Laser welding device for automobile parts

Abstract

The utility model discloses a laser welding device for automobile parts, which relates to the field of automobile manufacturing and comprises a machining table, a workpiece table is slidably connected to the top of the machining table, a plurality of sliding rods arranged in a rectangular array are slidably connected to the inside of the workpiece table, and one part of the top end of each sliding rod extends to be exposed above the workpiece table. The bottom of each sliding rod is provided with a spring, the sliding rods are elastically connected with the workpiece table through the springs, annular grooves are formed in the outer sides of the sliding rods at equal intervals, the interior of the workpiece table is slidably connected with a drawing plate, the drawing plate can be drawn out from one side of the workpiece table, and strip-shaped grooves are formed in the drawing plate at equal intervals. The sliding rod can form a specific placement area adaptive to the shape of a part according to the shape of the workpiece so as to adapt to the machining requirements of different workpieces, accurate positioning of the sliding rod is ensured after the drawing plate is inserted, machining errors caused by shaking or deviation in the machining process are effectively avoided, and the machining precision is remarkably improved.

Description

Technical Field

[0001] This utility model relates to the field of automobile manufacturing, and in particular to a laser welding device for automobile parts. Background Technology

[0002] In automotive manufacturing, some plastic parts are laser-welded together. The heat generated by the laser beam melts the plastic contact surfaces, bonding the molded parts together. During laser welding, the parts need to be placed on a workpiece stage with corresponding grooves to ensure accurate positioning during the welding process. However, this method means that a single workpiece stage can only accommodate one type of part shape. When welding parts of different shapes, a different workpiece stage with corresponding grooves must be used, which increases production costs and reduces production efficiency.

[0003] Furthermore, changing the workpiece stage is usually a cumbersome process, requiring the disassembly and installation of multiple components, which can easily cause damage or wear to the workpiece stage. At the same time, because the shape and size of the workpiece stage are fixed, it cannot be fine-tuned according to the actual shape of the parts, which to some extent limits the processing accuracy and flexibility of laser welding. Utility Model Content

[0004] The purpose of this invention is to provide a laser welding device for automotive parts, which solves the problem of limited workpiece stage adaptability in existing laser welding devices.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows: A laser welding device for automotive parts includes a processing table, a workpiece table slidably connected to the top of the processing table, and multiple sliding rods arranged in a rectangular array slidably connected inside the workpiece table. A portion of the top of each sliding rod extends above the workpiece table. A spring is provided at the bottom of each sliding rod, and the sliding rod is elastically connected to the workpiece table via the spring. Annular grooves are equidistantly provided on the outer side of each sliding rod. A pull-out plate is slidably connected inside the workpiece table, and the pull-out plate can be pulled out from one side of the workpiece table. Equidistant slots are provided inside the pull-out plate, with one end of each slot extending to the edge of the pull-out plate to form an opening. When the pull-out plate is inserted into the workpiece table, each sliding rod can slide into its corresponding slot. Curved protrusions are provided on both inner walls of the slots, and these protrusions cooperate with the annular grooves on the sliding rods to position the sliding rods after the pull-out plate is inserted.

[0006] Preferably, a pressure plate is provided above the sliding path of the workpiece stage, and a glass plate is provided inside the pressure plate. Cylinders are installed between the top of the processing table and the four corners of the pressure plate. The output end of the cylinder is fixedly connected to the pressure plate. The cylinder drives the pressure plate to rise and fall to press the parts on the workpiece stage. A welding assembly is installed on the top of the processing table. The welding assembly is used to perform laser welding on the parts on the workpiece stage. The cylinder drives the pressure plate to rise and fall to press the parts on the workpiece stage. The glass plate is set so as not to affect the passage of the laser.

[0007] Preferably, the welding assembly includes a bracket, a dual-axis moving assembly, and a welding head. The bracket is fixedly connected to the top of the processing table, and the dual-axis moving assembly is installed on the top of the bracket. The welding head is installed at the moving end of the dual-axis moving assembly. The welding head is driven by the dual-axis moving assembly to move independently or simultaneously in the X-axis and Y-axis directions, thereby achieving precise welding of parts on the workpiece table.

[0008] Preferably, a guide rail is fixedly connected to the top of the processing table, and a linear motor is slidably connected to the outside of the guide rail. The workpiece table is fixedly connected to the top of the linear motor. Driven by the linear motor, the workpiece table can move linearly along the guide rail in a set direction.

[0009] Preferably, a positioning pin is slidably inserted into one side of the top of the processing table, and an oblong hole is opened on the surface of the pull plate. When the pull plate is inserted into the workpiece table, the oblong hole corresponds to the position of the positioning pin. After the pull plate is inserted into the workpiece table and reaches the predetermined position, the positioning pin can be inserted on the workpiece table to make the positioning pin pass through the oblong hole, thereby restricting the pull plate's movement and achieving stable positioning of the pull plate.

[0010] Preferably, the bottom of the positioning pin is chamfered to facilitate its smooth insertion into the oblong hole on the pull plate and reduce resistance during insertion.

