Laser stitch welding multi-layer metal plate self-adaptive adjusting mechanism and laser welding equipment

Abstract

The utility model discloses a laser stitch welding multi-layer metal plate self-adaptive adjusting mechanism and laser welding equipment. The adjusting mechanism comprises two hub seats, a driving wheel, a follower wheel, a guide rod, a pressing plate, a spring, a driving seat plate, a positioning wheel, a driving piece, a distance measuring detection plate and a distance measuring sensor. The driving wheel makes contact with the follower wheel through bounce of the spring, a workpiece is placed between the driving wheel and the follower wheel, the driving piece drives the whole mechanism to walk along the workpiece, and the positioning wheel moves along the top of the workpiece through the gravity of the mechanism. When the thickness of the workpiece changes, the movable hub seat slides along the guide rod, the distance measuring sensor sends measured distance data to the processor in real time, and welding parameters of the laser welding head are controlled. According to the utility model, the complex working condition that the walking platform surface is uneven can be solved, and the problems of weld penetration, arc breaking, non-uniform closed curve weld joints, unstable welding positions and the like are avoided; and meanwhile, the method is suitable for laser stitch welding with variable thickness, and stitch welding under many complex working conditions can be met.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of laser welding, specifically relates to a kind of laser overlaying welding multilayer metal plate self-adapting adjusting mechanism and laser welding equipment. BACKGROUND

[0002] Laser welding machine's welding technology is more and more popular in processing industry now, it is mainly for thin-walled material, precision parts welding, can realize spot welding, butt welding, overlay welding, sealing welding, patching welding, penetration welding, filler welding, seam welding and hermetic seam welding, and can adapt to multiple welding trajectories.

[0003] Laser overlay welding utilizes high-energy laser beam to combine two or more layers of stainless steel sheet together, and under the action of laser beam, the surface and bonding surface are melted to form a molten pool, thereby realizing the process method of metallurgical connection of metal.

[0004] As shown in Figure 1 There is a metal thin plate material 001 with vertical edge at present, which needs to be overlay welded. In the welding process, in order to enhance the stability of the metal thin plate material 001 as a whole, and facilitate subsequent installation, it is necessary to place the clamping plate at a certain interval between the metal thin plate material 001 before welding as a whole.

[0005] However, the conventional laser overlay welding equipment has certain limitations. Such equipment can usually only weld materials of fixed thickness, and its welding conditions are relatively harsh, requiring the welding surface to be flat or the height difference between the upper and lower positions to be at a low level, which belongs to the conventional welding mode, and cannot be applied to the complex welding environment of uneven ground. Therefore, the existing laser overlay welding equipment cannot meet the overlay welding requirements of the metal thin plate material 001 with vertical edge.

[0006] Therefore, we propose a kind of laser overlay welding multilayer metal plate self-adapting adjusting mechanism and laser welding equipment. CONTENT OF UTILITY MODEL

[0007] In order to solve the problems existing in the prior art, the utility model provides a kind of laser overlay welding multilayer metal plate self-adapting adjusting mechanism and laser welding equipment.

[0008] In the first aspect, in order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0009] A kind of laser overlay welding multilayer metal plate self-adapting adjusting mechanism, comprising:

[0010] Fixed wheel hub seat, the driven shaft is rotationally arranged on the fixed wheel hub seat, and the bottom of the driven shaft is provided with a driving wheel;

[0011] A driven wheel hub seat is provided with a driven shaft rotatingly arranged thereon, and the bottom of the driven shaft is provided with a driven wheel;

[0012] A plurality of guide rods are arranged in parallel on the fixed wheel hub seat, and the guide rods pass through the driven wheel hub seat, and the driven wheel hub seat can slide along the axial direction of the guide rods;

[0013] A pressing plate is arranged at the end of the guide rod;

[0014] A spring is sleeved on the guide rod, and the two ends of the spring are in abutment with the pressing plate and the driven wheel hub seat respectively, and the rebound force of the spring makes the driving wheel abut against the driven wheel and clamps the workpiece;

