A laser beam welding system

Abstract

The application relates to the field of welding, in particular to a laser beam welding system. The laser beam welding system comprises two supporting plates arranged left and right, each of which is fixed with an L-shaped plate, and the inner side right angle of the L-shaped plate is provided with an inclined surface. The lower side of the supporting plate is fixed with a connecting seat, and the connecting seat is fixed with an ultrasonic generator. The front and rear ends of the lower side of each supporting plate are fixed with cylinders, and the upper and lower ends of each cylinder are provided with circular pieces. Two sliding seats are arranged left and right, and the two cylinders on the same supporting plate are vertically and slidingly connected to the sliding seats on the corresponding sides. The upper and lower ends of each cylinder are sleeved with half-rubber pads, the two half-rubber pads are arranged on the upper and lower sides of the corresponding sliding seats respectively, the two half-rubber pads are attached to the two circular pieces respectively, the half-rubber pad is a half-circular ring, two tabs are fixed on the half-rubber pad, and a blocking pin is inserted between the two tabs. The plate to be welded can be closely attached to the supporting plate, so that the stability during welding is guaranteed.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of welding, more particularly to a laser beam welding system. BACKGROUND

[0002] In the field of laser beam welding, one of the key factors to ensure the quality of welding is the stability of the plate being welded during the welding process. Existing laser beam welding systems face many challenges in actual operation, especially in the aspect of closely fitting the plate to be welded on the support plate.

[0003] The current common laser beam welding equipment, the support plate structure design is often relatively simple, lack of can effectively adjust the plate and the mechanism of the support plate fit degree. In the face of different thickness, shape of plate, it is difficult to ensure that the plate and the support plate between seamless close fit. This leads to in the welding process, the plate is prone to shaking, displacement and other instability. When the plate can not closely fit the support plate, the laser beam in the plate welding part, energy transfer is uneven, easy to cause the fusion depth of the welding part is inconsistent, the quality of the weld is uneven, appear virtual welding, welding and other problems. SUMMARY

[0004] In order to overcome the shortcomings of the prior art, the present application provides a laser beam welding system, which has the beneficial effect of closely fitting the plate to be welded on the support plate, ensuring the stability during welding.

[0005] A laser beam welding system, comprising two support plates, the two support plates are arranged left and right, each support plate is fixed with an L-shaped plate, and the inner side of the L-shaped plate is provided with an inclined surface at the right angle.

[0006] The lower side of the support plate is fixed with a connecting seat, and the connecting seat is fixed with an ultrasonic generator.

[0007] The front and rear ends of the lower side of each support plate are fixed with a cylinder, and the upper and lower ends of each cylinder are provided with a circular plate.

[0008] The upper and lower ends of each cylinder are sleeved with a half rubber pad, and the two half rubber pads are located on the upper and lower sides of the corresponding slide respectively.

[0009] Further comprising a bottom plate, the bottom plate is provided with a track, and the two slides are respectively connected to the two ends of the track.

[0010] The left and right ends of the bottom plate are fixed with two telescopic rods two, and the movable ends of the two telescopic rods two are respectively fixed on the two slides.

[0011] The upper side of each L-shaped plate is fixed with a support, two guide rods are vertically and slidably connected to the support, the lower ends of the two guide rods are fixed with a wheel frame, the front and rear ends of the wheel frame are rotatably connected with rotating wheels, the front and rear ends of the wheel frame are fixed with motors one, the output shafts of the motors one are fixed on the corresponding rotating wheels, an extension rod one is fixed on the support, and the movable end of the extension rod one is fixed on the wheel frame.

[0012] The rear part of the bottom plate is fixed with a hollow column, a solid column is vertically and slidably connected to the hollow column, the rear part of the bottom plate is fixed with an extension rod three, the movable end of the extension rod three is fixed on the solid column, the upper part of the solid column is slidably connected with a cross bar in the front and rear direction, the front part of the cross bar is fixed with a cross column, a sliding block is transversely and slidably connected to the cross column, and the lower end of the sliding block is fixed with a laser beam welding gun.

