Automobile water channel laser welding process, welding products and laser equipment

Abstract

The present invention relates to the field of laser welding technology, and in particular to a laser welding process for automobile waterway grooves, welding products and laser equipment, wherein the laser welding process for automobile waterway grooves includes positioning a first workpiece and a second workpiece using a welding device, wherein the first workpiece and the second workpiece together form a weld; the laser head of the welding device faces the weld in an inclined posture, and the laser head performs laser welding on the weld to form a sealed weld, wherein a plane where the weld is located is defined as a welding surface, the welding surface is parallel to a horizontal plane, and the light output angle formed by the laser head and the welding surface is 35 degrees to 55 degrees. The main purpose of the present invention is to provide a laser welding process for automobile waterway grooves, aiming to reduce the probability of blowouts and cracks when welding aluminum alloy materials of different materials.

Description

Technical Field

[0001] The invention relates to the technical field of laser welding, and in particular to a laser welding process for automobile waterway grooves, a welding product and laser equipment. Background Art

[0002] Automobile gutter usually refers to the drainage system on the car. Its main function is to guide and drain rainwater on the car body to prevent moisture from invading the interior and body structure of the car, ensuring the comfort of passengers and the service life of the vehicle.

[0003] In order to ensure the structural strength of automobile water channel grooves, 3 series and 5 series aluminum alloy materials are usually required for welding. In the relevant brazing method, because different series of aluminum alloy materials are welded, bursting holes and cracks are prone to occur during the welding process. Summary of the invention

[0004] The main purpose of the present invention is to provide a laser welding process for automobile water channel grooves, aiming to reduce the probability of explosion holes and cracks when welding aluminum alloy materials of different materials.

[0005] To achieve the above-mentioned purpose, the automobile waterway groove laser welding process proposed by the present invention comprises:

[0006] Positioning a first workpiece and a second workpiece using a welding device, wherein the first workpiece and the second workpiece together form a weld;

[0007] The laser head of the welding equipment faces the weld in an inclined posture, and the laser head performs laser welding on the weld to form a sealed weld, wherein a plane where the weld is located is defined as a welding surface, the welding surface is parallel to a horizontal plane, and a light output angle formed by the laser head and the welding surface is 35 degrees to 55 degrees.

[0008] In an embodiment of the present invention, the light emission angle is 45 degrees.

[0009] In one embodiment of the present invention, the laser power of the welding equipment is 600W to 700W.

[0010] In one embodiment of the present invention, the laser head performs laser welding on the weld to form a sealing weld, including:

[0011] The laser head performs laser welding on the weld in a spiral welding manner to form a spiral wire sealing weld bead, wherein the diameter of the spiral wire sealing weld bead is 1.2 mm.

[0012] In one embodiment of the present invention, the frequency of the laser head is 100 Hz, and the moving speed of the laser head is 30 mm / s.

[0013] In one embodiment of the present invention, the automobile water channel laser welding process further includes:

[0014] After the first workpiece and the second workpiece are welded, a welded workpiece is formed. The welding equipment drives the welded workpiece to move to a picking station.

[0015] The present invention provides a welding workpiece obtained by the above-mentioned automobile waterway groove laser welding process.

[0016] The present invention proposes a laser device for realizing the automobile waterway laser welding process, wherein the laser device comprises a workpiece carrying frame and a manipulator, wherein the workpiece carrying frame comprises a base, a first workpiece carrying member and a second workpiece carrying member, wherein the first workpiece carrying member is slidably arranged on the base, and the second workpiece carrying member is rotatably connected to the first workpiece carrying member, wherein the first workpiece carrying member has a first limiting groove, and the second workpiece carrying member has a second limiting groove; the first limiting groove is used to accommodate the first workpiece for limiting the position, and the second limiting groove is used to accommodate the second workpiece for limiting the position; the manipulator comprises a manipulator arm and a laser head, wherein the laser head is rotatably connected to the manipulator arm, and the laser head is used to laser weld the first workpiece and the second workpiece.

[0017] In one embodiment of the present invention, the base is provided with a locking cylinder around the first workpiece carrier, the first workpiece carrier is provided with a locking groove corresponding to each locking cylinder, one side of the second workpiece carrier is provided with a locking block adapted to the limiting groove, each locking block is inserted in a locking groove, and the output shaft of the locking cylinder passes through the locking groove and is inserted into the locking block.

