New energy pipe fitting laser welding device

Abstract

The utility model relates to the technical field of laser welding, in particular to a new energy pipe fitting laser welding device which comprises a machine frame, a laser welding assembly and a driving assembly, the laser welding assembly comprises a laser generator, a welding head, a light path pipe and a reflecting mirror, and a laser beam emitted by the laser generator penetrates through an output shaft of a driving motor. And the light is sequentially reflected by a plurality of reflectors in the light path tube and then is emitted through the welding head. When the pipe fitting is a round pipe, the welding head is controlled by the driving assembly to rotate a circle around the periphery of a pipe opening of the pipe fitting so that welding of the pipe fitting can be completed, and when the pipe fitting is a flat pipe with the oval section, the welding head is controlled by the driving assembly to slide along the linear part of the periphery of the pipe fitting firstly; and then the welding head is controlled by the driving assembly to rotate around the semicircular part on the periphery of the pipe fitting by a half circle, and then one-time translation and rotation operation is repeated, so that welding of the pipe fitting can be completed. Therefore, the laser welding device can adapt to laser welding of flat pipes and round pipes at the same time, and the practicability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of laser welding, in particular to a new energy pipe laser welding device. Background Art

[0002] In the production of new energy vehicle parts, pipes and joints require welding using new energy pipe laser welding devices. Existing new energy pipe laser welding devices include a laser generator, a welding head, and a driver that drives the welding head in rotation. The laser generator generates a laser beam and transmits the laser beam to the welding head, which is then emitted through the welding head. The welding head is positioned toward the weld point between the pipe and the joint. When welding round pipes, welding can be achieved simply by controlling the welding head's rotation relative to the pipe and joint weld point using the driver. However, in the production of new energy vehicle parts, many flat pipes with elliptical cross-sections are also present. Existing new energy pipe laser welding devices are not suitable for welding flat pipes, making them less practical. Utility Model Content

[0003] Based on the technical problems existing in the above-mentioned prior art, the utility model provides a new energy pipe laser welding device, which can be applied to laser welding of flat tubes and round tubes at the same time, and its practicality is improved.

[0004] The technical solution adopted by the utility model to solve its technical problems is: to provide a new energy pipe laser welding device, including a frame on which pipes and joints are placed, a laser welding assembly and a driving assembly arranged on the frame, the laser welding assembly including a mounting plate, a laser generator, a welding head, an optical path tube and a reflector arranged on the frame, the welding head is set toward the welding point of the pipe and the joint, the optical path tube is connected to the welding head, the reflector is located in the optical path tube, the laser beam emitted by the laser generator passes through the output shaft of the drive motor, and is reflected by several reflectors in the optical path tube in turn and then emitted through the welding head, the driving assembly is used to control the movement of the welding head along the outer periphery of the pipe mouth of the pipe.

[0005] Furthermore, the driving assembly includes a driving motor arranged on the mounting plate, and the output shaft of the driving motor and the welding head are coaxially arranged.

[0006] Furthermore, a slide rail 1 is provided on the frame, and the drive assembly also includes a sliding block and a screw drive module arranged on the mounting plate. The sliding block is slidably arranged on the slide rail 1 and is adapted to the slide rail 1. The screw drive module is used to drive the mounting plate to slide along the slide rail 1.

[0007] Furthermore, one end of the optical tube is connected to the output shaft of the driving motor.

[0008] Furthermore, the new energy pipe laser welding device also includes a conveying assembly arranged on the frame, the conveying assembly includes a conveyor belt, a second slide rail and a conveying cylinder arranged on the frame, and a placement plate slidably arranged on the second slide rail. The piston rod of the conveying cylinder is connected to the placement plate, and the pipes and joints are conveyed to the placement plate through the conveyor belt, and then conveyed to the welding head through the conveying cylinder.

