Laser welding machine for center pipe assembly of oil nozzle

Abstract

The utility model relates to the technical field of laser welding, in particular to an oil nozzle center pipe assembly laser welding machine which comprises a welding machine frame and a support, the support is fixedly connected in the welding machine frame, a positioning mechanism is arranged in the support, a feeding mechanism is arranged in the welding machine frame, and a feeding mechanism is arranged in the welding machine frame. A third motor is fixedly connected into the welding machine frame, an output shaft of the third motor is fixedly connected with a lead screw, the outer walls of the two ends of the lead screw are rotationally connected with the welding machine frame through bearings, and the outer wall of the lead screw is in threaded connection with a lead screw nut. The first electric push rod drives the first supporting rod to move, the first supporting rod drives the two second supporting rods to move, the second supporting rods drive the sliding block to slide, the sliding block drives the vertical plate to move, the vertical plate drives the clamping blocks to move, the two clamping blocks are tightly attached to the two ends of the oil nozzle center pipe assembly, and the oil nozzle center pipe assembly is positioned. And automatic clamping of the oil nozzle center pipe assembly can be conveniently achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of laser welding, in particular to a laser welding machine for a central tube assembly of a fuel injection nozzle. Background Art

[0002] The fuel injector center tube assembly is usually installed at the end of the fuel injector, and the fuel injector center tube assembly needs to be laser welded before use.

[0003] For example, a six-axis fully automatic oil pipe laser welding device with patent number CN216680717U includes a connecting frame, a fixed rod is fixedly connected to the top of the connecting frame, a first moving rod is slidably connected to the surface of the fixed rod, a second moving rod is slidably connected to the surface of the first moving rod, and a mounting rod is slidably connected to the surface of the second moving rod. The above document still has shortcomings. When in use, the movement of the welding head can be controlled by the first moving rod, the second moving rod and the mounting rod. At the same time, the sphere and the mounting rod form a ball-and-socket structure, so that the angle of the welding head can be adjusted more flexibly, thereby realizing welding work in six axes or even more degrees of freedom. When the welding head is welding, the staff can put the oil pipe into the rectangular hole beside the connecting frame and limit it by the clamping plate. When the welding of the oil pipe on the plate is completed, the plate is directly taken out. However, the welding equipment in the above document needs to manually clamp the center pipe assembly of the fuel injector when in use, which is not convenient for realizing the automatic clamping of the center pipe assembly of the fuel injector. At the same time, when the center pipe assembly of the fuel injector is loaded, it is not convenient to realize the loading of the center pipe assembly of the fuel injector one by one. Utility Model Content

[0004] The utility model aims to solve the problem that it is inconvenient to realize automatic clamping of a center tube assembly of a fuel injection nozzle, and proposes a laser welding machine for the center tube assembly of the fuel injection nozzle.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A laser welding machine for a fuel injector center tube assembly is designed, comprising a welding machine frame and a bracket, wherein the bracket is fixedly connected to the inside of the welding machine frame, a positioning mechanism is arranged inside the bracket, a feeding mechanism is arranged inside the welding machine frame, a third motor is fixedly connected to the inside of the welding machine frame, a lead screw is fixedly connected to the output shaft of the third motor, outer walls at both ends of the lead screw are rotatably connected to the welding machine frame through bearings, and a lead screw nut is threadedly connected to the outer wall of the lead screw.

[0007] Preferably, the positioning mechanism includes a first electric push rod, which is fixedly connected to the bottom of the bracket, and the output end of the first electric push rod is fixedly connected to the first support rod, the left and right ends of the first support rod are rotatably connected to the second support rod through a pin shaft, and the end of the second support rod is rotatably connected to a slider through a pin shaft, the outer wall of the slider is slidably connected to the bracket, a vertical plate is fixedly connected to the top of the slider, and a clamping block is rotatably connected to the inner side of the vertical plate through a bearing, the clamping block on the right side is fixedly connected to the output shaft of the first motor, and the first motor is fixed to the outer wall of the vertical plate on the right side.