[0018] In one embodiment of the present invention, the base further comprises a lifting cylinder, and the lifting cylinder is arranged on the first workpiece carrier, and the output shaft of the lifting cylinder can abut against the first workpiece to make the first workpiece fit the second workpiece.

[0019] In this technical solution, laser welding is performed on the weld between the first workpiece and the second workpiece at a light output angle of 35 to 55 degrees by the laser head of the welding equipment, thereby reducing the probability of holes and cracks occurring in workpieces composed of two different materials during the welding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0021] Figure 1 A schematic diagram of a process flow of an embodiment of a laser welding process for a water channel groove of an automobile provided by the present invention;

[0022] Figure 2 A schematic structural diagram of an embodiment of the laser device provided by the present invention;

[0023] Figure 3 A schematic structural diagram of an embodiment of a first workpiece carrier provided by the present invention;

[0024] Figure 4 A schematic structural diagram of an embodiment of the second workpiece carrier provided by the present invention;

[0025] Figure 5 A schematic diagram of light emission angles of an embodiment of the automobile water channel laser welding process provided by the present invention.

[0026] Description of Figure Numbers:

[0027] 10. Workpiece carrier frame; 101. Base; 102. First workpiece carrier; 102a. Locking slot; 103. Second workpiece carrier; 1031. Locking block; 104. Locking cylinder; 105. Lifting cylinder; 106. Moving module; 20. Robot; 21. Robot arm; 22. Laser head.

[0028] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0031] In addition, the descriptions of "first", "second", etc. in the present invention are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0032] See also Figure 1 The automobile waterway groove laser welding process proposed by the present invention includes:

[0033] Step S100: positioning a first workpiece and a second workpiece by using a welding device, wherein the first workpiece and the second workpiece together form a weld;

[0034] Step S200: The laser head 22 of the welding equipment faces the weld in an inclined posture, and the laser head 22 performs laser welding on the weld to form a sealed weld, wherein a plane where the weld is located is defined as a welding surface, the welding surface is parallel to the horizontal plane, and the light output angle formed by the laser head 22 and the welding surface is 35 degrees to 55 degrees.

[0035] In the present technical solution, the laser head 22 of the welding equipment performs laser welding on the weld between the first workpiece and the second workpiece at a light output angle of 35 to 55 degrees, thereby reducing the probability of holes and cracks occurring in workpieces composed of two different materials during the welding process.

[0036] It should be explained that the first workpiece and the second workpiece are two workpieces to be welded. During the welding process, the first workpiece is fixed on the welding equipment, and the second workpiece is fixedly placed on the first workpiece. At this time, there is a certain gap between the first workpiece and the second workpiece, and the gap is the weld that needs to be closed by laser welding. It can be understood that according to actual needs, laser welding can be performed on welds at any location. In one embodiment, please refer to 2, the middle position of the first workpiece has a receiving groove, and the second workpiece is fixed at the notch of the receiving groove by the locking structure of the welding equipment. At this time, the weld between the first workpiece and the second workpiece is the gap between the first workpiece and the second workpiece at the notch of the receiving groove. During the welding process, in order to ensure a low probability of blowouts and cracks, the laser head 22 of the welding equipment faces the weld in an inclined posture, please refer to Figure 5The light output angle between the laser head 22 and the weld is 35 to 55 degrees. At this time, the light output angle is the angle formed by the laser beam and the plane parallel to the horizontal plane where the weld is located. Welding is performed at a specific angle, thereby reducing the probability of holes and cracks occurring during the welding process.

[0037] It is further necessary to explain that, before welding, the first workpiece and the second workpiece undergo surface treatment processes, such as surface cleaning, deburring, pickling, etc., and the specific processes are not limited here.

[0038] Furthermore, the light output angle is preferably 45 degrees, at which sufficient heat input can be ensured to achieve effective welding while reducing excess heat, which helps to avoid thermal damage to the material; at the same time, at this angle, the laser beam can form a suitable melt depth and width on the workpiece, thereby obtaining a good weld shape and size.

[0039] In one embodiment of the present invention, the laser power of the welding equipment is 600W to 700W. Within this power range, it helps to form a uniform weld, reduce welding defects such as pores and cracks, and improve the mechanical properties of the weld.