[0013] The rear part of the cross bar is fixed with a motor seat, a motor two is fixed on the motor seat, the output shaft of the motor two is fixed with a screw rod, and the screw rod is threadedly connected with the solid column.

[0014] The upper side of the sliding block is fixed with a convex pin, the front part of the cross bar is fixed with a motor bracket, a motor three is fixed on the motor bracket, the output shaft of the motor three is fixed with a yoke, a strip-shaped slot is arranged on the yoke, and the convex pin is inserted into the strip-shaped slot. BRIEF DESCRIPTION OF DRAWINGS

[0015] The application will be further described in detail below in combination with the drawings and specific implementation methods.

[0016] Figure 1 Structure diagram of a laser beam welding system Figure 1 ;

[0017] Figure 2 Structure diagram of a laser beam welding system Figure 2 ;

[0018] Figure 3 Structure diagram of a laser beam welding system Figure 3 ;

[0019] Figure 4 Structure diagram of a laser beam welding system Figure 4 ;

[0020] Figure 5 Structure diagram of a supporting plate Figure 1 ;

[0021] Figure 6 Structure diagram of a supporting plate Figure 2 ;

[0022] Figure 7 Structure diagram of a supporting plate Figure 3 ;

[0023] Figure 8 Structure diagram of the stop pin Figure 1 ;

[0024] Figure 9 Structure diagram of the stop pin Figure 2 ;

[0025] Figure 10 Structure diagram of the base plate

[0026] Figure 11 Structure diagram of the crossbar

[0027] Figure 12 Structure diagram of the slider Figure 1 ;

[0028] Figure 13 Structure diagram of the slider Figure 2 .

[0029] In the figure: the supporting plate 101; the inclined plane 102; the L-shaped plate 103; the support 104; the telescopic rod 105; the guide rod 106; the wheel carrier 107; the rotating wheel 108; the motor 109; the ultrasonic generator 110; the connecting seat 111;

[0030] The stop pin 201; the cylinder 202; the tab 203; the semi-rubber pad 204; the round plate 205;

[0031] The base plate 301; the sliding seat 302; the telescopic rod 303; the track 304;

[0032] The crossbar 401; the screw rod 402; the motor 403; the motor seat 404; the telescopic rod 405; the hollow column 406; the solid column 407;

[0033] The slider 501; the laser beam welding gun 502; the shift fork 503; the cross column 504; the motor rack 505; the motor 506; the convex pin 507. DETAILED DESCRIPTION

[0034] As Figures 5-7 shown;

[0035] Since the laser beam welding system comprises two supporting plates 101 arranged left and right, each supporting plate 101 is connected with an L-shaped plate 103 through bolts, and the inner side of the L-shaped plate 103 is provided with a slope 102, when two plates need to be welded together, the two plates are placed on the two supporting plates 101 respectively, and then the two plates are pushed to approach the two L-shaped plates 103 respectively, so that one side of the two plates is pressed against the slope 102, and the slope 102 can be in contact with plates of different thicknesses, when the plates are pressed against the slope 102, the slope 102 provides a downward force to the plates, so that the plates can be closely attached to the supporting plate 101, facilitating the next step of attaching the plates to the two supporting plates 101, and ensuring the stability during welding.

[0036] As shown in Figures 5-7 ;

[0037] Since the lower side of the supporting plate 101 is welded with a connecting seat 111, the connecting seat 111 is connected with an ultrasonic generator 110 through bolts, the ultrasonic generator 110 can emit ultrasonic waves to drive the supporting plate 101 to vibrate up and down at high frequency, and in turn drive the plates attached to the supporting plate 101 to vibrate up and down at high frequency, after the two plates are butted together, the laser beam is shot to the butt joint gap of the two plates, so that the two plates are welded together under the condition of high-frequency vibration;

[0038] When the two plates vibrate under the driving of the ultrasonic waves, first, the vibration greatly promotes the mutual diffusion and fusion of the materials. The high-frequency vibration greatly improves the activity of the molecules on the plate attachment surface, and accelerates the diffusion speed between the molecules, which can realize deep fusion in a shorter time and form a more uniform and continuous welding interface, reducing the generation of welding defects.

