Suspension type laser welding mechanism

Abstract

The invention relates to a suspension type laser welding mechanism, which is provided for an occasion for automatically welding two butted pipe fittings, and comprises a body, which is provided with an accommodating space and two fixing devices, and the two fixing devices are respectively connected to the end surfaces of the two sides of the body; the linkage assembly further comprises a bearing and a linkage pipe; the refractor group unit is provided with two mirror surfaces which are respectively connected to the linkage pipes of the transmission linkage assembly; the laser unit is pivoted to a swinging piece, and the swinging piece is provided with a joint part which is connected to the linkage pipe of the linkage assembly; the transmission unit comprises a motor, a driving gear and a driven gear; and the laser rotation unit is connected to the swinging piece of the laser unit.

Description

Technical Field

[0001] The invention relates to laser welding, in particular to a suspended laser welding mechanism capable of automatically welding pipelines. Background Art

[0002] When factories weld round pipes, because round pipes are difficult to process, workers usually weld them by holding a welding gun and rotating it around the joint. However, manual welding can cause uneven and uneven welds and cause porosity and embrittlement of welds. In addition, manual operation takes a lot of time and the welding speed is slow, which really needs to be improved. Summary of the invention

[0003] Therefore, in view of the above problems in conventional pipe welding, the main purpose of the present invention is to provide a suspended laser welding mechanism that improves production quality and welding speed;

[0004] A secondary purpose of the present invention is to provide a suspended laser welding mechanism for quickly positioning a workpiece.

[0005] To achieve the above purpose, the present invention uses the following technical means:

[0006] The present invention provides a suspended laser welding mechanism, comprising: a body, provided with a containing space and two fixing devices, wherein the two fixing devices are respectively connected to the two side end surfaces of the body; a linkage assembly, further comprising a bearing and a linkage tube, wherein the bearing is connected to two fixing seats provided on the body, and the linkage tube is connected to the bearing and placed in the containing space of the body, and a hollowed-out annular groove is provided on the surface of the linkage tube; a refraction lens unit, wherein the refraction lens unit is provided with two mirror surfaces respectively connected to the linkage tube of the transmission linkage assembly; an excitation lens unit; a laser beam ... A light unit, the laser unit is pivotally connected to a swinging member, and the swinging member is provided with a joint portion connected to the linkage tube of the linkage assembly, and the laser unit corresponds to the hollowed-out annular groove of the linkage tube; a transmission unit, the transmission unit further includes a motor, a driving gear and a driven gear, wherein the motor is connected to the driving gear, and the driven gear is connected to the swinging member, and the driven gear and the driving gear are connected to each other; and a laser rotating unit, the laser rotating unit is connected to the swinging member of the laser unit and drives the laser unit to rotate an angle.

[0007] The main body further comprises a rotating track, and the rotating track is connected to the two fixing seats.

[0008] The laser unit further comprises a pulley, which cooperates with the rotating track of the body; and the swinging member of the laser unit is provided with a center point.

[0009] The main body further comprises a baffle plate, and the baffle plate is connected to the side of the main body and corresponds to the hollowed-out annular groove of the linkage pipe.

[0010] The bearing of the linkage assembly is a double-layer roller bearing, wherein a limiting groove is provided on the surface of the bearing.

[0011] The linkage tube of the linkage assembly is provided with a protrusion, and the protrusion is embedded in the limiting groove of the bearing.

[0012] The transmission unit is adjacent to or connected to the main body.

[0013] The vertical center lines of the two mirror surfaces form an angle of 100 degrees with each other.

[0014] The laser rotating unit is driven by a stepping motor, a servo motor or a human operator.

[0015] The laser rotation unit drives the laser unit to rotate positive 15 degrees or negative 15 degrees.