[0009] Furthermore, the new energy pipe laser welding device also includes a pressing assembly arranged on the placement plate, the pressing assembly includes a pressure plate 1 and a fixed plate arranged on the placement plate, a pressure plate 2 lifted and arranged on the fixed plate, and a pressing cylinder arranged on the fixed plate, the pressure plate 1 and the pressure plate 2 are correspondingly arranged, the piston rod of the pressing cylinder is connected to the pressure plate 2, after the pipe fittings and joints are conveyed to the pressure plate 1 by the conveyor belt, the pressure plate 2 is controlled to be lifted and lowered by the pressing cylinder to press the pipe fittings and joints.

[0010] Furthermore, the frame is provided with a mounting baffle, the mounting baffle is located between the welding head and the second slide rail, and the mounting baffle is provided with a mounting groove for pipes and joints to pass through.

[0011] The beneficial effects of the present invention are: providing a new energy pipe laser welding device, including a frame on which pipes and joints are placed, a laser welding assembly, and a drive assembly for controlling the movement of a welding head around the outer circumference of the pipe. The laser welding assembly includes a mounting plate, a laser generator, a welding head, an optical path tube, and a reflector. The laser beam emitted by the laser generator passes through the output shaft of the drive motor and is sequentially reflected by a number of reflectors in the optical path tube before being emitted through the welding head. When the pipe is a round pipe, the driving assembly controls the welding head to rotate one circle around the outer circumference of the pipe mouth to complete the welding of the round pipe. When the pipe is a flat pipe with an elliptical cross-section, the driving assembly controls the welding head to first slide along the straight portion of the pipe circumference, then controls the welding head to rotate half a circle around the semicircular portion of the pipe circumference, and then repeats the translation and rotation operation to complete the welding of the pipe. In this way, the laser welding device can be adapted to the laser welding of both flat and round pipes, thereby improving its practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0013] In the picture: Figure 1 This is an overall structural diagram of a new energy pipe laser welding device provided in Example 1 of the utility model;

[0014] Figure 2 for Figure 1The front view of the new energy pipe laser welding device shown;

[0015] Figure 3 For laser beam Figure 2 The light path diagram inside the light pipe shown (the internal structure of the light pipe is not fully shown);

[0016] Figure 4 This is an overall structural diagram of a new energy pipe laser welding device provided in Example 2 of the present utility model;

[0017] Figure 5 for Figure 4 Enlarged view of point A in the middle;

[0018] Figure 6 for Figure 1 The main view of the new energy pipe laser welding device shown.

[0019] Explanation of the accompanying reference numerals: 100, new energy pipe laser welding device; 10, frame; 11, slide rail 1; 12, mounting baffle; 121, mounting slot; 20, laser welding assembly; 21, mounting plate; 22, laser generator; 23, welding head; 231, optical path tube; 2311, vertical section 1; 2312, horizontal section; 2313, vertical section 2; 232, reflector; 30, conveying assembly; 31, conveyor belt; 32, slide rail 2; 33, conveying cylinder; 34, placement plate; 40, pressing assembly; 41, pressing plate 1; 42, fixing plate; 43, pressing plate 2; 44, pressing cylinder; 50, driving assembly; 51, driving motor; 52, sliding block; 53, screw drive module; 200, pipe fitting; 300, joint. DETAILED DESCRIPTION

[0020] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention is now described in detail with reference to the accompanying drawings. This figure is a simplified schematic diagram, which only illustrates the basics of the present invention in an illustrative manner, and therefore only shows the structures related to the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0021] Example 1

[0022] Please refer to Figure 1-3A new energy pipe laser welding device 100 includes a frame 10, a laser welding assembly 20 arranged on the frame 10, a transmission assembly 30, a pressing assembly 40 and a driving assembly 50. The pipe 200 and the joint 300 are conveyed to the laser welding assembly 20 by the transmission assembly 30 for laser welding. The pressing assembly 40 and the transmission assembly 30 cooperate to press the pipe 200 and the joint 300 during laser welding. The driving assembly 50 is used to drive the laser welding assembly 20 to move around the outer circumference of the pipe 200.

