Welding tool for upper cover and lower cover of square cylinder

Abstract

The utility model belongs to the technical field of water dispenser water tank welding, and particularly relates to a square cylinder upper cover and lower cover welding tool which comprises a base and a vertical plate perpendicularly arranged at the upper end, the welding tool is used for positioning a water tank before welding, the welding tool is used in cooperation with a six-axis welding robot, and a lower flat plate is fixed to the upper end of the vertical plate. An upper flat plate is fixed to the top of the lower flat plate, and an inner hole used for containing a water tank is formed in the upper flat plate. The tool is used in cooperation with a welding robot, a water tank is welded through the six-axis welding robot after being positioned through the tool, the water tank is placed in an inner hole of an upper flat plate, and the flatness consistency of the water tank and a welding face is guaranteed through an upper jacking air cylinder and a rotating air cylinder, so that the welding levelness and the product quality are guaranteed, and meanwhile taking and placing are convenient; and secondly, accurate positioning of the water tank is guaranteed through positioning of the left positioning strip and the front positioning strip and pushing of the side pushing air cylinder and the rear pushing air cylinder, the consistency of the welding track of the robot is kept, and the product quality is guaranteed.

Description

Technical Field

[0001] This utility model belongs to the field of water tank welding technology for water dispensers, specifically relating to a welding fixture for the upper and lower covers of a square cylinder. Background Technology

[0002] The water tank is an important component of a water dispenser, mainly used to store and supply drinking water. Most water tanks on the market are round or oval, while square water tanks offer more efficient space utilization in design and have advantages such as easy stacking and storage.

[0003] As attached Figure 3 The water tank 100 shown consists of a body 101, an upper cover 102, and a bottom cover 103. The upper cover 102 and the bottom cover 103 are welded to the upper and lower ends of the body 101 to form the water tank 100. However, traditionally, it is done by hand welding. Traditional hand welding is difficult to coordinate in terms of welding speed and current. If the speed is too fast, the current cannot keep up, and the welding strength does not meet the requirements. If the speed is too slow, the current is too high, which damages the metallographic structure of the stainless steel material. After a period of use, rust and leakage gradually appear, so the product quality is difficult to control.

[0004] To address the aforementioned issues, this application proposes a welding fixture for the upper and lower covers of a square cylinder. Utility Model Content

[0005] To address the aforementioned problems in the existing technology, this utility model provides a welding fixture for the upper and lower covers of a square cylinder, which features convenient and precise positioning.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a welding fixture for the upper and lower covers of a square cylinder, comprising a base and a vertically arranged upright plate at the upper end. The welding fixture is used for positioning the water tank before welding. The welding fixture is used in conjunction with a six-axis welding robot. A lower plate is fixed to the upper end of the upright plate, and an upper plate is fixed to the top of the lower plate. The upper plate has an inner hole for accommodating the water tank. An upper-lifting cylinder is provided on the base to push the water tank upward. An upper-lifting slider is fixed to the upper end of the upper-lifting cylinder to lift the bottom of the water tank. A rotary cylinder is fixedly mounted on the upper part of the plate, which works with the top cylinder to position the water tank vertically. A side-push cylinder and a rear-push cylinder are horizontally arranged on the upper plate. A left positioning bar is fixedly arranged on the upper plate, which is opposite to the side-push cylinder and clamps the water tank left and right. A front positioning bar is also fixedly arranged on the upper plate, which is opposite to the rear-push cylinder and clamps the water tank front and back. The top cylinder and the rotary cylinder position the water tank to the same level as the welding surface. The side-push cylinder, the rear-push cylinder, the left positioning bar, and the front positioning bar position the water tank on the robot's walking trajectory.

[0007] As a preferred technical solution of this utility model, the rotary cylinder has four corresponding sets at the four corners along the inner hole on the upper plate, the output end of the rotary cylinder is provided with a positioning block that fits against the top of the water tank, and the upper lifting cylinder and the upper lifting slider are provided with two sets to push the water tank upward to be positioned with the positioning block.

[0008] As a preferred embodiment of this utility model, the upright plate consists of two symmetrically distributed plates that are fixedly installed with the lower plate and the upper plate, and the lower plate and the upper plate are parallel to each other.

[0009] As a preferred embodiment of this utility model, the lower plate is equipped with a guide rail that cooperates with the upper slider, and the upper slider slides vertically on the guide rail via an upper cylinder.