[0016] The present invention can achieve the following effects by means of the above technical means:

[0017] 1. The present invention uses a laser unit combined with a linkage component and a refractive lens unit to rotate relative to a first workpiece and a second workpiece. The laser unit stably rotates on the butt joint end faces of the first workpiece and the second workpiece during welding, and the laser unit irradiates the laser to the refractive lens unit and uses two mirrors to reflect the laser to the butt joint end faces of the first workpiece and the second workpiece to speed up the automated welding process while maintaining the welding quality.

[0018] 2. The present invention uses the baffle of the main body to rotate it to the accommodating space of the main body, and then pushes the first processing piece from the left side of the main body into the accommodating space and abuts against the baffle, and fixes the position of the first processing piece by a fixing device, and then pushes the second processing piece from the right side of the main body into the accommodating space, and its end face contacts with the first processing piece, thereby achieving the purpose of rapid positioning. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional schematic diagram of the suspended laser welding mechanism of the present invention.

[0020] Figure 2 It is a three-dimensional exploded view of the suspended laser welding mechanism of the present invention.

[0021] Figure 3 It is a front view of the suspended laser welding mechanism of the present invention.

[0022] Figure 4 yes Figure 3 XX cross-sectional view.

[0023] Figure 5 It is a schematic diagram of positioning the first processing part and the second processing part to the processing position according to the present invention.

[0024] Figure 6 yes Figure 3 YY section view.

[0025] Figure 7 It is a schematic diagram of the transmission unit of the present invention driving the linkage assembly and the laser unit to rotate.

[0026] Figure 8 It is a schematic diagram of the laser rotation unit of the present invention rotating the laser unit clockwise about the center point.

[0027] Fig. 9 It is a schematic diagram of the laser rotation unit of the present invention rotating the laser unit counterclockwise about the center point.

[0028] Explanation of reference numerals: A-welding mechanism; 1-main body; 11-accommodating space; 12-fixing device; 121-upper arc groove; 122-lower arc groove; 13-fixing seat; 14-rotating track; 15-baffle; 2-linking assembly; 21-bearing; 211-limiting groove; 22-linking tube; 221-bump; 222-frame; 223-hollowed annular groove; 3-refractive lens unit; 31, 31a-mirror; 4-laser unit; 41-swinging member; 42-center point; 43-joining part; 44-pulley; 5-transmission unit; 51-motor; 52-driving gear; 53-driven gear; 6-laser rotation unit 6; 81-first processing part; 82-second processing part; θ-angle. DETAILED DESCRIPTION

[0029] The present invention provides a suspended laser welding mechanism, please refer to Figure 1 , Figure 2 and Figure 7 , is to weld and fix the end surface of a first processed part 81 and the end surface of a second processed part 82 to each other, which includes: a main body 1, a linkage component 2, a refraction lens unit 3, a laser unit 4, a transmission unit 5 and a laser rotation unit 6; the above components are explained in conjunction with the drawings as follows.

[0030] For the above-mentioned main body 1, please refer to Figure 1 and Figure 2 , provided with a accommodating space 11 and two fixing devices 12, wherein the two fixing devices 12 are respectively connected to the two side end surfaces of the main body 1, and the two fixing devices 12 are respectively provided with an upper arc groove 121, and the main body 1 is provided with two lower arc grooves 122 corresponding to the upper arc groove 121; in particular, the main body 1 further includes a rotating track 14 and a baffle 15, wherein the rotating track 14 is connected to the two fixing seats 13, and wherein the baffle 15 is connected to the side of the main body 1.

[0031] Please refer to the above linkage assembly 2 Figure 1 and Figure 2 , further includes a bearing 21 and a linkage tube 22, wherein the bearing 21 is connected to the two fixing seats 13 of the main body 1 and placed in the accommodating space 11 of the main body 1, and the linkage tube 22 is connected to the bearing 21, and a hollowed-out annular groove 223 is provided on the surface of the linkage tube 22, and wherein the bearing 21 is a double-layer roller bearing 21, and a limiting groove 211 is provided on the surface of the bearing 21, and the linkage tube 22 is provided with a protrusion 221, and the protrusion 221 is embedded in the limiting groove 211 of the bearing 21.

