CN110919210A

CN110919210A - Magnesium alloy plate laser welding seam inspection device

Info

Publication number: CN110919210A
Application number: CN201911224723.9A
Authority: CN
Inventors: 沈言锦; 张坤; 李治国; 邹瑞睿
Original assignee: Hunan Automotive Engineering Vocational College
Current assignee: Hunan Automotive Engineering Vocational College
Priority date: 2019-12-04
Filing date: 2019-12-04
Publication date: 2020-03-27

Abstract

The invention discloses a laser welding seam inspection device for a magnesium alloy plate, which comprises a rack, wherein an object stage is fixed at the upper end of the rack, a first mounting plate and a second mounting plate are respectively fixed at the left side and the right side of the object stage, the first mounting plate and the second mounting plate are connected with a mounting frame in a sliding manner through a linear rail, a front-back moving mechanism is arranged at the left side of the mounting frame, a first servo motor is fixed at the upper end of the mounting frame, a first lead screw is fixed on an output shaft of the first servo motor, one end of the first lead screw is rotatably connected with the left end of the mounting frame, and a first moving block is in threaded transmission connection. The both sides of first movable block are fixed with the slider, set up on the inner wall of mounting bracket with the spout of slider looks adaptation, the slider slides in the spout, the lower extreme of first movable block is fixed with the ultrasonic flaw detector body, the ultrasonic flaw detector body is located the top of objective table, the front side of objective table is provided with stock stop, realizes the automatic detection welding seam, work efficiency is high, and working strength is low.

Description

Magnesium alloy plate laser welding seam inspection device

Technical Field

The invention belongs to the technical field of weld joint inspection devices, and particularly relates to a laser weld joint inspection device for a magnesium alloy plate.

Background

As an advanced special welding process, laser welding occupies irreplaceable positions in various fields in the industry by virtue of the advantages of large energy density, high welding speed, small weld seam heat affected zone, small deformation, high joint mechanical property and the like, and along with the continuous increase of welding requirements of modern industry, "high quality, high efficiency, low cost and intellectualization" will become the direction of the research and development of future welding technology.

The connection between the magnesium alloy plates needs to use laser welding, the welding seam is subjected to nondestructive flaw detection after welding, namely, on the premise of not damaging or influencing the use performance of the detected object, whether the welding seam of the detected object has defects or non-uniformity is detected, and information such as the size, the position, the property, the quantity and the like of the defects is given, most of the existing welding seam detection devices are manually operated, the working efficiency is low, and the workload of workers is large,

therefore, the automatic laser welding seam inspection device for the magnesium alloy plates is provided for solving the problems in the prior art.

Disclosure of Invention

The invention aims to provide a laser welding seam inspection device for magnesium alloy plates, and aims to solve the problems that most welding seam inspection devices in the background technology are manually operated, the working efficiency is low, and the workload of workers is large.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides a magnesium alloy panel laser welding seam verifying attachment, includes the frame, the upper end of frame is fixed with the objective table, the left and right sides of objective table is fixed with first mounting panel and second mounting panel respectively, there is the mounting bracket through linear rail sliding connection on first mounting panel and the second mounting panel, the left side of mounting bracket is provided with back-and-forth movement mechanism, the upper end right side of mounting bracket has a servo motor through the bolt fastening, a servo motor's output shaft end is fixed with first lead screw, first servo motor's one end is kept away from to first lead screw is passed through the bearing and is connected with the left end rotation of mounting bracket, screw thread transmission is connected with first movable block on the first lead screw. The ultrasonic flaw detector comprises a first moving block, sliding blocks, sliding grooves, ultrasonic flaw detectors, a material blocking mechanism and a mounting frame, wherein the sliding blocks are fixed on two sides of the first moving block, sliding grooves matched with the sliding blocks are formed in the inner wall of the mounting frame, the sliding blocks slide in the sliding grooves, the ultrasonic flaw detectors are fixed at the lower ends of the first moving block and located above an objective table, and the material blocking mechanism is arranged on the front side of the objective table.

Preferably, the front-and-back moving mechanism comprises a first fixing plate, the first fixing plate is fixed on the rear side of the first mounting plate, a second servo motor is fixed on the first fixing plate through bolts, a second lead screw is fixed at the end of an output shaft of the second servo motor, the end of the second lead screw, which is far away from the second servo motor, is rotatably connected with the second fixing plate through a bearing, the second fixing plate is fixed at the front end of the first mounting plate, a second moving block is connected to the second lead screw in a threaded transmission manner, and the second moving block is fixed at the lower end of the left side of the mounting frame.

