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CN-121670148-B - Laser welding equipment

CN121670148BCN 121670148 BCN121670148 BCN 121670148BCN-121670148-B

Abstract

The application relates to laser welding equipment, which belongs to the technical field of radiator laser processing and comprises a welding machine table, a cross beam and a welding head, wherein the cross beam is arranged on the welding machine table in a sliding manner, the welding head is arranged on the cross beam in a sliding manner along the length direction of the cross beam and along the direction perpendicular to the welding machine table, a first mounting ring is arranged on the welding head, a plurality of shielding plates are arranged on the first mounting ring in the circumferential direction of an outer ring of the first mounting ring and surround the welding head, the shielding plates are arranged on the first mounting ring in a sliding manner, when the welding head is used for welding a radiator, the bottoms of the shielding plates are connected to the radiator in a sliding manner, when the welding head is used for welding the radiator, the bottoms of the shielding plates are connected to the radiator, a preheating piece is arranged on the shielding plates, and is used for absorbing and storing heat generated in the welding process and then transmitting the heat to the radiator to be processed. The application has the effect of improving the welding safety of the radiating fin.

Inventors

  • LI XUQUN
  • LI RUIQI
  • CHEN BIN

Assignees

  • 四川科跃热传电子有限公司

Dates

Publication Date
20260508
Application Date
20260204

Claims (6)

  1. 1. The laser welding equipment is characterized by comprising a welding machine table (1), a cross beam (2) and a welding head (3), wherein the cross beam (2) is arranged on the welding machine table (1) in a sliding manner, the welding head (3) is arranged on the cross beam (2) in a sliding manner, the welding head (3) slides along the length direction of the cross beam (2) and along the direction perpendicular to the welding machine table (1), a first mounting ring (4) is arranged on the welding head (3), a plurality of shielding plates (5) are arranged on the first mounting ring (4), the shielding plates (5) are in strip shapes, the cross sections of the shielding plates (5) are arc-shaped, and the shielding plates (5) are circumferentially distributed along the outer ring of the first mounting ring (4) and surround the welding head (3); the shielding plate (5) is arranged on the first mounting ring (4) in a sliding manner, the sliding direction of the shielding plate (5) is parallel to the axial direction of the first mounting ring (4), and when the welding head (3) is used for welding the radiating fins, the bottom of the shielding plate (5) is connected to the radiating fins; the welding head (3) is provided with a fixing device (6), and the fixing device (6) is used for lifting all shielding plates (5) to be separated from the radiating fins after the radiating fins are welded; The shielding plate (5) is provided with a preheating piece (7), and the preheating piece (7) is used for absorbing and storing heat generated in a welding process and then transmitting the heat to a next radiating fin to be processed; The fixing device (6) comprises a second mounting ring (61) arranged on the welding head (3), the second mounting ring (61) is positioned above the first mounting ring (4) and has a diameter larger than that of the first mounting ring (4), a fixing groove (62) is formed in the bottom of the second mounting ring (61), the fixing groove (62) is in a ring shape, the second mounting ring (61) is arranged on the welding head (3) in a sliding manner, the second mounting ring (61) slides towards the shielding plate (5) to store the end part of the shielding plate (5) in the fixing groove (62), the fixing device (6) further comprises a first fixing piece and a first driving piece, the first fixing piece is used for fixing the shielding plate (5) in the second mounting ring (61) after the end part of the shielding plate (5) enters the fixing groove (62), and the first driving piece is used for driving the shielding plate (5) to slide and separate from the radiating fin after the shielding plate (5) is fixed in the second mounting ring (61); The heat absorbing device is characterized in that a cavity (10) is formed in the shielding plate (5), an installation notch (11) communicated with the cavity (10) is formed in the inner wall of the shielding plate (5), the preheating piece (7) comprises heat absorbing powder arranged in the cavity (10) and a transparent plate (71) arranged in the installation notch (11), heat reflected by a welding radiating fin of the welding piece (3) is transmitted to the heat absorbing powder through the transparent plate (71) to enable the temperature of the heat absorbing powder to rise, the heat absorbing powder rises, the heat absorbing device further comprises an stirring piece, the stirring piece is used for stirring the heat absorbing powder to enable the heat absorbing powder to conduct heat exchange with welding heat in a dynamic process, the first installation ring (4) is arranged on the welding piece (3) in a rotating mode, the rotation axis of the first installation ring (4) and the welding piece (3) are coaxially arranged, a plurality of driving wheels (12) are uniformly arranged on the outer wall of the welding piece (3), hanging grooves are formed in the inner periphery of the welding piece in a concave mode, the inner ring of the first installation ring (4) is hung in the hanging groove, the motor (3) is arranged on the first driving wheel (13), the first driving wheel (13) is arranged on the first welding piece (13), the stirring piece comprises an air inlet hole (72) formed in the shielding plate (5), the air inlet hole (72) faces the welding head (3), the air inlet hole (72) is close to the bottom of the shielding plate (5), an air outlet hole (15) is formed in the shielding plate (5), when the welding head (3) welds a radiating fin, the introduced protective gas enters the cavity (10) through the air inlet hole (72) and is discharged through the air outlet hole (15) to drive the heat absorbing powder to do irregular motion in the cavity (10).
  2. 2. The laser welding equipment according to claim 1, wherein the first fixing piece comprises a first air bag (63), mounting grooves (64) are formed in the side walls of two sides of the fixing groove (62), the first air bag (63) is arranged in the mounting grooves (64), the first air bag (63) has an expansion trend towards the direction of the fixing groove (62), the first fixing piece further comprises an air pump (65) arranged on the second mounting ring (61), and the air pump (65) is communicated with the first air bag (63).
  3. 3. A laser welding device according to claim 1, wherein the first driving member comprises a driving motor (66) and a driving screw (67), a sliding groove (8) is formed in the side wall of the welding head (3) in a concave manner, a sliding block (9) is arranged on the inner ring of the second mounting ring (61), the sliding block (9) is slidably arranged on the welding head (3) through the sliding groove (8), the driving motor (66) and the driving screw (67) are both positioned in the sliding groove (8), the sliding block (9) is in threaded connection with the driving screw (67), and the driving screw (67) is coaxially arranged on an output shaft of the driving motor (66).
  4. 4. The laser welding equipment according to claim 1, wherein a first channel (73) is arranged in the shielding plate (5), one end of the first channel (73) is communicated with the air inlet hole (72), the other end of the first channel is communicated with the bottom of the cavity (10), a plurality of layers of inclined plates (74) are arranged in the end part, close to the cavity (10), of the first channel (73), and a containing notch for containing heat absorbing powder is formed between the inclined plates (74) and the inner side of the first channel (73).
  5. 5. The laser welding device according to claim 1, wherein a second channel (14) is arranged in the shielding plate (5), one end of the second channel (14) is communicated with an air outlet hole (15), the other end of the second channel penetrates through the outer side wall of the shielding plate (5), and the air outlet hole (15) is formed in the inner wall, facing the welding head (3), of the cavity (10).
  6. 6. The laser welding equipment according to claim 1, wherein a windward cover (16) is arranged on the inner side of the shielding plate (5), the windward cover (16) is sleeved with an air inlet hole (72), and an air inlet gap (17) is formed in the windward surface of the windward cover (16).