[0011] Preferably, the two corners of the pull-out plate on the insertion side are rounded, which facilitates smooth contact between the pull-out plate and the edge of the workpiece stage when it is inserted, reducing friction and resistance during insertion.

[0012] Preferably, a pull ring is provided on one side of the pull plate, which makes it easy for the operator to manually pull the pull plate so that the pull plate can be easily pulled out from the workpiece table.

[0013] Compared with the prior art, the advantages of this utility model are as follows:

[0014] 1. This utility model, through the cooperation of the slide rod and the pull plate, allows the slide rod to form a specific placement area that adapts to the shape of the parts according to the shape of the workpiece, so as to meet the processing requirements of different workpieces. After the pull plate is inserted, it ensures the precise positioning of the slide rod, effectively avoiding processing errors caused by shaking or offset during the processing, and significantly improving the processing accuracy.

[0015] 2. This utility model reduces the cost and time of changing tooling fixtures by using the cooperation of the sliding rod and the pull plate, thereby improving production efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0017] Figure 2 This is a schematic diagram of the pressure plate structure of this utility model.

[0018] Figure 3 This is a schematic diagram of the workpiece stage structure of this utility model.

[0019] Figure 4 This is a schematic diagram of the pull-out plate structure of this utility model.

[0020] Figure 5 This is a schematic diagram of the slide bar structure of this utility model.

[0021] Reference numerals: 1. Machining table; 2. Workpiece table; 3. Slide rod; 4. Spring; 5. Annular groove; 6. Pull-out plate; 7. Strip groove; 8. Curved convex strip; 9. Pressure plate; 10. Glass plate; 11. Cylinder; 12. Welding assembly; 13. Bracket; 14. Dual-axis moving assembly; 15. Welding head; 16. Guide rail; 17. Linear motor; 18. Positioning pin; 19. Waist-shaped hole; 20. Pull ring. Detailed Implementation

[0022] 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.

[0023] Please see Figures 1 to 5 This embodiment provides a laser welding device for automotive parts, including a processing table 1, a workpiece table 2 slidably connected to the top of the processing table 1, and multiple sliding rods 3 arranged in a rectangular array slidably connected inside the workpiece table 2. The top part of the sliding rod 3 extends out above the workpiece table 2, and a spring 4 is provided at the bottom of each sliding rod 3. The sliding rod 3 is elastically connected to the workpiece table 2 through the spring 4. Annular grooves 5 are provided at equal intervals on the outer side of the sliding rod 3. A pull plate 6 is slidably connected inside the workpiece table 2. The pull plate 6 can be pulled out from one side of the workpiece table 2. Strip grooves 7 are provided at equal intervals inside the pull plate 6. One end of the strip groove 7 extends to the edge of the pull plate 6 to form an opening. When the pull plate 6 is inserted into the workpiece table 2, each sliding rod 3 can slide into the corresponding strip groove 7. Curved protrusions 8 are provided on both sides of the inner wall of the strip groove 7. The curved protrusions 8 cooperate with the annular grooves 5 on the sliding rod 3 to position the sliding rod 3 after the pull plate 6 is inserted.

[0024] During the welding preparation process, the slide bar 3 can slide and rise inside the workpiece table 2 by removing the pull plate 6. The parts to be welded are placed on the workpiece table 2 and pressed down. The parts, according to their own shape, compress the slide bar 3 in the corresponding area, lower it to be flush with the surface of the workpiece table 2, and compress the spring 4. Then, the pull plate 6 is pushed in to make the slide bar 3 slide into the strip groove 7 and the annular groove 5 is locked on the curved protrusion 8, thereby positioning the slide bar 3 and forming a specific placement area adapted to the shape of the parts, avoiding the parts from moving or misaligning during welding. When it is necessary to replace parts of other shapes, simply remove the pull plate 6 again, place the other parts of other shapes, compress the slide bar 3 again, and repeat the above steps.

[0025] Above the sliding path of the workpiece table 2 is a pressure plate 9, and inside the pressure plate 9 is a glass sheet 10. Cylinders 11 are installed between the top of the processing table 1 and the four corners of the pressure plate 9. The output end of the cylinder 11 is fixedly connected to the pressure plate 9. The cylinder 11 drives the pressure plate 9 to rise and fall to press the parts on the workpiece table 2. A welding assembly 12 is installed on the top of the processing table 1. The welding assembly 12 is used to perform laser welding on the parts on the workpiece table 2.

[0026] Cylinder 11 drives pressure plate 9 to rise and fall to press down the parts on workpiece stage 2. Glass plate 10 is set to not affect the passage of laser. Welding assembly 12 is used to perform laser welding on the parts on workpiece stage 2.

[0027] The welding assembly 12 includes a support 13, a dual-axis moving assembly 14, and a welding head 15. The support 13 is fixedly connected to the top of the processing table 1, and the dual-axis moving assembly 14 is installed on the top of the support 13. The welding head 15 is installed at the moving end of the dual-axis moving assembly 14. The welding head 15 is equipped with a laser generator or connected to an external laser source to generate a laser beam for welding operations. The dual-axis moving assembly 14 includes mutually perpendicular moving axes. Each moving axis is equipped with a drive motor and a transmission mechanism. Through the cooperation of the drive motor and the transmission mechanism, the dual-axis moving assembly 14 can drive the welding head 15 to move independently or simultaneously in the X-axis and Y-axis directions, thereby realizing the precise welding of parts on the workpiece table 2.