[0032] The above-mentioned refraction lens unit 3, please refer to Figure 1 and Figure 2 The refraction lens unit 3 has two mirror surfaces 31 and 31 a respectively connected to two frames 222 of the linkage tube 22 , and the vertical center lines of the two mirror surfaces 31 and 31 a form an angle of 100 degrees with each other.

[0033] The laser unit 4 is described above. Figure 1 and Figure 2 The laser unit 4 is pivotally connected to a swinging member 41, and the swinging member 41 is provided with a joint portion 43 connected to the linkage tube 22 of the linkage assembly 2, and the laser unit 4 corresponds to the hollowed-out annular groove 223 of the linkage tube 22; in particular, the laser unit 4 further includes a pulley 44, which rolls in cooperation with the rotary track 14 of the main body 1.

[0034] Please refer to the transmission unit 5 mentioned above. Figure 1 and Figure 2 The transmission unit 5 further includes a motor 51, a driving gear 52 and a driven gear 53, wherein the motor 51 is connected to the driving gear 52, and the driven gear 53 is connected to the linkage tube 22 of the linkage assembly 2, and the driven gear 53 and the driving gear 52 are connected to each other, and the transmission unit 5 is adjacent to or connected to the main body 1.

[0035] The laser rotating unit 6 is shown in FIG. Figure 1 , Figure 2 and Figure 7 The laser rotating unit 6 is connected to the swinging member 41 of the laser unit 4, and the laser rotating unit 6 is configured as a stepping motor, a servo motor or an operator (ie, manually driven to rotate).

[0036] Therefore, the present invention provides a better solution for a suspended laser welding mechanism, please refer to Figures 3 to 5, the first processed piece 81 is placed in the lower arc groove 122 of the fixing device 12, and the first processed piece 81 extends through the bearing 21 and the linkage tube 22, and the baffle 15 is rotated to be stuck in the hollowed-out annular groove 223 of the linkage tube 22 (such as Figure 6 As shown), the first workpiece 81 is then pushed to the baffle 15 for positioning, and finally the baffle 15 is returned to its original position and the fixing device 12 is buckled to fix the first workpiece 81 in position, and then the second workpiece 82 is pushed in from the lower arc groove 122 of another fixing device 12, and is pushed until it is butted against the end surface of the first workpiece 81, so that the laser unit 4 first performs a 120-degree welding operation on the first workpiece 81 and the second workpiece 82 just above the butt end surfaces.

[0037] For further information, see Figure 6 and Figure 7 , then the transmission unit 5 drives the driving gear 52 to rotate, and the driving gear 52 meshes with the driven gear 53, and the driven gear 53 rotates together; in particular, the driving gear 52 and the driven gear 53 are bevel gears, and the rotation directions are perpendicular to each other, so when the driving gear 52 rotates horizontally, the driven gear 53 rotates vertically; the driven gear 53 rotates and rotates the linkage tube 22 in conjunction, and the linkage tube 22 is connected to the laser unit 4 and the linkage tube 22 through the swing member 41 and is connected to the refraction lens assembly unit 3, that is, the driven gear 53 drives the linkage tube 22, the laser unit 4 and the refraction lens assembly unit 3 to rotate together; in particular, the laser unit 4 rotates to avoid deformation caused by excessive weight and displacement of the trajectory, so that the pulley 44 of the laser unit 4 slides on the rotating track 14 of the body 1.

[0038] For further information, see Figure 7 and Figure 8 The laser rotating unit 6 controls the swinging member 41 of the laser unit 4, and the swinging member 41 rotates the laser unit 4 about a center point 42, that is, the swinging member 41 keeps an unchanged angle, and the laser unit 4 forms an angle θ (preferably 15 degrees) with the swinging member 41, so that the laser unit 4 irradiates the laser through the hollowed-out annular groove 223 of the linkage tube 22 to the mirror 31, and the mirror 31 generates a reflection to one side of the butt end faces of the first processing piece 81 and the second processing piece 82 to perform welding of about 120 degrees.