[0023] Specifically, the pipe fitting 200 used in this embodiment is a round tube with a circular cross section, and the pipe fitting 200 is not shown in the figure.

[0024] An installation baffle 12 is provided on the frame 10, and the installation baffle 12 is located between the laser welding assembly 20 and the transmission assembly 30. The installation baffle 12 is provided with an installation groove 121 for the pipe 200 and the joint 300 to pass through. During laser welding, only the pipe 200 and the joint 300 pass through the installation groove 121 for laser welding to prevent the laser welding from damaging the transmission assembly 30 located on one side of the installation baffle 12.

[0025] The laser welding assembly 20 includes a mounting plate 21 arranged on the frame 10, a laser generator 22 and a welding head 23 rotatably connected relative to the mounting plate 21, wherein the mounting plate 21 and the frame 10 are fixedly connected, and the welding head 23 is arranged toward the welding point of the pipe 200 and the joint 300. The welding head 23 receives the laser beam generated by the laser generator 22 and then emits the laser beam outward.

[0026] The drive assembly 50 includes a drive motor 51 provided on the mounting plate 21, and an electronic control module (not shown in the figure) for controlling the drive motor 51. The output shaft of the drive motor 51 and the welding head 23 are coaxially arranged. Furthermore, in this embodiment, the laser generator 22 passes through the output shaft of the drive motor 51. Specifically, in this embodiment, the model of the drive motor 51 is FI-6080, purchased from Shenzhen Qianghe Motor Co., Ltd. The model of the motor is not limited to this, and any shaftless motor that can realize the rotation function can be used for the technical solution of this application. The specific structure of the electronic control module and the specific connection structure of the laser generator 22 and the welding head 23 are all existing technologies and are not described in detail in this embodiment.

[0027] The laser welding assembly 20 also includes a hollow optical tube 231 and several reflectors 232 arranged in the optical tube 231. One end of the optical tube 231 is fixedly connected to the output shaft of the drive motor 51, and the other end of the optical tube 231 is fixedly connected to the welding head 23. After the laser beam is emitted from the laser generator 22, it is reflected in sequence by the several reflectors 232 in the optical tube 231 and then emitted from the welding head 23.

[0028] For further information, please refer to Figure 3 In this embodiment, the optical tube 231 includes a first vertical section 2311 arranged along the thickness of the frame 10, a horizontal section 2312 arranged along the length of the frame 10, and a second vertical section 2313 arranged along the thickness of the frame 10. The first vertical section 2311, the horizontal section 2312, and the second vertical section 2313 are arranged in sequence along the length of the frame 10. The first vertical section 2311 is connected to the laser generator 22, and the second vertical section 2313 is positioned toward the weld between the pipe 200 and the joint 300. Three reflectors 232 are provided, one at the top of the first vertical section 2311, the junction between the first vertical section 2311 and the horizontal section 2312, and the junction between the horizontal section 2312 and the second vertical section 2313. After being emitted from the laser generator 22, the laser beam is reflected by the reflector 232 at the top of the vertical segment 1 2311, the reflector 232 at the junction of the vertical segment 1 2311 and the horizontal segment 2312, and the reflector 232 at the junction of the horizontal segment 2312 and the vertical segment 2 2313, and then emitted from the vertical segment 2 2313. Figure 3 The thick solid line represents the laser beam, and the arrow represents the direction of travel of the laser beam.

[0029] The conveying assembly 30 includes a conveyor belt 31, a slide rail 32 and a conveying cylinder 33 arranged on the frame 10, and a placement plate 34 slidably arranged on the slide rail 32. The conveyor belt 31, the conveying cylinder 33 and the slide rail 32 are arranged on one side of the welding head 23 in sequence, and the slide rail 32 is closer to the welding head 23 than the conveyor belt 31. The piston rod of the conveying cylinder 33 is fixedly connected to the placement plate. The pipe fitting 200 and the joint 300 are both conveyed to the placement plate through the conveyor belt 31, and then conveyed to the welding head 23 through the conveying cylinder 33.