[0040] In one embodiment of the present invention, the laser head 22 performs laser welding on the weld to form a sealing weld, including:

[0041] The laser head 22 performs laser welding on the weld in a spiral welding manner to form a spiral wire sealing weld bead, wherein the diameter of the spiral wire sealing weld bead is 1.2 mm.

[0042] Specifically, after the laser head 22 fixes the light output angle, welding starts at the initial point. During the welding process, the robot arm 21 of the welding equipment moves along a preset trajectory, moving the laser head 22 to form a weld in the shape of a cylindrical spiral. In order to ensure that the welding width is increased, the diameter of the completed spiral sealing weld is set to 1.2 mm.

[0043] Furthermore, in order to ensure that sufficient laser energy acts on the weld during the welding process, the frequency of the laser head 22 is 100 Hz, and the moving speed of the laser head 22 is 30 mm / s.

[0044] In one embodiment of the present invention, the automobile water channel groove laser welding process further includes:

[0045] Step 300: After the first workpiece and the second workpiece are welded, a welded workpiece is formed, and the welding equipment drives the welded workpiece to move to a picking station.

[0046] It is understandable that the laser device is equipped with a movable limiting module that can carry the welding workpiece. In order to avoid approaching the laser head 22, the movable limiting module is controlled to drive the welding workpiece away from the welding station, thereby reducing the danger.

[0047] The present invention provides a welding workpiece obtained by the automobile water channel groove laser welding process, so that the weld quality of the welding workpiece can be guaranteed and the sealing and safety can be improved.

[0048] The present invention proposes a laser device for realizing a laser welding process for automobile waterway grooves. The laser device includes a workpiece carrying frame 10 and a manipulator 20. The workpiece carrying frame 10 includes a base 101, a first workpiece carrying member 102 and a second workpiece carrying member 103. The first workpiece carrying member 102 is slidably arranged on the base 101, and the second workpiece carrying member 103 is rotatably connected to the first workpiece carrying member 102. The first workpiece carrying member 102 has a first limiting groove, and the second workpiece carrying member 103 has a second limiting groove; the first limiting groove is used to accommodate the first workpiece for limiting positioning, and the second limiting groove is used to accommodate the second workpiece for limiting positioning; the manipulator 20 includes a mechanical arm 21 and a laser head 22. The laser head 22 is rotatably connected to the mechanical arm 21, and the laser head 22 is used for laser welding the first workpiece and the second workpiece.

[0049] The workpiece carrier frame 10 is a load-bearing component for placing the first workpiece and the second workpiece. The workpiece carrier frame 10 is assembled from a plurality of sheet metal parts, and specifically includes a base 101, a first workpiece carrier 102 and a second workpiece carrier 103. The upper surface of the base 101 is provided with two guide rails arranged parallel to each other. The first workpiece carrier 102 is provided with a linear moving module 106 adapted to the guide rails. The linear moving module 106 includes a motor, a slider and other structures. The slider is connected to the guide rail. Driven by the motor, the first workpiece carrier 102 can move back and forth between the welding station and the workpiece picking up along the extension direction of the guide rail, thereby completing the welding and picking up actions. A rotating shaft is provided on one side of the first workpiece carrier 102, and the second workpiece carrier 103 is connected to the rotating shaft, thereby realizing the second The workpiece carrier 103 can be rotated and flipped onto the first workpiece carrier 102. Specifically, before welding, the first workpiece carrier 102 moves to pick up the workpiece. At this time, the first workpiece can be placed in the first limiting groove of the first workpiece carrier 102, and the second workpiece can be placed in the second limiting groove of the second workpiece carrier 103. Then, the second workpiece carrier 103 can be flipped manually or by a motor. At this time, the second workpiece carrier 103 rotates to the upper surface of the first workpiece carrier 102, and the second workpiece is located on the first workpiece to enclose and form a weld to be welded. Then, the linear moving module 106 works to move the first workpiece and the second workpiece to the welding station together, and then laser welding is performed through the automobile waterway tank laser welding process explained above, thereby ensuring the quality of the weld. It can be understood that the manipulator 20 is a multi-axis manipulator 20 with multiple rotating joints, so as to ensure that the laser head 22 always performs laser welding on the weld at a specific light output angle.