[0039] Similarly, if Fig. 9As shown, the laser rotating unit 6 controls the laser unit 4 and the swinging member 41 to form an angle -θ (preferably -15 degrees), so that the laser unit 4 irradiates the laser through the hollowed-out annular groove 223 of the linkage tube 22 to the mirror surface 31a, and the mirror surface 31a generates a reflection to the other side of the butt end faces of the first processing piece 81 and the second processing piece 82 to perform welding of about 120 degrees; in particular, when the laser unit 4 continues to weld, the transmission unit 5 is started, so that while the laser unit 4 rotates, the laser is continuously reflected by the two mirror surfaces 31, 31a and performs three-stage welding operations on the first processing piece 81 and the second processing piece 82. Due to the fully automated welding, the laser unit 4 and the refractive lens unit 3 are stably rotated to perform the welding operation on the butt end faces of the first processing piece 81 and the second processing piece 82, thereby maintaining the welding quality of the first processing piece 81 and the second processing piece 82.

[0040] The above description is only illustrative rather than restrictive of the present invention. Those skilled in the art will understand that many modifications, changes or equivalents may be made without departing from the spirit and scope defined by the claims, but all will fall within the scope of protection of the present invention.

Claims

1. A suspended laser welding mechanism, characterized in that: Contains: A main body, provided with a containing space and two fixing devices, wherein the two fixing devices are respectively connected to the two side end surfaces of the main body; A linkage assembly further includes a bearing and a linkage tube, wherein the bearing is connected to two fixing seats provided on the body, and the linkage tube is connected to the bearing and placed in the accommodation space of the body, and a hollowed-out annular groove is provided on the surface of the linkage tube; A refracting lens unit, wherein the refracting lens unit is provided with two mirror surfaces, and the two mirror surfaces are respectively connected to the linkage tubes of the transmission linkage assembly; A laser unit, the laser unit is pivotally connected to a swinging member, and the swinging member is provided with a joint portion, the joint portion is connected to the linkage tube of the linkage assembly, and the laser unit corresponds to the hollowed-out annular groove of the linkage tube; a transmission unit, the transmission unit further comprising a motor, a driving gear and a driven gear, wherein the motor is connected to the driving gear, and the driven gear is connected to the swinging member, and the driven gear and the driving gear are connected to each other; and A laser rotating unit is connected to the swinging part of the laser unit and can drive the laser unit to rotate an angle.

2. The suspended laser welding mechanism according to claim 1, characterized in that: The main body also includes a rotating track, and the rotating track is connected to the two fixing seats.

3. The suspended laser welding mechanism according to claim 2, characterized in that: The laser unit also includes a pulley, which matches the rotating track of the body; the swinging piece of the laser unit is provided with a center point.

4. The suspended laser welding mechanism according to claim 1, characterized in that: The main body also includes a baffle plate, which is connected to the side of the main body and corresponds to the hollowed-out annular groove of the linkage pipe.

5. The suspended laser welding mechanism according to claim 1 or 2, characterized in that: The bearing of the linkage assembly is a double-layer roller bearing, wherein a limiting groove is arranged on the surface of the bearing.

6. The suspended laser welding mechanism according to claim 5, characterized in that: The linkage tube of the linkage assembly is provided with a protrusion, and the protrusion is embedded in the limiting groove of the bearing.

7. The suspended laser welding mechanism according to claim 1, characterized in that: The transmission unit is adjacent to or connected to the body.

8. The suspended laser welding mechanism according to claim 1, characterized in that: The vertical center lines of the two mirror surfaces form an angle of 100 degrees with each other.

9. The suspended laser welding mechanism according to claim 1, characterized in that: The laser rotation unit is driven by a stepping motor, a servo motor or a human operator.

10. The suspended laser welding mechanism according to claim 9, characterized in that: The laser slewing unit drives the laser unit to rotate positive 15 degrees or negative 15 degrees.

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