Laser welding device suitable for large-size pipe diameter

Abstract

The utility model provides a laser welding device suitable for large-size pipe diameters, which is used for welding large-size pipe diameters and comprises a hanging piece unit, a laser welding unit and a laser welding unit. The rotary displacement unit further comprises a gear; the welding unit comprises a welding gun and a fixed seat, the welding gun is connected with the fixed seat, and the rotary displacement unit is connected with the fixed seat; the hanging piece unit is hung on a first machining piece, a second machining piece is in butt joint with the first machining piece, and the rotating displacement unit drives the welding unit, so that the rotating displacement unit and the welding unit conduct pipe fitting welding on an arc rack of the hanging piece unit in a circumferential rotation mode.

Description

Technical Field

[0001] The utility model relates to the field of laser welding, in particular to a laser welding device suitable for large-diameter pipes. Background Art

[0002] An existing laser welding machine 9 performs welding operations through the energy of a laser. Please refer to Figure 8 , referring to the Chinese Taiwan invention patent No. TW202346015A, "Automated Auxiliary Welding Equipment". This existing laser welding machine 9 uses a laser to generate a beam, which is expanded, reflected, and focused before irradiating on the surface of a workpiece 91. The surface heat melts the workpiece through heat conduction to form a specific molten pool, thereby realizing laser welding of the workpiece 91.

[0003] However, this existing laser welding machine 9 uses a connecting rod group 92 to connect the existing laser welding machine 9. Through the up and down lifting and front, back, left, and right movement of the connecting rod group 92, three-dimensional position and angle changes are formed. The end of the connecting rod group 92 is connected to a laser gun 93, and the displacement of the connecting rod group 92 easily affects the laser gun 93, causing the laser gun 93 to shake during welding operations, resulting in inaccurate or offset welding. Moreover, this existing laser welding machine 9 is not suitable for processing large-diameter pipes.

[0004] Furthermore, generally, the larger the workpiece 91 is, the larger the existing laser welding machine 9 is correspondingly, which requires certain costs for its manufacturing, transportation, and space. Therefore, there is a real need for improvement. Summary of the Utility Model

[0005] Therefore, in view of the problems existing in the above-mentioned existing laser welding machines, the main purpose of the present utility model is to provide a laser welding device suitable for large-diameter pipes for large-diameter pipe welding.

[0006] The secondary purpose of the present utility model is to provide a laser welding device suitable for large-diameter pipes that is convenient for processing.

[0007] Another purpose of the present utility model is to provide a laser welding device suitable for large-diameter pipes with low manufacturing costs.

[0008] The present utility model provides a laser welding device applicable to large-diameter pipe diameters, comprising: a hanging member unit, which includes two semi-circular members connected together, and the two semi-circular members are provided with two arc-shaped racks; a rotational displacement unit, which includes a motor connected to a gear, wherein the gear is arranged on the two arc-shaped racks of the hanging member unit; and a welding unit, which includes a welding gun and a fixing base, wherein the welding gun is arranged on the fixing base, and the rotational displacement unit is arranged on the fixing base; by hanging the hanging member unit on a first workpiece and butting a second workpiece against the first workpiece, and the rotational displacement unit drives the welding unit in a linkage manner, so that the rotational displacement unit and the welding unit move on the two arc-shaped racks of the hanging member unit to perform butt welding of the first workpiece and the second workpiece in a circular rotation.

[0009] Between the butting parts of the two semi-circular members of the hanging member unit, two loop fasteners are provided, so that the two semi-circular members form a closed circular shape, and the two semi-circular members are hung and positioned and fixed on the first workpiece.

[0010] On one side surface of the two semi-circular members of the hanging member unit, a first guide groove is provided, and on the other side surface of the two semi-circular members, a second guide groove is provided.

[0011] The fixing base of the welding unit is provided with a first guide post and a second guide post, and the first guide post corresponds to the first guide groove of the two semi-circular members, and the second guide post corresponds to the second guide groove of the two semi-circular members.

[0012] The motor is arranged on the fixing base of the welding unit.

[0013] The rotational displacement unit enables the welding unit to rotate one circle around a center point provided by the two semi-circular members of the hanging member unit to perform butt welding.

[0014] In addition, two bracket groups are included, and the two bracket groups are respectively arranged under the first workpiece and the second workpiece.

[0015] The bracket group includes four columns and a frame base, and wheels are provided at the tops of the four columns.

[0016] The welding gun of the welding unit is aligned with the connection part between the first workpiece and the second workpiece.

[0017] By means of the above technical means, the present utility model can achieve the following effects:

[0018] 1. The device of the present utility model installs the welding unit on the first workpiece through the hanging unit, then presses the second workpiece against the end face of the first workpiece, and starts the rotary displacement unit, so that the welding unit rotates around the center point and performs welding simultaneously, thereby achieving the purpose of welding large pipe fittings.