[0015] A driving seat plate is arranged above the two wheel hub seats, the driving seat plate is fixed with the fixed wheel hub seat, the driving seat plate is used for mounting the laser welding head on the laser welding equipment, and the driving seat plate can slide up and down along the laser welding equipment;

[0016] Positioning wheels are arranged at the two ends of the driving seat plate, and the positioning wheels are used for rolling on the top of the workpiece;

[0017] A driving member is arranged on the driving seat plate, and the driving member is used for driving the driving shaft to rotate and driving the driving wheel to walk on the workpiece;

[0018] A distance measuring detection plate is arranged on the driven wheel hub seat;

[0019] A distance measuring sensor is arranged on the driving seat plate and corresponds to the distance measuring detection plate, the distance measuring sensor sends the measured data to the processor in real time, and controls the welding parameters of the laser welding head on the laser welding equipment.

[0020] Further, a tensioning bolt is arranged, the guide rod passes through the pressing plate, the pressing plate can slide along the axial direction of the guide rod, the tensioning bolt passes through the pressing plate and the driven wheel hub seat, and is threadedly connected with the fixed wheel hub seat.

[0021] Further, the end of the guide rod is provided with a baffle.

[0022] Further, the bottom of the driving seat plate is provided with a floating guide rod, and the floating guide rod is slidably connected with the frame of the laser welding equipment in the up-down direction.

[0023] Further, the height of the positioning wheel on the driving seat plate is adjustable.

[0024] Further, a vertical positioning seat plate is arranged on the positioning wheel, two vertical strip-shaped holes are arranged on the positioning seat plate, and a bolt is threadedly connected with the driving seat plate through the strip-shaped hole.

[0025] Further, the positioning seat plate is provided with a scale.

[0026] Further, two mounting holes with a width suitable for the positioning seat plate are formed in the driving seat plate, and the scale is installed on the front surface of the positioning seat plate.

[0027] Further, a compression spring is arranged between the movable wheel hub seat and the fixed wheel hub seat, and a hole for mounting the compression spring is formed in the movable wheel hub seat and / or the fixed wheel hub seat.

[0028] Further, the driving member comprises a servo motor, a speed reducer, a driving gear and a driven gear, the speed reducer is integrally connected with the servo motor, the speed reducer is fixed on the top of the driving seat plate, the driving gear is fixed on the speed reducer, the driven gear is fixed on the top of the driving shaft, and the driven gear is engaged with the driving gear.

[0029] Further, the guide rods are cylindrical rods, and the number of the guide rods is two, and the guide rods are symmetrically distributed on the fixed wheel hub seat.

[0030] Further, two driving wheels are installed on the fixed wheel hub seat, and two driven wheels corresponding to the driving wheels are installed on the movable wheel hub seat.

[0031] Further, an avoiding opening for avoiding the distance measuring detection plate is formed in the driving seat plate, the distance measuring detection plate extends out of the avoiding opening, and the distance measuring sensor is arranged on the top surface of the driving seat plate.

[0032] In the second aspect, to achieve the above object, the utility model adopts the following technical scheme:

[0033] A laser welding device comprises:

[0034] A rack;

[0035] A roller is installed on the bottom of the rack;

[0036] A laser welding head;

[0037] In addition, the laser welding head is fixed on the driving seat plate, and the driving seat plate can slide up and down along the rack.

[0038] Further, the height of the roller on the rack is adjustable.

[0039] Further, an angle plate is fixed on the top of the roller, a strip-shaped hole two is formed in the vertical plate of the angle plate, and a bolt is fixedly connected with the rack through the strip-shaped hole two.

[0040] Further, the rack is threadedly connected with an adjusting screw, and the head of the adjusting screw is used for abutting against the flat plate of the angle plate.

[0041] Further, the vertical plate side of the angle plate is provided with a second scale, and the rack is provided with an indicating line corresponding to the second scale.

[0042] Compared with the prior art, the welding device has the following beneficial effects:

[0043] In the utility model, the workpiece is placed between the two wheels, and the driving member drives the driving wheel to walk along the workpiece, when the thickness of the workpiece changes, the distance measuring sensor can detect the thickness change of the workpiece to be welded, so as to adjust the welding process in real time, and meet the continuous laser welding of automatic welding of various thickness changes.