[0008] Preferably, the feeding mechanism includes a second motor, the second motor is fixedly connected to the inside of the welding machine frame, the output shaft of the second motor is fixedly connected to a disc, the surface of the disc is fixedly connected to a pin rod, the outer wall of the pin rod is slidably connected to a slide groove, the slide groove is fixedly connected to the outer wall of the push plate, the outer wall of the push plate is slidably connected to the material box, and the material box is fixedly connected to the inner wall of the welding machine frame.

[0009] Preferably, the outer wall of the lead screw nut is slidably connected to the welding machine frame, and a second electric push rod is fixedly connected below the lead screw nut.

[0010] Preferably, a material receiving plate and a first cylinder are fixedly connected to the outer wall of the material box.

[0011] Preferably, a moving block is fixedly connected to the output end of the first cylinder, and a second cylinder is rotatably connected to the lower side of the moving block via a bearing.

[0012] Preferably, the second cylinder is connected to an external power source.

[0013] Preferably, a robot is fixedly connected to the output end of the second cylinder.

[0014] Preferably, a welding head is fixedly connected to the output end of the second electric push rod.

[0015] The utility model proposes a laser welding machine for a center tube assembly of a fuel injector, and its beneficial effects are as follows: through the cooperation between the first electric push rod, the first support rod, the second support rod, the slider, the vertical plate, the clamping block and the second motor, the first electric push rod drives the first support rod to move, the first support rod drives the two second support rods to move, the second support rod drives the slider to slide, the slider drives the vertical plate to move, the vertical plate drives the clamping block to move, the two clamping blocks are tightly fitted with the two ends of the center tube assembly of the fuel injector, the center tube assembly of the fuel injector is positioned, and the automatic clamping of the center tube assembly of the fuel injector is realized.

[0016] Through the cooperation between the second motor, the disc, the pin rod, the slide groove, the push plate and the material box, the second motor drives the disc to rotate, the disc drives the pin rod to move, the pin rod drives the slide groove to move, the pin rod changes its vertical height during movement, and then the height of the slide groove changes, the slide groove drives the push plate to slide, the push plate lifts the injector center tube assembly on the far left in the material box, and drops it from the through hole position of the material box to the receiving plate, so that when the injector center tube assembly is loaded, it is convenient to load the injector center tube assembly one by one. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 It is a structural sectional view of the utility model;

[0019] Figure 3 It is a structural schematic diagram of the connection between the slideway and the push plate in the utility model;

[0020] Figure 4 It is a schematic diagram of the structure of the connection between the first support rod, the second support rod and the bracket in the utility model;

[0021] Figure 5 It is a structural schematic diagram of the connection between the second motor, the disc and the material box in the utility model;

[0022] Figure 6 It is a structural schematic diagram of the connection between the first cylinder, the moving block and the manipulator in the utility model.

[0023] In the figure: 1, welding machine frame, 2, bracket, 3, positioning mechanism, 301, first electric push rod, 302, first support rod, 303, second support rod, 304, slider, 305, vertical plate, 306, clamping block, 307, first motor, 3a1, cushion block, 4, feeding mechanism, 401, second motor, 402, disc, 403, pin rod, 404, slide, 405, push plate, 406, material box, 5, third motor, 6, screw, 7, screw nut, 8, second electric push rod, 9, welding head, 10, receiving plate, 11, first cylinder, 12, moving block, 13, second cylinder, 14, manipulator. DETAILED DESCRIPTION

[0024] The utility model is further described below in conjunction with the accompanying drawings:

[0025] Example 1: Refer to the attached Figure 1-6: In this embodiment, a laser welding machine for a center tube assembly of a fuel injector includes a welding machine frame 1 and a bracket 2, the bracket 2 is fixedly connected to the inside of the welding machine frame 1, a positioning mechanism 3 is arranged inside the bracket 2, the positioning mechanism 3 automatically clamps the center tube assembly of the fuel injector, a feeding mechanism 4 is arranged inside the welding machine frame 1, the feeding mechanism 4 realizes the feeding of the center tube assembly of the fuel injector one by one, a third motor 5 is fixedly connected to the inside of the welding machine frame 1, a screw 6 is fixedly connected to the output shaft of the third motor 5, and the third motor 5 drives the screw 6 to rotate;

