A welding device for a coal mill shell

Abstract

The utility model discloses a kind of welding devices of coal mill shell, it is related to the technical field of coal mill shell processing, including workbench and industrial robot, the industrial robot is located on workbench and its end effector is equipped with welding torch, the workbench is rotatably connected with connecting column, the top of the connecting column is equipped with turntable, the turntable is equipped with limit slot, the workbench bottom is equipped with driving assembly, the workbench top is also equipped with positioning assembly. The driving assembly of the present application is cooperated to realize shell rotation, so that welding torch can contact welding position in all directions, without frequent adjustment shell position, simplify operation process, save auxiliary time. Positioning assembly accurately fixes shell, limit slot and protrusion cooperate to prevent shell circumferential displacement, elbow clamp reinforced fixation, provide stable foundation for welding. Positioning block and elastic clamping piece cooperate to strengthen plate positioning clamping, ensure that it is closely attached with shell, accurate alignment, guarantee welding precision.

Description

Technical Field

[0001] This utility model relates to the technical field of coal mill shell processing, and specifically to a welding device for coal mill shells. Background Technology

[0002] During the manufacturing process of the coal mill shell, welding is performed on the shell as follows: Figure 1 The reinforcing plate shown is one of the key processes. Due to the large number of reinforcing plates, the accuracy of traditional manual operation is limited, making it difficult to accurately position the reinforcing plates. When welding the coal mill shell, the positioning deviation often requires multiple corrections, resulting in low efficiency. Summary of the Invention

[0003] The purpose of this invention is to provide a welding device for a coal mill shell to overcome the above-mentioned defects in the prior art.

[0004] A welding device for a coal mill shell includes a workbench and an industrial robot. The industrial robot is mounted on the workbench and has a welding gun installed on its end effector. A connecting column is rotatably connected to the workbench. A turntable is provided on the top of the connecting column. The turntable has a limiting groove for limiting protrusions on the shell. A drive assembly for rotating the turntable is provided at the bottom of the workbench. A positioning assembly for positioning a reinforcing plate on the shell is also provided at the top of the workbench.

[0005] Preferably, the drive assembly includes a drive motor, a first gear, and a second gear. The drive motor is mounted on the bottom of the worktable, and a first gear is mounted on its output shaft. The first gear meshes with the second gear on the connecting column.

[0006] Preferably, the positioning assembly includes an elbow clamp, a support frame, a cylinder, and a limiting cylinder. The elbow clamp is mounted on a turntable and is used to clamp the housing. The support frame is mounted on a workbench and has a cylinder installed on it. The limiting cylinder is slidably connected to the piston rod of the cylinder. A baffle is provided at the lower end of the piston rod of the cylinder. A ball bearing is rolledly connected to the bottom of the baffle. A baffle is provided inside the limiting cylinder below the ball bearing. Several positioning blocks are evenly distributed along the lower circumference of the limiting cylinder.

[0007] Preferably, the support frame has an inverted "L" shaped structure.

[0008] Preferably, the side of the positioning block is provided with an elastic clip.

[0009] Preferably, the positioning block has a fan-shaped structure.

[0010] Preferably, the height of the positioning block is the same as the height of the highest point of the reinforcing plate on the housing.

[0011] The beneficial effects achieved by this utility model are as follows:

[0012] The drive assembly of this application rotates the housing, allowing the welding torch to contact the welding area from all directions, eliminating the need for frequent housing position adjustments, simplifying the operation process, and saving auxiliary time. The positioning assembly precisely fixes the housing, with limiting grooves and protrusions working together to prevent circumferential displacement of the housing, and the elbow clamp providing reinforced fixation, offering a stable foundation for welding. The positioning block and elastic clamping piece work together to position and clamp the reinforcing plate, ensuring a tight fit with the housing, precise alignment, and guaranteeing welding accuracy. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of the shell of this utility model.

[0014] Figure 2 This is a schematic diagram of the overall structure of this utility model.

[0015] Figure 3 This is a schematic diagram of the structure of the limiting cylinder and positioning block of this utility model.

[0016] Figure 4 This is a schematic diagram of the structure of the cylinder, baffle, and ball bearings of this utility model.

[0017] In the diagram, 1. Workbench; 2. Industrial robot; 21. Welding torch; 3. Connecting column; 4. Turntable; 5. Drive assembly; 51. Drive motor; 52. Gear 1; 53. Gear 2; 6. Positioning assembly; 61. Elbow clamp; 62. Support frame; 63. Cylinder; 64. Baffle; 641. Ball bearing; 65. Limiting cylinder; 651. Baffle; 66. Positioning block; 67. Elastic clamp; 7. Shell; 71. Reinforcing plate; 72. Protrusion; 73. Cylinder. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims and drawings of this application are intended to cover non-exclusive inclusion.

[0020] The term "embodiment" as used herein means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of the phrase "embodiment" in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0021] like Figure 1-4 As shown, this utility model provides a welding device for a coal mill shell, including a workbench 1 and an industrial robot 2. The industrial robot 2 is mounted on the workbench 1 and a welding gun 21 is installed on its end effector. A connecting column 3 is rotatably connected to the workbench 1. A turntable 4 is provided on the top of the connecting column 3. The turntable 4 is provided with a limiting groove for limiting the protrusion 72 on the shell 7.

[0022] It should be noted that the bottom of the workbench 1 is provided with a drive assembly 5 for rotating the turntable 4. The drive assembly 5 includes a drive motor 51, a first gear 52 and a second gear 53. The drive motor 51 is mounted on the bottom of the workbench 1 and a first gear 52 is mounted on its output shaft. The first gear 52 meshes with the second gear 53 on the connecting column 3.