[0039] Secondly, the vibration of the plates helps to improve the quality of the weld. The energy generated by the vibration makes it easier for bubbles and impurities at the weld to be removed. The gas that may exist in the weld escapes rapidly under the action of vibration, avoiding the formation of pores;

[0040] Tiny impurity particles will also be shaken off due to vibration, so that the purity of the weld is improved, reducing the probability of defects such as slag inclusion in the weld, and in turn improving the overall quality and reliability of the weld.

[0041] The vibration significantly enhances the strength of the welded joint, as the molecular fusion is more complete, the crystal structure of the weld area is optimized, and the connection formed is more firm. When subjected to external forces, the welded part can better disperse stress and effectively resist tensile, shear and other forces, so that the plates after welding are more stable and durable in actual use, meeting the requirements of various harsh working conditions on the welding strength.

[0042] As shown in Figures 5-9 ;

[0043] Since the front and rear ends of the lower side of each of the supporting plates 101 are connected with the cylinders 202 through bolts, the upper and lower ends of each of the cylinders 202 are provided with the round plates 205, the two sliding seats 302 are arranged left and right, the two cylinders 202 on the same supporting plate 101 are vertically slidably connected to the sliding seats 302 on the corresponding sides, and the two supporting plates 101 can slide up and down relative to the sliding seats 302 through the two cylinders 202 thereon, so that the two supporting plates 101 can vibrate up and down more conveniently.

[0044] In order to ensure that the cylinders 202 vertically slide in the sliding seats 302 more smoothly and stably, the inner slide way of the sliding seat 302 is carefully designed and polished. The surface of the slide way is processed by high-precision processing technology, so that the roughness is extremely low, the friction when the cylinder 202 slides is effectively reduced, the energy loss is reduced, and it is ensured that the supporting plate 101 can efficiently transmit the vibration generated by the ultrasonic generator 110 to the plate. At the same time, the material of the sliding seat 302 is selected to be high-strength and wear-resistant alloy steel, which can not only withstand the great impact force generated by the supporting plate 101 and the plate during high-frequency vibration, but also ensure that the precision of the slide way does not change obviously after long-term use, thereby prolonging the service life of the equipment.

[0045] As shown in Figures 8-10 ;

[0046] Since the upper and lower ends of each of the cylinders 202 are sleeved with the half-rubber pads 204, the two half-rubber pads 204 are respectively located on the upper and lower sides of the corresponding sliding seat 302, and the two half-rubber pads 204 are respectively attached to the two round plates 205. The half-rubber pad 204 is a half-ring, and two tabs 203 are integrally formed on the half-rubber pad 204, and the blocking pin 201 is inserted between the two tabs 203. The two half-rubber pads 204 on the cylinder 202 are respectively located on the upper and lower sides of the sliding seat 302, and when the supporting plate 101 and the two cylinders 202 vibrate up and down, the two half-rubber pads 204 are elastically deformed, and the two half-rubber pads 204 can also help the supporting plate 101 and the two cylinders 202 to return to the original position. After the blocking pin 201 on the two tabs 203 is removed, the half-rubber pad 204 can be disassembled and replaced, and then half-rubber pads 204 with different degrees of softness and hardness can be replaced.

[0047] According to different welding materials and process requirements, the hardness of the semi-rubber pad 204 can be changed flexibly, which can significantly optimize the welding effect of the equipment. For example, when welding materials with soft texture and easy deformation, a semi-rubber pad 204 with lower hardness is selected. The stronger elasticity of the semi-rubber pad 204 can further buffer the impact force generated when the support plate 101 and the cylinder 202 vibrate, preventing the plate from deforming due to excessive stress and ensuring the precision and quality of welding. When welding materials with high hardness and high vibration energy transmission requirements, a semi-rubber pad 204 with higher hardness is replaced. The semi-rubber pad 204 not only provides a certain buffering protection to the equipment during vibration, but also allows more vibration energy to be effectively transmitted to the plate, promoting the smooth progress of welding.