[0026] The outer walls at both ends of the lead screw 6 are rotatably connected to the welding machine frame 1 through bearings, the outer wall of the lead screw 6 is threadedly connected with a lead screw nut 7, the lead screw 6 drives the lead screw nut 7 to slide, the outer wall of the lead screw nut 7 is slidably connected to the welding machine frame 1, a second electric push rod 8 is fixedly connected to the bottom of the lead screw nut 7, the lead screw nut 7 drives the second electric push rod 8 to move, a welding head 9 is fixedly connected to the output end of the second electric push rod 8, the electric push rod 8 drives the welding head 9 to move, the welding head 9 is a laser welding head, and the specific model is the same as a six-axis fully automatic oil pipe laser welding equipment with patent number CN216680717U.

[0027] The positioning mechanism 3 includes a first electric push rod 301, a first support rod 302, a second support rod 303, a slider 304, a vertical plate 305, a clamping block 306 and a second motor 307. The first electric push rod 301 is fixedly connected to the bottom of the bracket 2. The output end of the first electric push rod 301 is fixedly connected to the first support rod 302. The first electric push rod 301 drives the first support rod 302 to move. The left and right ends of the first support rod 302 are both rotatably connected to the second support rod 303 through a pin shaft. The first support rod 302 drives the two second support rods 303 to move. The end of the second support rod 303 is rotatably connected to the slider 304 through a pin shaft. The second support rod 303 drives the slider 304 to slide.

[0028] The outer wall of the slider 304 is slidably connected to the bracket 2, the slider 304 slides inside the bracket 2, a vertical plate 305 is fixedly connected above the slider 304, the slider 304 drives the vertical plate 305 to move, the inner side of the vertical plate 305 is rotatably connected to a clamping block 306 through a bearing, the vertical plate 305 drives the clamping block 306 to move, the right clamping block 306 is fixedly connected to the output shaft of the first motor 307, the first motor 307 drives the right clamping block 306 to rotate, and the first motor 307 is fixedly connected to the outer wall of the right vertical plate 305;

[0029] The first electric push rod 301 drives the first support rod 302 to move, the first support rod 302 drives the two second support rods 303 to move, the second support rods 303 drive the slider 304 to slide, the slider 304 drives the vertical plate 305 to move, the vertical plate 305 drives the clamping block 306 to move, the two clamping blocks 306 are tightly fitted with the two ends of the fuel injector center tube assembly to position the fuel injector center tube assembly, so as to realize automatic clamping of the fuel injector center tube assembly.

[0030] The feeding mechanism 4 includes a second motor 401, a disc 402, a pin 403, a chute 404, a push plate 405 and a material box 406. The second motor 401 is fixedly connected to the inside of the welding machine frame 1. The output shaft of the second motor 401 is fixedly connected to the disc 402. The second motor 401 drives the disc 402 to rotate. The surface of the disc 402 is fixedly connected to the pin 403. The disc 402 drives the pin 403 to move. The outer wall of the pin 403 is slidably connected to the chute 404. The pin 403 drives the chute 404 to move. The chute 404 is fixedly connected to the outer wall of the push plate 405. The chute 404 drives the push plate 405 to slide. The outer wall of the push plate 405 is slidably connected to the material box 406. The push plate 405 slides inside the material box 406. The material box 406 is fixedly connected to the inner wall of the welding machine frame 1;