[0044] Meanwhile, the positioning wheel is placed on the top of the workpiece to be welded under the gravity of the whole mechanism, and walks along the workpiece, effectively avoiding the problems of welding through, arc breaking, uneven closed curve welding seam and unstable welding position caused by uneven platform, and ensuring the stability of welding. BRIEF DESCRIPTION OF DRAWINGS

[0045] Figure 1 is the structural schematic diagram of the prior working condition.

[0046] Figure 2 is the structural schematic diagram of the embodiment 1 of the utility model.

[0047] Figure 3 is the structural schematic diagram of the whole wheel hub seat in the embodiment 1 of the utility model.

[0048] Figure 4 is the schematic diagram of the fixed wheel hub seat and the structure thereon in the embodiment 1 of the utility model.

[0049] Figure 5 is the schematic diagram of the movable wheel hub seat and the structure thereon in the embodiment 1 of the utility model.

[0050] Figure 6 is the structural schematic diagram of the driving member in the embodiment 1 of the utility model.

[0051] Figure 7 is the structural schematic diagram of the embodiment 2 of the utility model. Figure 2

[0052] Figure 8 is the structural schematic diagram of the embodiment 2 of the utility model.

[0053] Figure 9 is the structural schematic diagram of the embodiment 2 of the utility model. Figure 8

[0054] Reference signs in the drawings: ​​

[0055] 001. Thin metal sheets;

[0056] 1. Fixed hub seat; 2. Moving hub seat; 3. Drive shaft; 4. Drive wheel; 5. Driven shaft; 6. Follower wheel; 7. Guide rod; 8. Pressure plate; 9. Spring; 10. Drive base plate; 101. Mounting hole; 102. Clearance opening; 11. Positioning wheel; 12. Drive component; 121. Servo motor; 122. Reducer; 123. Drive gear; 124. Driven gear; 13. Distance measuring plate; 14. Distance sensor; 15. Tensioning bolt; 16. Baffle; 17. Floating guide rod; 18. Positioning base plate; 181. Strip hole one; 19. Scale one; 20. Compression spring;

[0057] 100. Frame; 200. Roller; 300. Laser welding head; 400. Angle plate; 500. Adjusting screw; 600. Scale two. Detailed Implementation

[0058] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Example

[0059] like Figures 2 to 7 As shown, this application provides an adaptive adjustment mechanism for laser-welded multilayer metal sheets, which includes a fixed hub seat 1, a moving hub seat 2, a driving wheel 4, a follower wheel 6, a guide rod 7, a pressure plate 8, a spring 9, a drive base plate 10, a positioning wheel 11, a drive component 12, a distance measuring detection plate 13, and a distance measuring sensor 14.

[0060] Specifically, the fixed hub 1 and the moving hub 2 are located on the same horizontal plane and are positioned opposite each other; both are cuboid structures. The driving shaft 3 is rotatably mounted on the fixed hub 1 via bearings, and the driving wheel 4 is fixed to the bottom of the driving shaft 3 by a key. The driven shaft 5 is rotatably mounted on the moving hub 2 via bearings, and the following wheel 6 is fixed to the bottom of the driven shaft 5 by a key.

[0061] In the above description, the driving wheel 4 and the follower wheel 6 are set to the same size. Taking the structure of the driving wheel 4 as an example, we will now describe it in detail. The driving wheel 4 is a rotating structure, which includes a disk and a sleeve located on the top of the disk. The top surface of the disk has a chamfered structure.

[0062] In the embodiment, the number of the driving wheels 4 and the follower wheels 6 is equal, which can be one, two, three, etc., and is respectively installed on the fixed wheel hub seat 1 and the movable wheel hub seat 2. The driving wheels 4 and the follower wheels 6 are oppositely arranged to form a plurality of pairs of pressing wheel structures. Preferably, the number of the driving wheels 4 and the follower wheels 6 is two, which is respectively installed on the fixed wheel hub seat 1 and the movable wheel hub seat 2. The driving wheels 4 and the follower wheels 6 are oppositely arranged to form two pairs of pressing wheel structures.