[0030] The pressing assembly 40 includes a pressing plate 1 41 and a fixed plate 42 arranged on the placement plate 34, a pressing plate 2 43 arranged on the fixed plate 42 for lifting, and a pressing cylinder 44 arranged on the fixed plate 42. The pressing plate 1 41 and the pressing plate 2 43 are arranged correspondingly, and the piston rod of the pressing cylinder 44 is fixedly connected to the pressing plate 2 43. After the pipe 200 and the joint 300 are conveyed to the pressing plate 1 41 by the conveyor belt 31, the pressing cylinder 44 controls the pressing plate 2 43 to lift and lower the pipe 200 and the joint 300, thereby preventing the pipe 200 and the joint 300 from positionally shifting during laser welding and affecting the welding.

[0031] The working process of the new energy pipe laser welding device 100 provided in the first embodiment of the present invention is as follows: first, the end of the pipe 200 and the joint 300 are inserted and connected, then the pipe 200 and the joint 300 are transferred to the first pressing plate 41 on the placement plate 34 via the conveyor belt 31, and then the pressing cylinder 44 is activated to lower the second pressing plate 43 until the second pressing plate 43 can cooperate with the first pressing plate 41 to press the pipe 200 and the joint 300. Then, the placement plate 34 is controlled by the conveying cylinder 33 to move toward the installation baffle 12 until the weld of the pipe 200 and the joint 300 passes through the installation slot 121 and is located above the welding head 23, and then the laser generator 22 is activated to generate a laser beam for welding.

[0032] Then, the driving motor 51 is started to control the welding head 23 to rotate once around the outer circumference of the pipe 200 , thereby completing the welding of the pipe 200 and the joint 300 .

[0033] Example 2

[0034] Please refer to Figure 4-6 The difference between the second embodiment and the first embodiment is that the frame 10 is further provided with a slide rail 11, and the mounting plate 21 is slidably mounted on the slide rail 11. Specifically, in this embodiment, the placement direction of the slide rail 11 is perpendicular to the conveying direction of the conveying assembly 30, and the placement direction of the slide rail 11 is adapted to the linear boundary of the pipe 200.

[0035] The drive assembly 50 also includes a sliding block 52 and a screw drive module 53 disposed on the mounting plate 21. The electronic control module is also used to control the screw drive module 53. The sliding block 52 is slidably disposed on and adapted to the slide rail 11. The screw drive module 53 is used to drive the mounting plate 21 to slide. The specific structures of the electronic control module and the screw drive module 53 are conventional and are not described in detail in this embodiment.

[0036] Specifically, the pipe 200 shown in the accompanying drawings corresponding to this embodiment is a flat pipe with an elliptical cross-section.

[0037] The working process of the new energy pipe laser welding device 100 provided in the second embodiment of the present invention is as follows: first, the end of the pipe 200 and the joint 300 are inserted and connected, and then the pipe 200 and the joint 300 are transferred to the pressure plate 1 41 on the placement plate 34 via the conveyor belt 31. Then, the pressing cylinder 44 is activated to lower the pressure plate 2 43 until the pressure plate 2 43 can cooperate with the pressure plate 1 41 to press the pipe 200 and the joint 300. Then, the placement plate 34 is controlled by the conveying cylinder 33 to move toward the installation baffle 12 until the weld of the pipe 200 and the joint 300 passes through the installation slot 121 and is located above the welding head 23. Then, the laser generator 22 is activated to generate a laser beam for welding.

[0038] When welding the pipe 200 and the joint 300, if the pipe 200 is a round pipe, the driving motor 51 is started to control the welding head 23 to rotate around the outer circumference of the pipe 200 once, and the welding of the pipe 200 and the joint 300 can be completed.