[0048] This convenient semi-rubber pad 204 replacement design also greatly improves the maintenance efficiency of the equipment. In daily production, as the use time increases, the semi-rubber pad 204 will inevitably show signs of wear and tear. By simply removing the retaining pin 201, the semi-rubber pad 204 can be quickly removed and replaced with a new one. The entire process does not require the use of complex tools, and operators can complete the operation after simple training. This not only reduces the downtime of the equipment and reduces maintenance costs, but also ensures that the equipment is always in the best working condition.

[0049] As shown in Figure 10 ;

[0050] Since the laser beam welding system also includes a base plate 301, the base plate 301 is provided with a track 304, and two slides 302 are respectively connected to the two ends of the track 304. The two slides 302 can slide left and right on the track 304, thereby driving the two support plates 101 to move closer or further apart. When the two plates are respectively fixed on the two support plates 101, driving the two slides 302 to move closer to each other can drive the two plates to move closer to each other, thereby butt joining the two plates together.

[0051] As shown in Figure 10 ;

[0052] Since the left and right ends of the base plate 301 are connected to the telescopic rods two 303 through flanges, the movable ends of the two telescopic rods two 303 are respectively connected to the two slides 302 through flanges. The extension and retraction of the two telescopic rods two 303 can drive the two slides 302 to slide on the track 304.

[0053] As shown in Figures 5-7 ;

[0054] Since the upper side of each of the L-shaped plates 103 is connected with a support 104 through screws, two guide rods 106 are vertically and slidingly connected on the support 104, the lower ends of the two guide rods 106 are welded with wheel frames 107, the front and rear ends of each wheel frame 107 are rotatably connected with a rotating wheel 108, the front and rear ends of each wheel frame 107 are connected with a motor I 109 through bolts, the output shaft of the motor I 109 is connected with the corresponding rotating wheel 108 through a shaft coupling, the support 104 is connected with an extension rod I 105 through a flange, the movable end of the extension rod I 105 is connected with the wheel frame 107 through a flange, the extension and contraction of the extension rod I 105 drives the two guide rods 106 and the wheel frame 107 to slide up and down, and then drives the two rotating wheels 108 to move up and down, and drives the two rotating wheels 108 to press the plate on the upper side of the supporting plate 101, then the two rotating wheels 108 are driven to rotate by the two motors I 109 respectively, and then the two rotating wheels 108 drive the plate to move close to the L-shaped plate 103 through friction, so that the plate is positioned on the inclined surface 102 on the L-shaped plate 103, compared with the traditional manual pushing plate positioning mode, not only saves the labor cost, but also significantly reduces the welding quality problems caused by human operation error, and improves the consistency and yield of the welded products.

[0055] As Figures 10-13 shown;

[0056] Since the rear part of the bottom plate 301 is connected with a hollow column 406 through bolts, a solid column 407 is vertically and slidingly connected on the hollow column 406, the rear part of the bottom plate 301 is connected with an extension rod III 405 through a flange, the movable end of the extension rod III 405 is connected with the solid column 407 through a flange, the upper part of the solid column 407 is slidingly connected with a cross bar 401 in the front and rear directions, the front part of the cross bar 401 is connected with a vertical column 504 through bolts, a sliding block 501 is transversely and slidingly connected on the vertical column 504, the lower end of the sliding block 501 is connected with a laser beam welding gun 502 through bolts, the extension and contraction of the extension rod III 405 can drive the solid column 407 to slide up and down on the hollow column 406, and then drive the cross bar 401, the vertical column 504, the sliding block 501 and the laser beam welding gun 502 to slide up and down, the cross bar 401 can slide forward and backward on the solid column 407, and then drive the sliding block 501 and the laser beam welding gun 502 to move forward and backward, and then the laser beam welding gun 502 can be controlled to move forward and backward, up and down, and then the laser beam welding gun 502 is aligned with the gap between the two plates, and then the laser beam welding gun 502 emits a laser beam to weld the two plates together.

[0057] This flexible multi-dimensional mobile design enables the laser beam welding gun 502 to accurately adapt to various complex welding scenarios. In actual operation, the operator can accurately adjust the position of the laser beam welding gun 502 according to the specific shape, size of the plate, and the requirements of the welding position. For example, for plates with irregular surfaces, by adjusting the lifting of the telescopic rod three 405, the laser beam welding gun 502 can find the optimal welding height in the vertical direction, ensuring that the laser beam can act on the plate gap with appropriate angle and energy density; the forward and backward sliding of the horizontal rod 401 on the solid column 407 allows the laser beam welding gun 502 to move flexibly in the horizontal direction and accurately align with the gaps located at different positions of the plate.