[0019] 2. The device of the present utility model divides the hanging unit into two semi-circular parts, and uses the two snap rings to fix them on the pipe surface of the first workpiece. Then, the welding unit together with the rotary displacement unit is connected to the hanging unit, and the installation is completed. Therefore, the device of the present utility model has excellent mobility and easy assembly.

[0020] 3. The device of the present utility model simplifies the welding unit, the hanging unit and the rotary displacement unit, and makes them externally connected to the surface of the first workpiece. After the welding operation is completed, it can be directly removed, thereby reducing the manufacturing cost. Brief Description of the Drawings

[0021] Figure 1 It is a three-dimensional schematic diagram of the laser welding device applicable to large-diameter pipes of the present utility model.

[0022] Figure 2 It is a three-dimensional exploded view of the laser welding device applicable to large-diameter pipes of the present utility model.

[0023] Figure 3 It is a schematic diagram of the external unit of the present utility model connected to the first workpiece.

[0024] Figure 4 It is a schematic diagram of the second workpiece of the present utility model being butted against the first workpiece.

[0025] Figure 5 It is a cross-sectional view of the laser welding device applicable to large-diameter pipes of the present utility model.

[0026] Figure 6 For the present utility model Figure 5 Schematic diagram in the X direction.

[0027] Figure 7 It is a schematic diagram of the displacement of the welding unit of the present utility model.

[0028] Figure 8 It is a schematic diagram of an existing laser welding machine.

[0029] Description of reference numerals: A - Laser welding device; 1 - Hanging member unit; 11 - Semi - circular member; 111 - Loop buckle; 112 - First guide groove; 113 - Second guide groove; 12 - Center point; 13 - Circular arc rack; 2 - Rotary displacement unit; 21 - Gear; 22 - Motor; 221 - Output end; 3 - Welding unit; 31 - Welding gun; 32 - Fixed seat; 321 - First guide post; 322 - Second guide post; 4 - Bracket group; 41 - Cylindrical body; 42 - Wheel body; 43 - Frame base; 51 - First workpiece; 52 - Second workpiece; 9 - Existing laser welding machine; 91 - Workpiece; 92 - Linkage group; 93 - Laser gun. Detailed implementation mode

[0030] The present utility model relates to a laser welding device applicable to large - diameter pipe diameters. A laser welding device A performs welding operations on the end faces of a first workpiece 51 and a second workpiece 52, and it includes: a hanging member unit 1, a rotary displacement unit 2, a welding unit 3, and two bracket groups 4; the above components will be described in conjunction with the accompanying drawings as follows.

[0031] Regarding the above - mentioned hanging member unit 1, please refer to Figure 1 and Figure 2 , which is composed of two semi - circular members 11, and there are two loop buckles 111 between the two semi - circular members 11, so that the two semi - circular members 11 form a closed circular shape. One side of the two semi - circular members 11 is provided with a first guide groove 112, and the other side of the two semi - circular members 11 is provided with a second guide groove 113, and the two semi - circular members 11 are hung on the first workpiece 51, and an arc rack 13 is connected inside the two semi - circular members 11.

[0032] Regarding the above - mentioned rotary displacement unit 2, please refer to Figure 1 and Figure 2 , the rotary displacement unit 2 further includes a gear 21 and a motor 22. The gear 21 is connected to the arc rack 13 of the hanging member unit 1, and an output end 221 provided on the motor 22 is connected to the gear 21.

[0033] Regarding the above - mentioned welding unit 3, please refer to Figure 1 and Figure 2 , the welding unit 3 further includes a welding gun 31 and a fixed seat 32. The motor 22 of the rotary displacement unit 2 is connected to the fixed seat 32, and the welding gun 31 is aligned with the connection between the first workpiece 51 and the second workpiece 52: In addition, the fixed seat 32 is provided with a first guide post 321 and a second guide post 322, and the first guide post 321 corresponds to the first guide groove 112 of the two semi - circular members 11, and the second guide post 322 corresponds to the second guide groove 113 of the two semi - circular members 11.

[0034] Regarding the above - mentioned two bracket groups 4, please refer toFigure 1 and Figure 2 , the two bracket groups 4 are respectively disposed under the first workpiece 51 and the second workpiece 52. The bracket group 4 is composed of four columns 41 and a frame base 43, and a wheel body 42 is provided at the top of each of the four columns 41.