[0039] When welding the pipe fitting 200 and the joint 300, if the pipe fitting 200 is a flat tube with an elliptical cross-section, the welding head 23 is controlled by the screw drive module to first move horizontally along the straight portion of the outer circumference of the pipe fitting 200 to the semicircular portion of the outer circumference of the pipe fitting 200. At this time, the drive motor 51 is started to control the welding head 23 to rotate half a circle around the semicircular portion of the outer circumference of the pipe fitting 200, and then the above operation is repeated until the welding of the entire outer circumference of the pipe fitting 200 is completed.

[0040] Beneficial Effects: When the pipe 200 is a round pipe, the driving assembly 50 controls the welding head 23 to rotate once around the outer circumference of the pipe opening of the pipe 200 to complete the welding of the round pipe. When the pipe 200 is a flat pipe with an elliptical cross-section, the driving assembly 50 controls the welding head 23 to first slide along the straight portion of the outer circumference of the pipe opening of the pipe 200, then controls the welding head 23 to rotate half a circle around the semicircular portion of the outer circumference of the pipe opening of the pipe 200, and then repeats the translation and rotation operation to complete the welding of the pipe 200. This makes the laser welding device capable of laser welding both flat and round pipes, thereby improving its practicality.

Claims

1. A new energy pipe laser welding device, characterized by: It includes a frame on which pipes and joints are placed, a laser welding assembly and a driving assembly arranged on the frame. The laser welding assembly includes a mounting plate, a laser generator, a welding head, an optical path tube and a reflector arranged on the frame. The welding head is set toward the welding point of the pipe and the joint. The optical path tube is connected to the welding head. The reflector is located in the optical path tube. The driving assembly includes a driving motor arranged on the mounting plate. The laser beam emitted by the laser generator passes through the output shaft of the driving motor and is reflected by several reflectors in the optical path tube in turn and then emitted through the welding head. The driving assembly is used to control the movement of the welding head along the outer circumference of the pipe mouth.

2. The new energy pipe laser welding device according to claim 1 is characterized in that: The output shaft of the driving motor and the welding head are coaxially arranged.

3. The new energy pipe laser welding device according to claim 2 is characterized in that: The frame is provided with a slide rail 1, and the drive assembly also includes a sliding block and a screw drive module arranged on the mounting plate. The sliding block is slidably arranged on the slide rail 1 and is adapted to the slide rail 1. The screw drive module is used to drive the mounting plate to slide along the slide rail 1.

4. The new energy pipe laser welding device according to claim 2 or 3, characterized in that: One end of the optical tube is connected to the output shaft of the driving motor.

5. The new energy pipe laser welding device according to claim 1, characterized in that: The new energy pipe laser welding device also includes a conveying assembly arranged on the frame, and the conveying assembly includes a conveyor belt, a second slide rail and a conveying cylinder arranged on the frame, and a placement plate slidably arranged on the second slide rail. The piston rod of the conveying cylinder is connected to the placement plate, and the pipes and joints are conveyed to the placement plate through the conveyor belt, and then conveyed to the welding head through the conveying cylinder.

6. The new energy pipe laser welding device according to claim 5, characterized in that: The new energy pipe laser welding device also includes a pressing assembly arranged on the placement plate, and the pressing assembly includes a pressing plate 1 and a fixed plate arranged on the placement plate, a pressing plate 2 which is lifted and lowered on the fixed plate, and a pressing cylinder arranged on the fixed plate. The pressing plate 1 and the pressing plate 2 are correspondingly arranged, and the piston rod of the pressing cylinder is connected to the pressing plate 2. After the pipe fittings and joints are conveyed to the pressing plate 1 by the conveyor belt, the pressing plate 2 is controlled by the pressing cylinder to be lifted and lowered to press the pipe fittings and joints.

7. The new energy pipe laser welding device according to claim 6, characterized in that: The frame is provided with a mounting baffle, the mounting baffle is located between the welding head and the second slide rail, and the mounting baffle is provided with a mounting through groove for pipes and joints to pass through.

Images