Preferably, the stock stop includes first cylinder, first cylinder passes through the bolt fastening at the front end downside of objective table, the piston rod tip of first cylinder is fixed with the striker plate, the striker plate runs through the front side of objective table.

Preferably, guide rods are fixed to two sides of the bottom end of the material baffle plate, penetrate through the lower side of the objective table and extend to the lower side.

Preferably, the lower end part of the guide rod is welded with a first limiting block, and the first limiting block is positioned below the front side of the objective table.

Preferably, a second cylinder is fixed in the middle of the second mounting plate through a bolt, a material clamping plate is fixed at the end of a piston rod of the second cylinder, and the material clamping plate is located on the upper side of the objective table.

Preferably, a third mounting plate is fixed to the upper end of the rear side of the object stage, a third cylinder is fixed to the middle of the rear side of the third mounting plate through a bolt, a material pushing plate is fixed to the end portion of a piston rod of the third cylinder, and the material pushing plate is located at the upper end of the object stage.

Preferably, a second limiting block is fixed at the front end of the second mounting plate, and a sliding plate is fixed at the front end of the objective table through screws.

The invention has the technical effects and advantages that: compared with the prior art, the laser welding seam inspection device for the magnesium alloy plate provided by the invention has the following advantages:

1. according to the invention, the first lead screw is driven to rotate by the first servo motor, the first lead screw drives the first movable block to move left and right along the sliding groove, the ultrasonic flaw detector body is driven to move left and right, the second lead screw is driven to rotate by the second servo motor, the second lead screw drives the second movable block to move back and forth, the mounting frame is driven to move back and forth, the ultrasonic flaw detector body is driven to move back and forth, and the ultrasonic flaw detector body can detect the welding seam of any position of a workpiece on the objective table, so that the structure is simple, the automatic movement is realized, and the working efficiency is high;

2. according to the automatic blanking device, the first air cylinder pushes the material blocking plate upwards to extend out of the objective table, so that a product on the objective table is blocked, the second air cylinder pushes the material clamping plate, so that the product is clamped on the objective table under the action of the material clamping plate and the first mounting plate, the third air cylinder pushes the material pushing plate forwards after detection is finished, the material pushing plate pushes the product away from the objective table, and then the product slides down along the material sliding plate, so that automatic blanking is realized, and the working efficiency is improved.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged view of the invention at A;

FIG. 3 is an enlarged view of the invention at B;

FIG. 4 is a first perspective view of the present invention;

FIG. 5 is a second perspective view of the present invention;

FIG. 6 is an enlarged view of the invention at C.

Reference numerals: 1. a frame; 2. an object stage; 3. a first mounting plate; 4. a second mounting plate; 5. a mounting frame; 6. a forward-backward movement mechanism; 601. a first fixing plate; 602. a second servo motor; 603. a second lead screw; 604. a second fixing plate; 605. a second moving block; 7. a first servo motor; 8. a first lead screw; 9. a first moving block; 10. a slider; 11. a chute; 12. an ultrasonic flaw detector body; 13. a stock stop mechanism; 131. a first cylinder; 132. a striker plate; 133. a guide bar; 134. a first stopper; 14. a second cylinder; 15. a material clamping plate; 16. a third mounting plate; 17. a third cylinder; 18. a material pushing plate; 19. a second limiting block; 20. a material sliding plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The specific embodiments described herein are merely illustrative of the invention and do not delimit the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1-6, the invention provides a laser welding seam inspection device for magnesium alloy plates, which comprises a frame 1, wherein an object stage 2 is fixed at the upper end of the frame 1, a first mounting plate 3 and a second mounting plate 4 are respectively fixed at the left side and the right side of the object stage 2, the first mounting plate 3 and the second mounting plate 4 are connected with a mounting frame 5 in a sliding manner through a linear rail, and a front-back movement mechanism 6 is arranged at the left side of the mounting frame 5;