[0050] In one embodiment of the present invention, see Figures 2 to 4 The base 101 is provided with a locking cylinder 104 around the first workpiece carrier 102. The first workpiece carrier 102 is provided with a limiting groove corresponding to each locking cylinder 104. A locking block 1031 adapted to the limiting groove is provided on one side of the second workpiece carrier 103. Each locking block 1031 is inserted into a locking groove 102a. The output shaft of the locking cylinder 104 passes through the locking groove 102a and is plugged into the locking block 1031. In this way, after the second workpiece carrier 103 is flipped onto the first workpiece carrier 102, the locking block 1031 can be inserted into the limiting groove. Then the locking cylinder 104 works, and its output shaft is inserted into the locking block 1031 through the limiting groove, thereby ensuring that the first workpiece and the second workpiece are in a positioning state to prevent position deviation.

[0051] In one embodiment of the present invention, see Figure 2 The base 101 also includes a lifting cylinder 105, which is arranged on the first workpiece carrier 102. The output shaft of the lifting cylinder 105 can abut the first workpiece. In this way, after the second workpiece carrier 103 is flipped onto the first workpiece carrier 102, the output shaft of the lifting cylinder 105 lifts the first workpiece upward to make the first workpiece fit the second workpiece, thereby ensuring that the gap between the first workpiece and the second workpiece is in a small amount, thereby ensuring the welding quality.

[0052] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention's specification and drawings, or directly / indirectly applied in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. A laser welding process for automobile water channel, used for welding a first workpiece and a second workpiece, wherein the first workpiece is fixed on a welding station of a laser welding device, and the second workpiece is located on the upper surface of the first workpiece, characterized in that: The process comprises: Positioning a first workpiece and a second workpiece using a laser welding device, wherein the first workpiece and the second workpiece together form a weld; The laser head (22) of the laser welding equipment faces the weld in an inclined posture, and the laser head (22) performs laser welding on the weld in a spiral welding manner to form a spiral line sealing weld, wherein a plane where the weld is located is defined as a welding surface, the welding surface is parallel to a horizontal plane, and a light output angle formed by the laser head (22) and the welding surface is 45 degrees; Laser power is 600W to 700W; Wherein, the diameter of the spiral wire sealing weld is 1.2 mm; The frequency of the laser head (22) is 100 Hz, and the moving speed of the laser head (22) is 30 mm / s; The laser welding equipment comprises a workpiece bearing frame (10) and a manipulator (20), wherein the workpiece bearing frame (10) comprises a base (101), a first workpiece bearing member (102) and a second workpiece bearing member (103), wherein the first workpiece bearing member (102) is slidably arranged on the base (101), and the second workpiece bearing member (103) is rotatably connected to the first workpiece bearing member (102), wherein the first workpiece bearing member (102) has a first limiting groove, and the second workpiece bearing member (103) has a second limiting groove; the first limiting groove is used to accommodate a first workpiece for limiting position, and the second limiting groove is used to accommodate a second workpiece for limiting position; the manipulator (20) comprises a manipulator arm (21) and a laser head (22), wherein the laser head (22) is rotatably connected to the manipulator arm (21), and wherein the laser head (22) is used to laser weld the first workpiece and the second workpiece; The base (101) is provided with a locking cylinder (104) at positions around the first workpiece carrier (102); each position of the first workpiece carrier (102) corresponding to each locking cylinder (104) is provided with a locking groove (102a); one side of the second workpiece carrier (103) is provided with a locking block (1031) adapted to the corresponding locking groove (102a); each locking block (1031) is inserted into each corresponding locking groove (102a); and the output shaft of the locking cylinder (104) passes through the locking groove (102a) and is inserted into the locking block (1031); The base (101) further comprises a lifting cylinder (105), the output shaft of which is capable of abutting against the first workpiece so that the first workpiece fits the second workpiece.

2. The automobile water channel laser welding process according to claim 1, characterized in that: The automobile waterway groove laser welding process also includes: After the first workpiece and the second workpiece are welded, a welded product is formed, and the laser welding equipment drives the welded product to move to a picking station.

3. A welding product, characterized in that: The invention is obtained by the automobile water channel laser welding process as described in any one of claims 1-2.

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