[0063] In the embodiment, referring to Figure 3 and Figure 4 , the number of the guide rods 7 is several. The guide rods 7 are fixed on the fixed wheel hub seat 1 and pass through the movable wheel hub seat 2 and are in sliding cooperation with the movable wheel hub seat 2. Preferably, the guide rods 7 are two cylindrical rod structures. The two guide rods 7 are fixed on the two sides of the end of the fixed wheel hub seat 1 facing the movable wheel hub seat 2, and the two guide rods 7 are arranged in parallel and are symmetrically distributed about the fixed wheel hub seat 1. The movable wheel hub seat 2 is provided with through holes matched with the guide rods 7. The movable wheel hub seat 7 is sleeved on the guide rods 7 and slides along the axial direction of the guide rods 7.

[0064] The embodiment specifically discloses the connection structure of the guide rod 7 and the fixed wheel hub seat 1. The end of the guide rod 7 is fixed with a mounting seat. The mounting seat is fixedly connected with the fixed wheel hub seat 1 through bolts. In addition, a mounting groove is formed in the side of the fixed wheel hub 1. The mounting seat at the end of the guide rod 7 is fixed in the mounting groove. In this way, the movement of the movable wheel hub seat 2 caused by the mounting seat on the guide rod 7 can be effectively avoided.

[0065] Referring to Figure 3 and Figure 5 , the pressing plate 8 is arranged at the end of the guide rod 7 away from the fixed wheel hub seat 1. The spring 9 is sleeved on the guide rod 7 and is located between the movable wheel hub seat 2 and the pressing plate 8. The two ends of the spring 9 respectively abut against the movable wheel hub seat 2 and the pressing plate 8. The rebound force of the spring 9 makes the driving wheels 4 and the follower wheels 6 abut against each other. When the workpiece to be welded is placed between the two wheels, the workpiece to be welded is in a pressed state.

[0066] In the embodiment, the pressing plate 8 can be fixedly connected with the guide rod 7. Of course, the baffle 16 can also be fixedly connected at the end of the guide rod 7 to limit the pressing plate 8 and avoid the pressing plate 8 from being separated from the guide rod 7. In actual use, the latter scheme is preferred. The baffle 16 is fixed at the end of the guide rod 7 to limit the pressing plate 8.

[0067] In the above scheme, the middle part of the pressing plate 8 can be provided with a tensioning bolt 15, the tensioning bolt 15 passes through the pressing plate 8 and the driving wheel hub seat 2 in sequence, and the tensioning bolt 15 is threadedly connected with the fixed wheel hub seat 1. In this way, when the mechanism is installed, the spring can be initially in an uncompressed state, so as to facilitate installation; at the same time, the pre-tightening force of the spring 9 is adjusted through the tensioning bolt 15, so as to control the range and intensity of wheel track adjustment.

[0068] In a possible embodiment, recesses are formed on both sides of the end of the driving wheel hub seat 2 away from the fixed wheel hub seat 1, and the end of the spring 9 is located in the recesses. In order to enable the staff to distinguish the two wheel hub seats at the first time during installation, a recess is formed on the end of the fixed wheel hub seat 1 away from the driving wheel hub seat 2. Specifically, the recess is located in the middle of the end of the fixed wheel hub seat 1 away from the driving wheel hub seat 2, and has an isosceles trapezoidal shape with an outer large and inner small size.

[0069] In a possible embodiment, a compression spring 20 is arranged between the fixed wheel hub seat 1 and the driving wheel hub seat 2. After the wheel hub is opened, the compression spring 20 keeps the driving wheel 4 and the driven wheel 6 having a spacing, so as to facilitate clamping of the workpiece. Specifically, the fixed wheel hub seat 1 and / or the driving wheel hub seat 2 is / are provided with a hole for mounting the compression spring 20; further, the fixed wheel hub seat 1 and the driving wheel hub seat 2 are both provided with holes for mounting the compression spring 20. At the same time, the tensioning bolt 15 and the compression spring 20 are located in the middle region of the fixed wheel hub seat 1 and the driving wheel hub seat 2.