[0031] The outer wall of the material box 406 is fixedly connected with a material receiving plate 10 and a first cylinder 11, and the material receiving plate 10 receives the central tube assembly of the fuel injector, and the output end of the first cylinder 11 is fixedly connected with a moving block 12, and the first cylinder 11 drives the moving block 12 to move, and the lower part of the moving block 12 is connected to a second cylinder 13 through a bearing rotation, and the moving block 12 drives the second cylinder 13 to move, and the second cylinder 13 is connected to an external power source, and the external power source is a motor, and the output end of the second cylinder 13 is fixedly connected with a manipulator 14, and the second cylinder 13 drives the manipulator 14 to move, and the manipulator 14 is a three-axis manipulator, which is a common manipulator, consisting of three axes of X, Y, and Z, and has a relatively large range of motion, and can complete a variety of different tasks, such as spraying, cutting, assembling, extruding, clamping, etc., and the specific structure and workflow are the same as those of the manipulator in Patent No. CN112018024A;

[0032] The second motor 401 drives the disc 402 to rotate, and the disc 402 drives the pin 403 to move, and the pin 403 drives the slide 404 to move. The pin 403 changes its vertical height during movement, and then the height of the slide 404 changes, and the slide 404 drives the push plate 405 to slide, and the push plate 405 lifts the leftmost injector center tube assembly in the material box 406, and drops it from the through hole position of the material box 406 to the receiving plate 10, so that when the injector center tube assembly is loaded, it is convenient to load the injector center tube assembly one by one.

[0033] Working principle:

[0034] When welding the center tube assembly of the fuel injector;

[0035] Injector center tube assembly loading stage:

[0036] The fuel injector center tube assembly to be welded is placed into the material box 406, and the second motor 401 is started. The second motor 401 drives the disc 402 to rotate, and the disc 402 drives the pin 403 to move. The pin 403 drives the slide 404 to move. The pin 403 changes its vertical height during movement, and then the height of the slide 404 changes. The slide 404 drives the push plate 405 to slide. The push plate 405 lifts the fuel injector center tube assembly on the far left in the material box 406, and drops it from the through hole position of the material box 406 onto the receiving plate 10. When the fuel injector center tube assembly is loaded, it is convenient to load the fuel injector center tube assembly one by one.

[0037] Injector center tube assembly positioning stage:

[0038] The first cylinder 11 drives the motion block 12 to move, and the motion block 12 drives the manipulator 14 to move through the second cylinder 13, thereby adjusting the left and right directions of the manipulator 14, and the second cylinder 13 adjusts the vertical movement of the manipulator 14, and the manipulator 14 grabs the nozzle center tube assembly in the receiving plate 10, and the external power source controls the manipulator to rotate, thereby adjusting the direction of the nozzle center tube assembly, and transporting the nozzle center tube assembly to between the two clamping blocks 306, and starting the first electric push rod 301, the first electric push rod 301 drives the first support rod 302 to move, the first support rod 302 drives the two second support rods 303 to move, the second support rod 303 drives the slider 304 to slide, the slider 304 drives the vertical plate 305 to move, and the vertical plate 305 drives the clamping block 306 to move, and the two clamping blocks 306 are tightly fitted with the two ends of the nozzle center tube assembly to position the nozzle center tube assembly, so as to realize the automatic clamping of the nozzle center tube assembly;

[0039] Injector center tube assembly welding stage:

[0040] The third motor 5 drives the lead screw 6 to rotate, and the lead screw 6 drives the lead screw nut 7 to slide. The lead screw nut 7 drives the welding head 9 to move through the second electric push rod 8, so that the welding head 9 is above the position where the nozzle center tube assembly needs to be welded. The second electric push rod 8 drives the welding head 9 to descend to perform laser welding on the nozzle center tube assembly. The first motor 307 drives the clamping block 306 on the right to rotate, thereby driving the nozzle center tube assembly to rotate, and welding is performed on multiple positions of the outer wall of the nozzle center tube assembly.

[0041] Example 2: Refer to the attached Figure 1-6: In this embodiment, a laser welding machine for a center tube assembly of a fuel injector, the positioning mechanism 3 further comprises a cushion block 3a1, the cushion block 3a1 is fixedly connected to the upper surface of the bracket 2, and the cushion block 3a1 cushions the center tube assembly of the fuel injector;

[0042] Through the action of the cushion block 3a1, the cushion block 3a1 is fixed to the upper surface of the bracket 2, and the cushion block 3a1 cushions the fuel injector center tube assembly, thereby playing a certain supporting role for the fuel injector center tube assembly.

