the present invention may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the invention or exceed the scope defined by the claims, they should all fall within the protection scope of the present invention.

Claims

1. A fuel tank (5) weld seam laser grinding device, characterized in that: It comprises a laser emitter (1), wherein the laser emitter (1) is located above an oil tank (5), and the oil tank (5) is supported by a support; An adjustment mechanism (2), the adjustment mechanism (2) comprising a lifting member and a side rust removal mechanism (3), the side rust removal mechanism (3) being used to refract the light source of the laser transmitter (1) onto the side of the oil tank (5), and the lifting member being used to adjust the relative height position of the side rust removal mechanism (3) to the bottom of the oil tank (5); A bottom rust removal mechanism (4), the bottom rust removal mechanism (4) comprising a second reflector (43), the reflective surface of the second reflector (43) facing the bottom of the oil tank (5), the second reflector (43) being provided with an angle adjustment member, and after the reflected light source of the side rust removal mechanism (3) is directly irradiated onto the second reflector (43), the angle adjustment member adjusts the direct irradiation position to the bottom of the oil tank (5).

2. The fuel tank (5) weld seam laser grinding device according to claim 1, characterized in that: The lifting member comprises a main support plate (21), the main support plate (21) is arranged on the side of the oil tank (5), a movable groove (211) is arranged in the middle of the main support plate (21), a lifting block (23) is also arranged in the movable groove, a rotating threaded rod (212) is also arranged in the movable groove (211), the rotating threaded rod (212) passes through and is rotatably connected to the lifting block (23), a sliding block (24) is arranged at one end of the lifting block (23) close to the oil tank (5), an adjustment spring (231) is arranged between the sliding block (24) and the lifting block (23), and the sliding block (24) is connected to the side rust removal mechanism (3).

3. The fuel tank (5) weld seam laser grinding device according to claim 2, characterized in that: The laser emitter (1) is provided with a telescopic sliding rod (11), and the telescopic sliding rod (11) passes through and is slidably connected to one end of the main support plate (21).

4. The fuel tank (5) weld seam laser grinding device according to claim 2, characterized in that: The side rust removal mechanism (3) comprises a bending plate (34), wherein the bending plate (34) presents an L-shaped structure, the sliding block (24) is fixedly connected to the bent outer end of the bending plate (34), a first reflecting plate (31) arranged obliquely is provided at the corner of the bending plate (34), a diffuser (32) fixed to the bending plate (34) is provided between the light path emitted by the laser emitter (1) and the first reflecting plate (31), a condenser (33) is provided in the middle of the light path refracted by the first reflecting plate (31) to the oil tank (5), and the condenser (33) is fixedly connected to the lifting block (23) by a fixed support frame (331).

5. The fuel tank (5) weld seam laser grinding device according to claim 4, characterized in that: The first reflection plate (31) reflects the light path to the middle of the condenser (33) where a filter (321) is provided, and the filter (321) is fixedly connected to the bending plate (34).

6. The fuel tank (5) weld seam laser grinding device according to claim 4, characterized in that: The side rust removal mechanism (3) is also provided with a heating element, which includes a light-transmitting tube (35). The direct light emitted by the condenser (33) passes through the inner cavity of the light-transmitting tube (35) to the oil tank (5). The light-transmitting tube (35) is fixed to one end of the bending plate (34) by a supporting column (351); a rotating sleeve (37) is provided at one end of the light-transmitting tube (35) away from the first reflecting plate (31); an inclined guide rail (371) is provided on the rotating sleeve (37); the rotating sleeve (37) is sleeved on the light-transmitting tube (35); two groups of electrode plates (36) are also provided at one end of the light-transmitting tube (35) away from the first reflecting plate (31); the two groups of electrode plates (36) are symmetrically arranged, and the gap between them is parallel to the emission light path of the laser emitter (1); a plurality of notched elastic rings (361) are provided between the two groups of electrode plates (36); and a connecting rod (362) is provided between the notched elastic ring (361) and the rotating sleeve (37).

7. The fuel tank (5) weld seam laser grinding device according to claim 6, characterized in that: The heating element further comprises a rotating structure, the rotating structure comprising a touch rod (38), the touch rod (38) penetrates and is slidably connected to the support column (351), and a touch ball (381) is provided at one end of the touch rod (38) close to the oil tank (5). A movable guide rod (382) is provided in the middle of the touch rod (38), and when the movable guide rod (382) moves in translation, one end of the movable guide rod (382) passes through the inclined guide rail (371), and a compression spring (383) penetrated by the touch rod (38) is provided between the support column (351) and the movable guide rod (382).

8. The fuel tank (5) weld seam laser grinding device according to claim 2, characterized in that: The bottom rust removal mechanism (4) further comprises a circumferential guide rail (41), the circumferential guide rail (41) being arranged below the oil tank (5) away from the laser emitter (1), a connecting plate (42) being arranged on the outer side of the circumferential guide rail (41), a through groove (421) being arranged in the middle of the connecting plate (42), a power roller (424) being arranged in the through groove (421) in the middle of the connecting plate (42), the power roller (424) being in contact with the circumferential guide rail (41), and the connecting plate (42) being fixedly connected to the main support plate (21).

9. The fuel tank (5) weld seam laser grinding device according to claim 8, characterized in that: The angle adjustment member comprises two groups of bent connecting rods (44), the bent connecting rods (44) presenting an L-shaped structure, one end of the bent connecting rod (44) being hinged to the middle of the second reflecting plate (43), the other end of the bent connecting rod (44) being fixedly connected to the connecting plate (42), and abutment rollers (422) being provided at both ends of the connecting plate (42), and the two groups of abutment rollers (422) clamping the circumferential guide rail (41).

10. The fuel tank (5) weld seam laser grinding device according to claim 9, characterized in that: A movable rotating rod (46) is provided in the middle of the two groups of bent connecting rods (44), and a movable tilting rod (45) is provided on the movable rotating rod (46). The movable tilting rod (45) presents a C-shaped structure, one end of the movable tilting rod (45) abuts against an end of the second reflecting plate (43) away from the main supporting plate (21), and a torsion spring (47) penetrated by the movable rotating rod (46) is provided between the adjacent ends of the movable tilting rod (45) and the movable rotating rod (46).

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