[0070] With reference to Figure 2 The driving seat plate 10 has a rectangular plate structure, the length direction of the driving seat plate 10 is along the welding direction of the workpiece to be welded, the driving seat plate 10 is fixedly connected with the fixed wheel hub seat 1 through a bolt, and a certain spacing is arranged between the two.

[0071] The driving seat plate 10 is slidably matched with the laser welding equipment along the height direction of the laser welding equipment, and the two ends of the length direction of the driving seat plate 10 are fixedly provided with the positioning wheels 11. When the laser welding equipment welds the workpiece, the whole laser welding multi-plate stack welding adjusting mechanism slides on the laser welding equipment under the gravity of the whole laser welding multi-plate stack welding adjusting mechanism, so that the positioning wheels 11 press on the upper edge of the vertical locking edge of the workpiece and roll and walk on the upper edge.

[0072] In the embodiment, the whole mechanism can slide in the height direction of the laser welding equipment, so that the positioning wheels 11 always keep in contact with the vertical edge of the workpiece, and thus the whole mechanism can be applied to welding in a complex and uneven ground, welding parameters caused by uneven welding platform are avoided, and the stability of welding quality is further ensured.

[0073] With reference to Figure 2 and Figure 7In addition, in a possible embodiment, the height of the positioning wheel 11 is adjustable. Specifically, a vertical positioning seat plate 18 is arranged on the positioning wheel 11, and the positioning wheel 11 is rotatably arranged at the bottom of the positioning seat plate 18, that is, a groove is arranged at the bottom of the positioning seat plate 18, and the positioning wheel 11 is rotatably arranged in the groove of the positioning seat plate 18 through a rotating shaft. Two vertical strip-shaped holes 181 are arranged on the positioning seat plate 18, and a bolt passes through the strip-shaped hole 181 and is threadedly connected with the driving seat plate 10.

[0074] In order to accurately adjust the distance between the positioning wheel 11 and the driving seat plate 10, a scale 19 is fixed on the positioning seat plate 18, and the distance between the positioning wheel 11 and the driving seat plate 10 is determined through the scale 19.

[0075] Further, two mounting holes 101 are arranged on the driving seat plate 10 and are matched with the positioning seat plate 18. The scale 19 is fixed on the front surface of the positioning seat plate 18 and is located on one side of the positioning seat plate 18. In this way, the upper edge of the mounting hole 101 is opposite to the scale 19, and the numerical value on the scale 19 can be read.

[0076] Referring to Figure 2 The floating guide rods 17 are arranged at the four corners of the bottom surface of the driving seat plate 10 and are vertically arranged. The floating guide rods 17 are used to pass through the frame of the laser welding equipment and are slidably connected with the frame. In addition, the driving seat plate 10 and the frame of the laser welding equipment can also be slidably connected through a wire rail sliding block.

[0077] Referring to Figure 2 and Figure 6 In this embodiment, the driving member 12 is fixed on the driving seat plate 10, and the driving member 12 is used to drive the driving shaft 3 to rotate and further drive the driving wheel 4 to rotate.

[0078] Specifically, the driving member 12 includes a servo motor 121, a speed reducer 122, a driving gear 123 and two driven gears 124. The servo motor 121 is integrally arranged with the speed reducer 122. The speed reducer 122 is fixed on the top surface of the driving seat plate 10 through a bolt. The driving shaft of the speed reducer 121 passes through the driving seat plate 10 and is fixedly connected with the driving gear 123. The two driven gears 124 are fixed on the top of the two driving shafts 3. The driving gear 123 is engaged with the two driven gears 124. The servo motor 121 drives the driving gear 123 to rotate, and further drives the two driven gears 124 to synchronously rotate, so that the two driving wheels 4 synchronously rotate and stably walk on the workpiece.

[0079] In addition, in this embodiment, the driving member 12 can also be a belt wheel structure or a chain wheel structure driven by a motor, which synchronously drives the two driving wheels 4 to rotate and walk on the workpiece. Details are not described herein.

[0080] In the embodiment, the driving base plate 20 provides the installation position of the laser welding head, the laser welding head is installed on the part of the driving base plate 20 with the fixed wheel hub seat 1, and the laser welding head is located between the two driving wheels 4. The distance between the laser welding head and the workpiece is ensured to be constant.