[0043] Working principle:

[0044] The cushion block 3a1 is fixedly connected to the upper surface of the bracket 2. The cushion block 3a1 cushions the fuel injector center tube assembly and plays a certain supporting role for the fuel injector center tube assembly.

[0045] Although the present invention has been shown and described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein within the scope of the claims.

Claims

1. A laser welding machine for a fuel injector center tube assembly, comprising a welding machine frame (1) and a bracket (2), wherein the bracket (2) is fixedly connected to the inside of the welding machine frame (1), and is characterized in that: A positioning mechanism (3) is provided inside the bracket (2), a feeding mechanism (4) is provided inside the welding machine frame (1), a third motor (5) is fixedly connected inside the welding machine frame (1), an output shaft of the third motor (5) is fixedly connected to a lead screw (6), outer walls at both ends of the lead screw (6) are rotatably connected to the welding machine frame (1) via bearings, and a lead screw nut (7) is threadedly connected to the outer wall of the lead screw (6).

2. The laser welding machine for the center tube assembly of a fuel injector according to claim 1, characterized in that: The positioning mechanism (3) comprises a first electric push rod (301), the first electric push rod (301) is fixedly connected to the bottom of the bracket (2), the output end of the first electric push rod (301) is fixedly connected to a first support rod (302), the left and right ends of the first support rod (302) are rotatably connected to a second support rod (303) via a pin shaft, the end of the second support rod (303) is rotatably connected to a slider (304) via a pin shaft, the outer wall of the slider (304) is slidably connected to the bracket (2), a vertical plate (305) is fixedly connected to the top of the slider (304), the inner side of the vertical plate (305) is rotatably connected to a clamping block (306) via a bearing, the right side of the clamping block (306) is fixedly connected to the output shaft of the first motor (307), and the first motor (307) is fixedly connected to the outer wall of the vertical plate (305) on the right side.

3. The laser welding machine for the center tube assembly of a fuel injector according to claim 1, characterized in that: The feeding mechanism (4) comprises a second motor (401), the second motor (401) is fixedly connected to the inside of the welding machine frame (1), the output shaft of the second motor (401) is fixedly connected to a disc (402), the surface of the disc (402) is fixedly connected to a pin rod (403), the outer wall of the pin rod (403) is slidably connected to a slide groove (404), the slide groove (404) is fixedly connected to the outer wall of a push plate (405), the outer wall of the push plate (405) is slidably connected to a material box (406), and the material box (406) is fixedly connected to the inner wall of the welding machine frame (1).

4. The laser welding machine for the center tube assembly of a fuel injector according to claim 1, characterized in that: The outer wall of the lead screw nut (7) is slidably connected to the welding machine frame (1), and a second electric push rod (8) is fixedly connected below the lead screw nut (7).

5. The laser welding machine for the center tube assembly of a fuel injector according to claim 3, characterized in that: A material receiving plate (10) and a first cylinder (11) are fixedly connected to the outer wall of the material box (406).

6. The laser welding machine for the center tube assembly of a fuel injector according to claim 5, characterized in that: The output end of the first cylinder (11) is fixedly connected to a moving block (12), and the lower part of the moving block (12) is rotatably connected to a second cylinder (13) via a bearing.

7. The laser welding machine for the center tube assembly of a fuel injector according to claim 6, characterized in that: The second cylinder (13) is connected to an external power source.

8. The laser welding machine for the center tube assembly of a fuel injector according to claim 6, characterized in that: The output end of the second cylinder (13) is fixedly connected to a robot arm (14).

9. The laser welding machine for the center tube assembly of a fuel injector according to claim 4, characterized in that: A welding head (9) is fixedly connected to the output end of the second electric push rod (8).

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