as shown in fig. 1-6, the forward-backward movement mechanism 6 includes a first fixing plate 601, the first fixing plate 601 is fixed at the rear side of the first mounting plate 3, a second servo motor 602 is fixed on the first fixing plate 601 through a bolt, a second lead screw 603 is fixed at the end of an output shaft of the second servo motor 602, a second fixing plate 604 is rotatably connected to an end of the second lead screw 603 far away from the second servo motor 602 through a bearing, the second fixing plate 604 is fixed at the front end of the first mounting plate 3, a second moving block 605 is connected to the second lead screw 603 in a threaded transmission manner, and the second moving block 605 is fixed at the lower end of the left side of the mounting frame 5, so that forward and backward movement of the mounting frame 5 is realized, the structure is simple;

as shown in fig. 1 to 6, a first servo motor 7 is fixed on the right side of the upper end of the mounting frame 5 through a bolt, a first lead screw 8 is fixed on the end portion of an output shaft of the first servo motor 7, one end of the first lead screw 8, which is far away from the first servo motor 7, is rotatably connected with the left end of the mounting frame 5 through a bearing, and a first moving block 9 is connected to the first lead screw 8 in a threaded transmission manner. The two sides of the first moving block 9 are fixed with sliding blocks 10, the inner wall of the mounting rack 5 is provided with a sliding groove 11 matched with the sliding blocks 10, the sliding blocks 10 slide in the sliding groove 11, the lower end of the first moving block 9 is fixed with an ultrasonic flaw detector body 12, and the ultrasonic flaw detector body 12 is positioned above the objective table 2;

as shown in fig. 1-6, a material blocking mechanism 13 is arranged on the front side of the object stage 2, the material blocking mechanism 13 includes a first air cylinder 131, the first air cylinder 131 is fixed on the lower side of the front end of the object stage 2 through a bolt, a material blocking plate 132 is fixed on the end portion of a piston rod of the first air cylinder 131, the material blocking plate 132 penetrates through the front side of the object stage 2, in order to guide the material blocking plate 132 when sliding up and down, guide rods 133 are fixed on two sides of the bottom end of the material blocking plate 132, the guide rods 133 penetrate through the lower side of the object stage 2 and extend to the lower side, in order to avoid the guide rods 133 sliding out of the object stage 2 when sliding down, a first limiting block 134 is welded on the end portion of the lower end of the guide rods 133, and the first limiting block 134;

as shown in fig. 1-6, a second cylinder 14 is fixed in the middle of the second mounting plate 4 by a bolt, a material clamping plate 15 is fixed at the end of a piston rod of the second cylinder 14, the material clamping plate 15 is located at the upper side of the object stage 2 to clamp a product on the object stage 2, a third mounting plate 16 is fixed at the upper end of the rear side of the object stage 2, a third cylinder 17 is fixed in the middle of the rear side of the third mounting plate 16 by a bolt, a material pushing plate 18 is fixed at the end of a piston rod of the third cylinder 17, the material pushing plate 18 is located at the upper end of the object stage 2 to push the detected product away from the object stage 2, automatic blanking is realized, the working efficiency is improved, a second limiting block 19 is fixed at the end of the front end of the second mounting plate 4 to prevent the mounting frame 5 from sliding forward and sliding out of the second mounting plate 4, the protection effect, the front end tip of objective table 2 is fixed with smooth flitch 20 through the screw, makes things convenient for the product to slide down objective table 2.

The working principle is as follows: the electric parts of the device are all powered by an external power supply, firstly, a workpiece to be detected is placed on the objective table 2, the front side of the workpiece is in close contact with a material baffle 132 extending out of the objective table 2, then, a piston rod of the second air cylinder 14 pushes the material clamping plate 15 forwards, and then the material clamping plate 15 pushes the workpiece, and the workpiece is clamped on the objective table 2 under the action of the first mounting plate 3 and the material clamping plate 15;

then the second servo motor 602 drives the second lead screw 603 to rotate, the second lead screw 603 drives the second moving block 605 to move back and forth along the second lead screw 603, the second moving block 605 drives the mounting rack 5 to move back and forth on the objective table 2, and the mounting rack 5 drives the ultrasonic flaw detector body 12 to move back and forth to reach the welding seam of the workpiece and stop moving;

then the first servo motor 7 drives the first lead screw 8 to rotate, the first lead screw 8 drives the first moving block 9 to slide left and right in the mounting rack 5 along the sliding groove 11, and the first moving block 9 drives the ultrasonic flaw detector body 12 to move left and right above the welding seam of the workpiece, so that the inspection of the welding seam is realized;