[0081] With reference to Figure 2 In the embodiment, the distance measuring detection plate 13 is fixed on the driving wheel hub seat 2, the distance measuring sensor 14 is fixed on the fixed wheel hub seat 1 or the driving base plate 10, and is arranged opposite to the distance measuring detection plate 13. Further, the distance measuring sensor 14 is fixed on the top surface of the driving base plate 10, the driving base plate 10 is provided with a avoiding opening 102, the top of the distance measuring detection plate 14 extends out of the avoiding opening 102, and the distance measuring detection plate 13 cooperates with the distance measuring sensor 14.

[0082] The laser welding head installed on the driving base plate 10 is located behind the distance measuring detection plate 13 and the distance measuring sensor 14, the distance measuring sensor 14 can detect the thickness change of the workpiece to be welded, and the distance measuring sensor 14 transmits the measured real-time data to the processor, and the processor controls the laser welding head to adjust the welding process in real time, so as to meet the continuous laser welding of automatic welding of various thickness changes.

[0083] In operation, the tensioning bolt 15 can press the spring 9 through the pressing plate 8, so that the driven wheel 6 is tightly attached to the driving wheel 4, and the workpiece to be welded can be pressed when the workpiece to be welded is in the middle. The servo motor 121 operates, the driving gear 123 of the driving end of the servo motor 121 drives the driven gear 124 to rotate, so that the driving wheel 4 rotates, and the rotation of the driving wheel 4 drives the whole mechanism to move through the friction force with the workpiece, and the driven wheel 6 rotates accordingly. When the thickness of the workpiece changes, the driving wheel hub seat 2 moves along the guide rod 7 relative to the fixed wheel hub seat 1. At this time, the compression amount of the spring 9 changes, and the floating adjustment of the wheel track is realized through the elastic action of the spring 9.

[0084] At the same time, since the driving base plate 10 slides along the laser welding equipment through the floating guide rod 17, even if the driving laser welding equipment travels on uneven ground, the positioning wheel 11 of the self-adaptive adjusting mechanism is in contact with and walks along the upper edge of the vertical locking edge of the workpiece at any time.

[0085] The application can meet the continuous laser welding of automatic welding of various thickness changes, and effectively avoid the problems of welding through, arc breaking, uneven closed curve welding seam, unstable welding position and the like caused by uneven platform, and ensure the stability of welding.

[0086] The self-adaptive adjusting mechanism of the application has the following advantages:

[0087] Simple structure: the mechanism is composed of several main components, and is easy to manufacture and install.

[0088] Adjustable wheel track: through the elastic effect of spring 9, the floating adjustment of wheel track is realized, and the adaptability of the equipment is improved.

[0089] Good stability: two guide rods 7 are symmetrically distributed, which ensures the stability of the movement of the movable wheel hub 2.

[0090] Spring protection: spring 9 is sleeved on guide rod 7, which avoids the distortion and deformation of spring 9 in the compression process, prolongs the service life of spring 9.

[0091] Of course, the adjusting mechanism can also be applied to various mechanical equipment that needs to adjust the wheel track, such as industrial vehicles, agricultural machinery, etc. In different working environments, the passability, stability and operation performance of the equipment can be improved by adjusting the wheel track.

[0092] In addition, two guide rods 7 can be symmetrically fixed on one side of the movable wheel hub 2, the guide rod 7 passes through the fixed wheel hub 1 and the pressing plate 8, the spring 9 is sleeved on the guide rod 7, and the tension screw 15 passes through the pressing plate 8, the fixed wheel hub 1 and is screwed with the movable wheel hub 2. Embodiment

[0093] As shown in Figure 8 and Figure 9 based on the same utility model concept, the application also discloses a laser welding equipment which comprises a rack 100, a roller 200, a laser welding head 300 and the laser welding multi-layer metal plate self-adapting adjusting mechanism. Specifically, the rack 100 is spliced by metal rod pieces and plate pieces, the rack 100 is in the shape of a cuboid as a whole, the roller 200 is fixed at the bottom corners of the rack 100, the laser welding head 300 is fixed on the driving seat plate 10 of the laser welding multi-plate welding adjusting mechanism, and the laser welding head 300 is located between the two driving wheels 4. Four sleeves matched with the floating guide rods 16 are fixed on the rack 100.