[0023] In addition, the top of the workbench 1 is provided with a positioning component 6 for positioning the reinforcing plate 71 on the housing 7. The positioning component 6 includes an elbow clamp 61, a support frame 62, a cylinder 63, and a limiting cylinder 65. The elbow clamp 61 is located on the turntable 4 and is used to clamp the housing 7. The inverted "L"-shaped support frame 62 is located on the workbench 1 and a cylinder 63 is mounted on it. The limiting cylinder 65 is slidably connected to the piston rod of the cylinder 63. A baffle 64 is provided at the lower end of the piston rod of the cylinder 63. A ball bearing 641 is rotatably connected to the bottom of the baffle 64. A baffle 651 is provided inside the limiting cylinder 65 below the ball bearing 641. The ball bearing 641 presses against the baffle 651, which does not obstruct the rotation of the turntable 4 and the housing 7 under the action of the drive component 5, so that the welding torch 21 can weld the reinforcing plate 71 in other parts.

[0024] In addition, a number of fan-shaped positioning blocks 66 are evenly distributed along the lower circumference of the limiting cylinder 65. The side of the positioning block 66 is provided with an elastic clamping piece 67. The height of the positioning block 66 is the same as the height of the highest point of the reinforcing plate 71 on the housing 7, so as to position the reinforcing plate 71 and prevent the reinforcing plate 71 from being offset.

[0025] Detailed implementation methods and principles:

[0026] The protrusion 72 at the bottom of the shell 7 to be processed is inserted into the limiting groove on the turntable 4 for limiting. Then, the shell 7 is fixed by the elbow clamp 61. Then, the piston rod of the control cylinder 63 drives the limiting cylinder 65 to move down, so that the limiting cylinder 65 is sleeved on the cylinder 73 of the shell 7. The positioning block 66 on the limiting cylinder 65 is located on the shell 7. The piston rod of the cylinder 63 continues to move down, so that the ball 641 on the baffle 64 hits the baffle 651 inside the limiting cylinder 65.

[0027] Next, the reinforcing plate 71 to be welded is inserted into the gap between the two positioning blocks 66, and the inner end of the reinforcing plate 71 is pushed to contact the outer side of the cylinder 73 of the housing 7. The elastic clips 67 on the side of the positioning blocks 66 clamp and fix the reinforcing plate 71.

[0028] After all the reinforcing plates 71 have been placed, the welding gun 21 on the industrial robot 2 performs preliminary welding on the part of the reinforcing plate 71 located outside the positioning block 66, and drives the gear 52 and gear 53 to rotate through the output shaft of the drive motor 51, so that the housing 7 on the turntable 4 rotates, making it easier for the welding gun 21 to perform welding.

[0029] When each reinforcing plate 71 is initially welded onto the housing 7, the baffle 64 on the piston rod of the control cylinder 63 drives the limiting cylinder 65 to move upward, causing the positioning block 66 on the limiting cylinder 65 to disengage from the reinforcing plate 71.

[0030] Next, the welding torch 21 on the industrial robot 2 continues to weld the reinforcing plate 71 completely onto the housing 7.

[0031] The embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. A welding device for a coal mill shell, comprising a workbench (1) and an industrial robot (2), wherein the industrial robot (2) is mounted on the workbench (1) and a welding torch (21) is mounted on its end effector, characterized in that: The workbench (1) is rotatably connected to a connecting column (3), and a turntable (4) is provided on the top of the connecting column (3). The turntable (4) is provided with a limiting groove for limiting the protrusion (72) on the housing (7). The bottom of the workbench (1) is provided with a drive assembly (5) for rotating the turntable (4). The top of the workbench (1) is also provided with a positioning assembly (6) for positioning the reinforcing plate (71) on the housing (7).

2. The welding device for a coal mill shell according to claim 1, characterized in that: The drive assembly (5) includes a drive motor (51), a first gear (52) and a second gear (53). The drive motor (51) is mounted on the bottom of the workbench (1) and a first gear (52) is mounted on its output shaft. The first gear (52) meshes with the second gear (53) on the connecting column (3).

3. The welding device for a coal mill shell according to claim 1, characterized in that: The positioning component (6) includes an elbow clamp (61), a support frame (62), a cylinder (63), and a limiting cylinder (65). The elbow clamp (61) is mounted on a turntable (4) and is used to clamp the housing (7). The support frame (62) is mounted on a workbench (1) and a cylinder (63) is mounted on it. The limiting cylinder (65) is slidably connected to the piston rod of the cylinder (63). A baffle (64) is provided at the lower end of the piston rod of the cylinder (63). A ball bearing (641) is rolled at the bottom of the baffle (64). A baffle (651) is provided inside the limiting cylinder (65) below the ball bearing (641). Several positioning blocks (66) are evenly distributed along the lower circumference of the limiting cylinder (65).

4. The welding device for a coal mill shell according to claim 3, characterized in that: The support frame (62) has an inverted "L" shaped structure.

5. The welding device for a coal mill shell according to claim 3, characterized in that: The positioning block (66) is provided with an elastic clip (67) on its side.

6. The welding device for a coal mill shell according to claim 3, characterized in that: The positioning block (66) has a fan-shaped structure.

7. The welding device for a coal mill shell according to claim 3, characterized in that: The height of the positioning block (66) is the same as the height of the highest point of the reinforcing plate (71) on the shell (7).

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