after the inspection is finished, the second cylinder 14 drives the material clamping plate 15 to retract to the original position, then the first cylinder 131 drives the material blocking plate 132 to move downwards until the material blocking plate 132 retracts to the inside of the objective table 2, then the third cylinder 17 pushes the material pushing plate 18 forwards, then the material pushing plate 18 pushes a workpiece forwards, then the workpiece is pushed away from the objective table 2, then the workpiece slides down along the material sliding plate 20, automatic blanking is achieved, and the whole process is finished.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. The utility model provides a magnesium alloy panel laser welding seam verifying attachment, includes frame (1), its characterized in that: an object stage (2) is fixed at the upper end of the rack (1), a first mounting plate (3) and a second mounting plate (4) are respectively fixed at the left side and the right side of the object stage (2), the first mounting plate (3) and the second mounting plate (4) are connected with a mounting frame (5) through linear rails in a sliding mode, a front-back moving mechanism (6) is arranged at the left side of the mounting frame (5), a first servo motor (7) is fixed at the right side of the upper end of the mounting frame (5) through bolts, a first lead screw (8) is fixed at the end portion of an output shaft of the first servo motor (7), one end, far away from the first servo motor (7), of the first lead screw (8) is rotatably connected with the left end of the mounting frame (5) through a bearing, and a first moving block (9) is in threaded transmission connection with the first lead;

the ultrasonic flaw detector is characterized in that sliding blocks (10) are fixed to two sides of the first moving block (9), sliding grooves (11) matched with the sliding blocks (10) are formed in the inner wall of the mounting frame (5), the sliding blocks (10) slide in the sliding grooves (11), an ultrasonic flaw detector body (12) is fixed to the lower end of the first moving block (9), the ultrasonic flaw detector body (12) is located above the objective table (2), and a material blocking mechanism (13) is arranged on the front side of the objective table (2).

2. The magnesium alloy plate laser welding seam inspection device according to claim 1, characterized in that: the front-back moving mechanism (6) comprises a first fixing plate (601), the first fixing plate (601) is fixed on the rear side of the first mounting plate (3), a second servo motor (602) is fixed on the first fixing plate (601) through a bolt, a second lead screw (603) is fixed on the end portion of an output shaft of the second servo motor (602), one end portion, far away from the second servo motor (602), of the second lead screw (603) is rotatably connected with a second fixing plate (604) through a bearing, the second fixing plate (604) is fixed at the front end of the first mounting plate (3), a second moving block (605) is connected to the second lead screw (603) in a threaded transmission mode, and the second moving block (605) is fixed at the lower end of the left side of the mounting frame (5).

3. The magnesium alloy plate laser welding seam inspection device according to claim 1, characterized in that: the material blocking mechanism (13) comprises a first air cylinder (131), the first air cylinder (131) is fixed on the lower side of the front end of the objective table (2) through a bolt, a material blocking plate (132) is fixed to the end portion of a piston rod of the first air cylinder (131), and the material blocking plate (132) penetrates through the front side of the objective table (2).

4. The magnesium alloy plate laser welding seam inspection device according to claim 3, characterized in that: the bottom both sides of striker plate (132) are fixed with guide bar (133), guide bar (133) run through the downside of objective table (2) and extend to the below.

5. The magnesium alloy plate laser welding seam inspection device according to claim 4, wherein: the lower extreme tip welding of guide bar (133) has first stopper (134), first stopper (134) are located the front side below of objective table (2).

6. The magnesium alloy plate laser welding seam inspection device according to claim 1, characterized in that: the middle of the second mounting plate (4) is fixed with a second cylinder (14) through a bolt, the end part of a piston rod of the second cylinder (14) is fixed with a material clamping plate (15), and the material clamping plate (15) is located on the upper side of the objective table (2).

7. The magnesium alloy plate laser welding seam inspection device according to claim 1, characterized in that: the rear side upper end of objective table (2) is fixed with third mounting panel (16), be fixed with third cylinder (17) through the bolt in the middle of the rear side of third mounting panel (16), the piston rod end of third cylinder (17) is fixed with scraping wings (18), scraping wings (18) are located the upper end of objective table (2).

8. The magnesium alloy plate laser welding seam inspection device according to claim 1, characterized in that: the front end of the second mounting plate (4) is fixed with a second limiting block (19), and the front end of the objective table (2) is fixed with a sliding plate (20) through screws.