[0094] In the embodiment, the distance between the roller 200 and the rack 100 is adjustably arranged. Specifically, an angle plate 400 is fixed on the roller 200, two vertically arranged strip-shaped holes two (not shown in the figure) are formed in the vertical plate of the angle plate 400, and the bolts pass through the strip-shaped holes two and are screwed with the rack 100, so as to fix the angle plate 400 on the rack 100.

[0095] Further, in order to facilitate the stability of the roller 200 on the rack 100, a vertically arranged adjusting bolt 500 is screwed on the rack 100, the head of the adjusting bolt 500 is used to abut against the flat plate of the angle plate 400, the adjusting bolt 500 is mainly used to support the angle plate 400, and effectively avoids the deformation of the angle plate 400; at the same time, the position of the angle plate 400 on the rack 100 can be adjusted by using the adjusting bolt 500.

[0096] In a possible embodiment, in order to adjust the equal distance between the four rollers 200 and the frame 100, a second scale 600 is fixed on the side of the corner plate 400, and an indicating line is formed on the side of the frame 100 and opposite to the second scale 600, thereby facilitating reading the distance between the rollers 200 and the frame 100.

[0097] The above merely describes a preferred specific implementation of the present application, but the protection scope of the present application is not limited to this. Any skilled person in the art, according to the technical scheme and the inventive concept of the present application, can make equivalent replacement or change within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A self-adjusting mechanism for laser build-up welding of multi-layer metal sheets, characterized in that, It includes: The fixed wheel hub seat (1) is provided with a driving shaft (3) rotatingly arranged on the fixed wheel hub seat (1), and the bottom of the driving shaft (3) is provided with a driving wheel (4); The driven wheel hub seat (2) is provided with a driven shaft (5) rotatingly arranged on the driven wheel hub seat (2), and the bottom of the driven shaft (5) is provided with a driven wheel (6); A plurality of guide rods (7) are arranged in parallel on the fixed wheel hub seat (1), the guide rods (7) pass through the driven wheel hub seat (2), and the driven wheel hub seat (2) can slide along the axial direction of the guide rods (7); A pressing plate (8) is arranged at the end of the guide rod (7); A spring (9) is sleeved on the guide rod (7), and the two ends of the spring (9) are respectively in contact with the pressing plate (8) and the driven wheel hub seat (2), the rebound force of the spring (9) makes the driving wheel (4) in contact with the driven wheel (6), and the workpiece is clamped; A driving seat plate (10) is arranged above the two wheel hub seats, the driving seat plate (10) is fixed with the fixed wheel hub seat (1), the driving seat plate (10) is used for mounting a laser welding head (300) on a laser welding device, and the driving seat plate (10) can slide up and down along the laser welding device; Positioning wheels (11) are arranged at the two ends of the driving seat plate (10), and the positioning wheels (11) are used for rolling on the top of the workpiece; A driving member (12) is arranged on the driving seat plate (10), and the driving member (12) is used for driving the driving shaft (3) to rotate and driving the driving wheel (4) to walk on the workpiece; A distance measuring detection plate (13) is arranged on the driven wheel hub seat (2); And a distance measuring sensor (14) is arranged on the driving seat plate (10) and corresponds to the distance measuring detection plate (13), the distance measuring sensor (14) sends the measured data to a processor in real time to control the welding parameters of the laser welding head (300) on the laser welding device.

2. The laser lap welded multi-metal sheet adaptive adjustment mechanism according to claim 1, wherein, It also includes a tensioning bolt (15), the guide rod (7) passes through the pressing plate (8), the pressing plate (8) can slide along the axial direction of the guide rod (7), the tensioning bolt (15) passes through the pressing plate (8) and the driven wheel hub seat (2), and is threadedly connected with the fixed wheel hub seat (1).

3. The laser lap welded multi-metal sheet adaptive adjustment mechanism according to claim 2, wherein, The end of the guide rod (7) is provided with a baffle (16).