[0010] As a preferred technical solution of this utility model, the inner sides of the left positioning strip and the front positioning strip are flush with the inner wall of the inner hole, forming two planes for positioning the water tank and the welding travel trajectory.

[0011] As a preferred technical solution of this utility model, both the side-push cylinder and the rear-push cylinder are provided with pressure plates at their output ends. The pressure plates are pushed by the cylinders to press the water tank tightly against the two planes.

[0012] As a preferred technical solution of this utility model, a side-push solenoid valve for driving the side-push cylinder is provided on one side of the vertical plate below the side-push cylinder, and a rear-push solenoid valve for driving the rear-push cylinder is provided on the other side of the vertical plate.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] By working in conjunction with a welding robot, the tooling positions the water tank and then the six-axis welding robot performs the welding. The water tank is placed in the inner hole of the upper plate. The upper top cylinder and the rotating cylinder ensure the consistency of the flatness between the water tank and the welding surface, thereby ensuring the welding levelness, ensuring product quality, and facilitating handling.

[0015] Secondly, the positioning of the water tank is ensured by setting the left and front positioning bars and pushing the side and rear push cylinders, and the water tank is kept in a consistent position with the robot's welding trajectory, thus ensuring product quality.

[0016] In summary, this utility model is simple and convenient to operate, has a reliable structure, and effectively ensures the pass rate of products leaving the factory. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0018] Figure 1 This is a schematic diagram of the structure of the present invention from the front view.

[0019] Figure 2 This is a top view of the structure of this utility model;

[0020] In the diagram: 1. Base; 2. Vertical plate; 3. Lower plate; 4. Upper plate; 41. Inner hole; 5. Upper top cylinder; 6. Upper top slider; 7. Rotary cylinder; 71. Positioning block; 8. Side push cylinder; 9. Side push solenoid valve; 10. Rear push cylinder; 11. Rear push solenoid valve; 12. Left positioning bar; 13. Front positioning bar.

[0021] Figure 3 This is a schematic diagram of the water tank structure;

[0022] In the diagram: 100, water tank; 101, barrel body; 102, top cover; 103, bottom cover. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Example: Please refer to Figure 1-2 This utility model provides the following technical solution: a welding fixture for the upper and lower covers of a square cylinder, including a base 1 and a vertically arranged upright plate 2 at the upper end. The welding fixture is used for positioning the water tank 100 before welding. The welding fixture is used in conjunction with a six-axis welding robot. A lower plate 3 is fixed to the upper end of the upright plate 2, and an upper plate 4 is fixed to the top of the lower plate 3. The upper plate 4 has an inner hole 41 for accommodating the water tank 100. An upper-lifting cylinder 5 is provided on the base 1 to push the water tank 100 upward. An upper-lifting slider 6 is fixedly connected to the upper end of the upper-lifting cylinder 5 to lift the bottom of the water tank 100. The upper part of the upper plate 4 is fixedly equipped with an upper-lifting slider 6 to lift the bottom of the water tank 100. The cylinder 5 works in conjunction with the rotary cylinder 7 to position the water tank 100 vertically. The upper plate 4 is horizontally equipped with a side-push cylinder 8 and a rear-push cylinder 10. The upper plate 4 is fixedly equipped with a left positioning bar 12 that is opposite to the side-push cylinder 8 and clamps the water tank 100 left and right. The upper plate 4 is also fixedly equipped with a front positioning bar 13 that is opposite to the rear-push cylinder 10 and clamps the water tank 100 front and back. The upper cylinder 5 and the rotary cylinder 7 position the water tank 100 to the same level as the welding surface. The side-push cylinder 8, the rear-push cylinder 10, the left positioning bar 12, and the front positioning bar 13 position the water tank 100 on the robot's walking trajectory.

[0025] Specifically, the rotary cylinder 7 has four sets of corresponding cylinders at the four corners of the inner hole 41 on the upper plate 4. The output end of the rotary cylinder 7 is provided with a positioning block 71 that fits against the top of the water tank 100. The upper cylinder 5 and the upper slider 6 are provided with two sets to push the water tank 100 upward to be positioned with the positioning block 71. In this embodiment, the upper positioning of the rotary cylinder 7 and the lower positioning of the upper cylinder 5 cooperate to make the water tank 100 be placed at the same level as the welding surface.