[0035] Therefore, a preferred embodiment of the laser welding device applicable to large-diameter pipes of the present utility model is provided. Please refer to Figures 2 to 4 . Place the first workpiece 51 and the second workpiece 52 on the two bracket groups 4 respectively; it should be noted in particular that the sizes of the first workpiece 51 and the second workpiece 52, for example, a pipe diameter of 50 cm, and the wheel bodies 42 of the four columns 41 abut against the surfaces of the first workpiece 51 and the second workpiece 52 at four support points for fixation. Then, open the two semi-circular members 11 of the hanging member unit 1 and sleeved them on the circumference of the first workpiece 51. Then, slide the first guide post 321 and the second guide post 322 of the fixed seat 32 into the first guide groove 112 and the second guide groove 113 of the two semi-circular members 11. The arc rack 13 and the gear 21 are engaged with each other, and the two semi-circular members 11 are fixed by using the two snap buttons 111.

[0036] Furthermore, please refer to Figures 5 to 7 . Align the welding gun 31 of the welding unit 3 with the joint between the first workpiece 51 and the second workpiece 52. The operator starts the welding unit 3. The output end 221 of the motor 22 rotates clockwise to drive the gear 21 to rotate. The gear 21 meshes and moves on the arc rack 13, so that the welding unit 3 rotates one circle around a center point 12 provided on the two semi-circular members 11 to perform a welding operation on the first workpiece 51 and the second workpiece 52. When the welding unit 3 rotates one circle, the welding is completed. The output end 221 of the motor 22 rotates counterclockwise to return the welding unit 3 to the origin for standby to prevent the wire from winding around the first workpiece 51. Then, the operator removes the welding unit 3, the hanging member unit 1, and the rotary displacement unit 2 from the first workpiece 51; it should be noted in particular that when the welding unit 3 rotates, the first guide post 321 and the second guide post 322 are clamped into the first guide groove 112 and the second guide groove 113 to prevent the welding unit 3 from shaking during rotation and causing unstable welding.

[0037] It should be clarified that the above is the technical principle applied in the specific embodiments of the present utility model. If changes are made according to the concept of the present utility model and the functions and effects generated thereby do not exceed the spirit covered by the description and drawings of the present utility model, they should all be within the protection scope of the present utility model. It is hereby clarified.

Claims

1. A laser welding device applicable to large-diameter pipes, characterized in that, Comprising: A hanging member unit, which includes two semi-circular members connected together, and the two semi-circular members are provided with two arc racks; A rotary displacement unit, which includes a motor connected to a gear, and the gear is arranged on the two arc racks of the hanging member unit; and A welding unit, which includes a welding gun and a fixing base, wherein the welding gun is arranged on the fixing base, and the rotary displacement unit is arranged on the fixing base; The hanging member unit is hung on a first workpiece, a second workpiece is butted against the first workpiece, and the rotary displacement unit drives the welding unit in a linkage manner. The rotary displacement unit and the welding unit can rotate circumferentially on the two arc racks of the hanging member unit to perform butt welding of the first workpiece and the second workpiece.

2. The laser welding device applicable to large-diameter pipe diameters according to claim 1, characterized in that: There are two snap rings provided between the butting joints of the two semi-circular members of the hanging member unit, so that the two semi-circular members form a closed circular shape, and the two semi-circular members are hung and positioned and fixed on the first workpiece.

3. The laser welding device applicable to large-diameter pipe diameters according to claim 1, wherein: One side surface of the two semi-circular members of the hanging member unit is provided with a first guide groove, and the other side surface of the two semi-circular members is provided with a second guide groove.

4. The laser welding device applicable to large-diameter pipe diameters according to claim 3, characterized in that: The fixing base of the welding unit is provided with a first guide post and a second guide post, and the first guide post corresponds to the first guide groove of the two semi-circular members, and the second guide post corresponds to the second guide groove of the two semi-circular members.

5. The laser welding device applicable to large-diameter pipe diameters according to claim 1 or 4, characterized in that: The motor is arranged on the fixing base of the welding unit.

6. The laser welding device applicable to large-diameter pipe diameters as described in claim 5, characterized in that: The rotary displacement unit enables the welding unit to rotate one circle around a center point provided by the two semi-circular members of the hanging member unit for butt welding.

7. The laser welding device applicable to large-diameter pipe diameters as described in claims 1, 2, 3, 4 or 6, characterized in that: It also includes two bracket groups, and the two bracket groups are respectively arranged below the first workpiece and the second workpiece.

8. The laser welding device applicable to large-diameter pipe diameters as described in claim 7, wherein: The bracket group includes four columns and a frame base, and wheels are provided at the tops of the four columns.

9. The laser welding device applicable to large-diameter pipe diameters according to claim 1, wherein: The welding gun of the welding unit is aligned with the connection part between the first workpiece and the second workpiece.

Images