4. The laser lap welded multi-metal sheet adaptive adjustment mechanism according to claim 1, wherein, The bottom of the driving seat plate (10) is provided with a floating guide rod (17), and the floating guide rod (17) is slidably connected with the frame of the laser welding device in the up-down direction.

5. The laser lap welded multi-metal sheet adaptive adjustment mechanism according to claim 1, wherein, The height of the positioning wheel (11) on the driving seat plate (10) is adjustable.

6. The laser lap welded multi-metal sheet adaptive adjustment mechanism according to claim 5, wherein, A vertical positioning seat plate (18) is arranged on the positioning wheel (11), two vertical strip-shaped holes (181) are formed in the positioning seat plate (18), and a bolt passes through the strip-shaped hole (181) and is threadedly connected with the driving seat plate (10).

7. The laser lap welded multi-metal sheet adaptive adjustment mechanism according to claim 6, wherein, A scale (19) is arranged on the positioning seat plate (18).

8. The laser lap welded multi-metal sheet adaptive adjustment mechanism according to claim 7, wherein, The driving seat plate (10) is provided with two mounting holes (101) with the width of the positioning seat plate (18), and the scale (19) is installed on the front surface of the positioning seat plate (18).

9. The laser lap welded multi-metal sheet adaptive adjustment mechanism of claim 1, wherein, The compression spring (20) is arranged between the movable hub seat (2) and the fixed hub seat (1), and the movable hub seat (2) and / or the fixed hub seat (1) is provided with a hole for mounting the compression spring (20).

10. The laser lap welded multi-metal sheet adaptive adjustment mechanism of claim 1, wherein, The driving part (12) comprises a servo motor (121), a speed reducer (122), a driving gear (123) and a driven gear (124), the speed reducer (122) is integrally connected with the servo motor (121), the speed reducer (122) is fixed on the top of the driving seat plate (10), the driving gear (123) is fixed on the speed reducer (122), the driven gear (124) is fixed on the top of the driving shaft (3), and the driven gear (124) is engaged with the driving gear (123).

11. The laser lap welded multi-metal sheet adaptive adjustment mechanism according to claim 1, wherein, The guide rod (7) is a cylindrical rod, the number of the guide rod (7) is two, and the guide rod (7) is symmetrically distributed on the fixed hub seat (1).

12. The laser lap welded multi-metal sheet adaptive adjustment mechanism of claim 1, wherein, The fixed hub seat (1) is provided with two driving wheels (4), and the movable hub seat (2) is provided with two driven wheels (6) corresponding to the driving wheels (4).

13. The laser lap welded multi-metal sheet adaptive adjustment mechanism of claim 1, wherein, The driving seat plate (10) is provided with a avoiding hole (102) for avoiding the distance measuring detection plate (13), the distance measuring detection plate (13) extends from the avoiding hole (102), and the distance measuring sensor (14) is arranged on the top surface of the driving seat plate (10).

14. A laser welding apparatus characterized by comprising: It comprises: a rack (100); a roller (200) installed on the bottom of the rack (100); a laser welding head (300); and the adaptive adjusting mechanism of the laser overlap welded multi-layer metal plate according to any one of claims 1-10, the laser welding head (300) is fixed on the driving seat plate (10), and the driving seat plate (10) can slide up and down along the rack (100).

15. A laser welding apparatus according to claim 14, wherein The height of the roller (200) on the rack (100) is adjustable.

16. A laser welding apparatus according to claim 15, wherein The top of the roller (200) is fixed with an angle plate (400), a strip-shaped hole two is formed in the vertical plate of the angle plate (400), and a bolt passes through the strip-shaped hole two and is fixedly connected with the rack (100).

17. A laser welding apparatus according to claim 16, wherein The rack (100) is threadedly connected with an adjusting screw (500), and the head of the adjusting screw (500) is used for abutting against the flat plate of the angle plate (400).

18. A laser welding apparatus according to claim 16 or 17, wherein, The vertical plate side of the angle plate (400) is provided with a second scale (600), and the rack (100) is provided with an indicating line corresponding to the second scale (600).

Images