Description

Laser welding equipment Technical Field The application relates to the technical field of radiator laser processing, in particular to laser welding equipment. Background The laser welding is a precise welding method which uses a laser beam with high energy density as a heat source to locally heat materials to a molten or vaporized state and form firm connection after cooling. When the laser power density is high enough, the surface of the material not only melts, but also rapidly vaporizes, and the vapor pressure creates a deep hole in the melt pool. The laser beam passes through the bottom of the key Kong Zhishe hole and the energy is absorbed by the material depth. Along with the movement of the laser head or the workpiece, the metal at the front edge of the key hole is continuously melted, and the metal at the rear edge is cooled and solidified to form a welding seam with large depth-to-width ratio and small deformation. However, the raw material of the radiating fin is generally red copper, and the red copper has high thermal conductivity, so the red copper is widely applied to the radiating industry, but at room temperature, the red copper has a reflectivity of more than 90% to commonly used near infrared lasers (such as a fiber laser and a 1064nm wavelength of a YAG laser), so that a large amount of visible light and invisible light of the laser are reflected in the welding process of the radiating fin, and the visible light and invisible light of the laser have a great influence on processing personnel. Disclosure of Invention In order to improve the safety of welding radiating fins, the application provides laser welding equipment. The application provides laser welding equipment which adopts the following technical scheme: the laser welding equipment comprises a welding machine table, a cross beam and a welding head, wherein the cross beam is arranged on the welding machine table in a sliding manner, the welding head is arranged on the cross beam in a sliding manner, and the welding head slides along the length direction of the cross beam and along the direction perpendicular to the welding machine table; The shielding plate is arranged on the first mounting ring in a sliding manner, the sliding direction of the shielding plate is parallel to the axis direction of the first mounting ring, and when the welding head is used for welding the radiating fins, the bottom of the shielding plate is connected to the radiating fins; the fixing device is arranged on the welding head and is used for lifting all shielding plates to be separated from the radiating fins after the radiating fins are welded; The shielding plate is provided with a preheating piece, and the preheating piece is used for absorbing and storing heat generated in the welding process and then transmitting the heat to a next radiating fin to be processed. Optionally, the fixing device includes the second collar that sets up on the welding head, the second collar is located the top of first collar and the diameter is greater than first collar, the fixed slot has been seted up to the bottom of second collar, the fixed slot is the annular, the second collar slides and sets up on the welding head, the second collar slides towards the shielding plate and accomodates the tip of shielding plate in the fixed slot, the fixing device still includes first mounting and first driving piece, after the tip that first mounting was used for the shielding plate got into the fixed slot, fix the shielding plate in the second collar, first driving piece is used for driving shielding plate slip and fin separation after the shielding plate is fixed in the second collar. Optionally, the first mounting includes first gasbag, the mounting groove has all been seted up to the lateral wall of fixed slot both sides, first gasbag sets up in the mounting groove, first gasbag has the expansion trend towards the fixed slot direction, first mounting still includes the air pump of setting on the second collar, air pump and first gasbag intercommunication. Optionally, the first driving piece includes driving motor and drive lead screw, the lateral wall indent shaping of soldered connection has the spout, the inner ring of second collar is provided with the slider, the slider passes through the spout and slides and set up on the soldered connection, driving motor and drive lead screw all are located the spout, slider threaded connection is on drive lead screw, drive lead screw coaxial setting is on the driving motor output shaft. Optionally, the installation breach with the cavity intercommunication has been seted up to the inner wall of cavity and shielding plate in the shielding plate, the preheating piece is including setting up the heat absorption powder in the cavity and setting up the transparent plate in the installation breach, the heat that the welding head welding fin reflected passes through the transparent plate and transmits the heat absorption powder and makes the