[0058] To further improve the precision and efficiency of welding, the system can also be equipped with an advanced positioning and control system. High-precision displacement sensors are installed on the solid column 407 and the horizontal rod 401 to monitor the position information of the laser beam welding gun 502 in real time and feed it back to the control system. The operator only needs to input the coordinates of the target welding position on the operation interface, and the control system can automatically calculate and drive the movement of the telescopic rod three 405 and the horizontal rod 401 to quickly and accurately adjust the laser beam welding gun 502 to the specified position. This automated positioning method not only greatly reduces the error of manual operation, but also improves the repeatability and consistency of the welding process, ensuring that each welding can meet high-quality standards.

[0059] In addition, the lateral sliding function of the sliding block 501 on the horizontal column 504 adds more flexibility to the welding process. In the case of welding some wider plate gaps or needing to perform horizontal welding, the sliding block 501 can drive the laser beam welding gun 502 to move accurately in the horizontal direction, achieving continuous and uniform welding. By controlling the sliding speed of the sliding block 501 and the emission frequency of the laser beam welding gun 502, welding parameters can be adjusted according to different welding requirements to achieve the desired welding effect.

[0060] As shown in Figure 11 ;

[0061] Since the rear of the horizontal rod 401 is connected to the motor seat 404 by bolts, the motor seat 404 is connected to the motor two 403 by bolts, the output shaft of the motor two 403 is connected to the lead screw 402 by a shaft coupling, and the lead screw 402 is connected to the solid column 407 by screw threads, the lead screw 402 can be driven to rotate by the motor two 403, the horizontal rod 401 can be driven to move forward and backward on the solid column 407 by the rotation of the lead screw 402, and the sliding block 501 and the laser beam welding gun 502 can be driven to move forward and backward to change position.

[0062] As shown in Figures 11-13 ;

[0063] As the upper side of the slider 501 is inserted with the protruding pin 507, the front part of the crossbar 401 is connected with the motor bracket 505 through bolts, the motor three 506 is connected on the motor bracket 505 through bolts, the output shaft of the motor three 506 is connected with the yoke 503 through bolts, the yoke 503 is provided with a strip-shaped slot, the protruding pin 507 is inserted in the strip-shaped slot, the motor three 506 can drive the yoke 503 to swing left and right at different angles, and then drive the protruding pin 507 and the slider 501 to slide left and right relative to the cross column 504, and then drive the laser beam welding gun 502 to move left and right to emit laser beams;

[0064] The design of the motor three 506 driving the yoke 503 to swing and then driving the laser beam welding gun 502 to move left and right to emit laser beams brings more welding methods and higher flexibility to the welding process. When welding some welds with special shapes or requirements, this left and right movement function can play a huge role.

[0065] For example, for some wave-shaped or polyline-shaped welds, the laser beam welding gun 502 can accurately weld along the weld trajectory by moving left and right, ensuring the continuity and uniformity of the weld. The motor three 506 can drive the yoke 503 to swing at different angles according to the preset program, thereby realizing different amplitudes of left and right movement of the laser beam welding gun 502 to adapt to various complex weld shapes. Moreover, this swing angle and speed can be accurately adjusted according to the requirements of the welding process, making the welding process more accurate and controllable.

[0066] In terms of welding efficiency, this left and right movement welding method also has significant advantages. Compared with traditional fixed position welding, the left and right movement of the laser beam welding gun 502 can cover a larger welding area in one welding process, reducing the number of pauses and repositioning during the welding process, thereby greatly improving the welding efficiency. Especially for some large-area plate welding, by reasonably setting the left and right movement parameters of the laser beam welding gun 502, fast and efficient welding work can be realized.