[0028] A guide rail 16 is fixedly connected to the top of the processing table 1, and a linear motor 17 is slidably connected to the outside of the guide rail 16. The workpiece table 2 is fixedly connected to the top of the linear motor 17. Driven by the linear motor 17, the workpiece table 2 can move linearly along the set direction on the guide rail 16, thereby realizing the precise adjustment of the position of the parts on the workpiece table 2.

[0029] A positioning pin 18 is slidably inserted into one side of the top of the processing table 1. A waist-shaped hole 19 is opened on the surface of the pull plate 6. When the pull plate 6 is inserted into the workpiece table 2, the waist-shaped hole 19 corresponds to the position of the positioning pin 18. After the pull plate 6 is inserted into the workpiece table 2 and reaches the predetermined position, the positioning pin 18 can be inserted on the workpiece table 2 to make the positioning pin 18 pass through the waist-shaped hole 19, thereby restricting the pull plate 6 from moving and achieving stable positioning of the pull plate 6. This ensures that the pull plate 6 will not move due to external force during the welding process, thus ensuring the accuracy and stability of the welding.

[0030] The bottom of the positioning pin 18 is chamfered, which makes it easy for the positioning pin 18 to be smoothly inserted into the waist-shaped hole 19 on the pull plate 6, reducing the resistance during insertion.

[0031] The two corners of the pull-out plate 6 on the insertion side are rounded, which makes it easy for the pull-out plate 6 to make smooth contact with the edge of the workpiece table 2 when it is inserted into the workpiece table 2, reducing friction and resistance during insertion.

[0032] A pull ring 20 is provided on one side of the pull plate 6, which makes it easy for the operator to manually pull the pull plate 6 so that the pull plate 6 can be easily pulled out from the workpiece table 2.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automobile part laser welding device, comprising a machining table (1), a workpiece table (2) is slidably connected to the top of the machining table (1), characterized in that, The workpiece stage (2) is internally connected to a plurality of sliding rods (3) arranged in a rectangular array. The top part of the sliding rods (3) extends out above the workpiece stage (2). Each sliding rod (3) is provided with a spring (4) at its bottom. The sliding rods (3) are elastically connected to the workpiece stage (2) through the springs (4). Circular grooves (5) are provided at equal intervals on the outer side of the sliding rods (3). A pull-out plate (6) is internally connected to the workpiece stage (2). The pull-out plate (6) can be accessed from the workpiece stage (2). Pull out from one side. The inside of the pull plate (6) is provided with strip grooves (7) at equal intervals. One end of the strip groove (7) extends to the edge of the pull plate (6) to form an opening. When the pull plate (6) is inserted into the workpiece table (2), each slide rod (3) can slide into the corresponding strip groove (7). The inner walls on both sides of the strip groove (7) are provided with curved protrusions (8). The curved protrusions (8) cooperate with the annular grooves (5) on the slide rod (3) to position the slide rod (3) after the pull plate (6) is inserted.

2. The automotive parts laser welding apparatus according to claim 1, wherein, A pressure plate (9) is provided above the sliding path of the workpiece table (2). A glass plate (10) is provided inside the pressure plate (9). A cylinder (11) is installed between the top of the processing table (1) and the four corners of the pressure plate (9). The output end of the cylinder (11) is fixedly connected to the pressure plate (9). The cylinder (11) drives the pressure plate (9) to rise and fall to press the parts on the workpiece table (2). A welding assembly (12) is installed on the top of the processing table (1). The welding assembly (12) is used to perform laser welding on the parts on the workpiece table (2).

3. The automotive part laser welding apparatus of claim 2, wherein, The welding assembly (12) includes a bracket (13), a dual-axis moving assembly (14) and a welding head (15). The top of the processing table (1) is fixedly connected to the bracket (13), the top of the bracket (13) is equipped with the dual-axis moving assembly (14), and the moving end of the dual-axis moving assembly (14) is equipped with the welding head (15).

4. The automotive part laser welding apparatus of claim 1, wherein, The top of the processing table (1) is fixedly connected to a guide rail (16), and a linear motor (17) is slidably connected to the outside of the guide rail (16). The workpiece table (2) is fixedly connected to the top of the linear motor (17).

5. The automotive parts laser welding apparatus of claim 1, wherein, The processing table (1) has a locating pin (18) slidably inserted on one side of the top. The surface of the pull plate (6) has a waist-shaped hole (19). When the pull plate (6) is inserted into the workpiece table (2), the waist-shaped hole (19) corresponds to the position of the locating pin (18).

6. The automotive parts laser welding apparatus according to claim 5, wherein, The bottom of the positioning pin (18) is chamfered.

7. The automotive parts laser welding apparatus of claim 1, wherein, The two corners of the pull-out plate (6) on the inserted side are rounded.

8. The automotive parts laser welding apparatus of claim 1, wherein, A pull ring (20) is provided on one side of the pull plate (6).

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