[0067] From the perspective of welding quality, the left and right movement of the laser beam welding gun 502 can make the laser beam act more uniformly on the weld surface. In the welding process, the energy distribution of the laser beam may have certain unevenness, and by moving the laser beam welding gun 502 left and right, the action of the laser beam on the weld can be more uniform, avoiding local overheating or insufficient welding, thereby improving the quality and strength of the weld.

[0068] In order to ensure the stability and accuracy of the motor three 506 drive yoke 503 swing, motor three 506 can choose high precision, high torque servo motor. This motor has good control performance and response speed, can accurately according to the preset command drive yoke 503 swing, ensure the left and right movement precision of laser beam welding gun 502. At the same time, the cooperation of the strip groove on the yoke 503 and the protruding pin 507 is also carefully designed, the inner wall of the strip groove is smooth treated, to reduce the friction force of the protruding pin 507 in the groove when sliding, ensure the smoothness of movement. Moreover, the connection of the protruding pin 507 and the slider 501 is also very firm, can withstand the vibration and impact force generated in the welding process, ensure the stability of the whole transmission system.

Claims

1. A laser beam welding system comprising two trays (101), characterized in that: The two trays (101) are arranged on the left and right sides, and each tray (101) is fixed with an L-shaped plate (103). An inclined surface (102) is provided at the right angle of the inner side of the L-shaped plate (103). A connecting seat (111) is fixed to the lower side of the tray (101), and an ultrasonic generator (110) is fixed on the connecting seat (111). Each of the trays (101) has a cylinder (202) fixed at both the front and rear ends on the lower side. Each cylinder (202) has a disc (205) at both the upper and lower ends. Two slide blocks (302) are arranged on the left and right sides. The two cylinders (202) on the same tray (101) are vertically slidably connected to the slide blocks (302) on the corresponding side. Each cylinder (202) has a half rubber pad (204) fitted at both the upper and lower ends. The two half rubber pads (204) are located on the upper and lower sides of the corresponding slide (302) respectively. The two half rubber pads (204) are respectively attached to the two circular pieces (205). The half rubber pads (204) are semi-circular rings. Two protrusions (203) are fixed on the half rubber pads (204). The stop pin (201) is inserted between the two protrusions (203). It also includes a base plate (301), on which a track (304) is provided, and two slides (302) are slidably connected to the two ends of the track (304); The base plate (301) is fixed with telescopic rods (303) at both ends, and the movable ends of the two telescopic rods (303) are fixed on the two slides (302) respectively. Each L-shaped plate (103) has a bracket (104) fixed on its upper side. Two guide rods (106) are vertically slidably connected to the bracket (104). A wheel frame (107) is fixed to the lower end of the two guide rods (106). A wheel (108) is rotatably connected to both the front and rear ends of the wheel frame (107). A motor (109) is fixed to both the front and rear ends of the wheel frame (107). The output shaft of the motor (109) is fixed to the corresponding wheel (108). A telescopic rod (105) is fixed to the bracket (104). The movable end of the telescopic rod (105) is fixed to the wheel frame (107). A hollow column (406) is fixed to the rear of the base plate (301), and a solid column (407) is vertically slidably connected to the hollow column (406). A telescopic rod (405) is fixed to the rear of the base plate (301), and the movable end of the telescopic rod (405) is fixed to the solid column (407). A crossbar (401) is slidably connected to the upper part of the solid column (407) in the front-back direction. A crossbar (504) is fixed to the front part of the crossbar (401), and a slider (501) is slidably connected to the crossbar (504) in the transverse direction. A laser beam welding gun (502) is fixed to the lower end of the slider (501). A motor base (404) is fixed to the rear of the crossbar (401), a second motor (403) is fixed on the motor base (404), a lead screw (402) is fixed on the output shaft of the second motor (403), and the lead screw (402) is threadedly engaged with the solid column (407).

2. The laser beam welding system according to claim 1, characterized in that: A protruding pin (507) is fixed on the upper side of the slider (501), a motor frame (505) is fixed on the front of the crossbar (401), a motor three (506) is fixed on the motor frame (505), a shift fork (503) is fixed on the output shaft of the motor three (506), a strip groove is provided on the shift fork (503), and the protruding pin (507) is inserted into the strip groove.

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