[0026] Specifically, the upright plate 2 consists of two symmetrically distributed plates and is fixedly installed with the lower plate 3 and the upper plate 4. The lower plate 3 and the upper plate 4 are parallel to each other. In this embodiment, the lower plate 3 and the upper top slider 6 cooperate to form a placement platform for the water tank 100. The upper plate 4 forms a horizontal installation platform for the rotary cylinder 7, the side push cylinder 8, and the rear push cylinder 10, thereby ensuring accurate and stable positioning of the water tank 100.

[0027] Specifically, a guide rail is installed on the lower plate 3 to cooperate with the upper slider 6. The upper slider 6 slides vertically on the guide rail through the upper cylinder 5. The vertical rail in this embodiment is a conventional means of the prior art, which ensures that the upper cylinder 5 drives the upper slider 6 to rise and fall vertically stably.

[0028] Specifically, the inner sides of the left positioning strip 12 and the front positioning strip 13 are flush with the inner wall of the inner hole 41, forming two planes that position the water tank 100 with the welding travel trajectory. In this embodiment, by forming positioning planes on two surfaces at an included angle of the water tank 100, a fixed reference can be formed when the water tank 100 is finally positioned. After the water tank 100 is positioned, it is consistent with the welding travel trajectory, thereby ensuring welding consistency and reliability.

[0029] Specifically, both the output ends of the side-push cylinder 8 and the rear-push cylinder 10 are equipped with pressure plates. The pressure plates are pushed by the cylinders to press the water tank 100 tightly against the two planes. On one side of the vertical plate 2 below the side-push cylinder 8, there is a side-push solenoid valve 9 that drives the side-push cylinder 8. On the other side of the vertical plate 2, there is a rear-push solenoid valve 11 that drives the rear-push cylinder 10. In this embodiment, when it is necessary to press the water tank 100 tightly, the two solenoid valves simultaneously drive the pressure plates on the cylinders to extend outward, thereby pressing the water tank 100 tightly. When it is necessary to loosen, the solenoid valves are reversed, which can drive the pressure plates to reset.

[0030] The working principle and usage process of this utility model are as follows: a six-axis welding robot is used in conjunction with this welding fixture, and a program is written into it;

[0031] During welding, after assembling the water tank 100, it is manually placed into the inner hole of the upper plate 4. The program button is pressed, and the four rotary cylinders 7 on the upper plate 4 rotate and position themselves. At this point, the positioning block 71 is directly above the water tank 100. Next, the two upper-push cylinders 5 on the base 1 drive the two upper-push sliders 6 to rise, pressing the upper surface of the water tank 100 to be welded tightly against the lower surface of the positioning block 71. Immediately afterwards, the side-push cylinder 8, driven by the side-push solenoid valve 9, pushes to the left, and the rear-push cylinder 10, driven by the rear-push solenoid valve 11, pushes forward. The water tank 100 firmly adheres to the left positioning strip 12 and the front positioning strip 13, completing the positioning of the plane and the travel trajectory. Then, the upper-push cylinder 5 drives the upper-push slider 6 to reset downwards, and after the rotary cylinder 7 resets, the positioning block 71 detaches from the side of the water tank 100. Upon receiving the reset command from the rotary cylinder 7, the welding robot starts the welding program and completes the welding. Finally, after the robot completes the welding, the side-push solenoid valve 9 and the rear-push solenoid valve 11 reverse direction, the side-push cylinder 8 and the rear-push cylinder 10 reset, completing the entire process, and the welded water tank 100 is taken out.

[0032] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A square cylinder upper and lower cover welding tool, comprising a base (1) and an upright plate (2) vertically arranged at the upper end, the welding tool is used for positioning the water tank (100) before welding, and the welding tool is used in cooperation with a six-axis welding robot, characterized in that: The lower flat plate (3) is fixed on the upper end of the vertical plate (2), the upper flat plate (4) is fixed on the top of the lower flat plate (3), the inner hole (41) for accommodating the water tank (100) is arranged in the upper flat plate (4), the upper lifting cylinder (5) for lifting the water tank (100) upward is arranged on the base (1), the upper lifting slide block (6) for supporting the bottom of the water tank (100) is fixed on the upper end of the upper lifting cylinder (5), the rotary cylinder (7) for positioning the water tank (100) upward and downward is fixed on the upper part of the upper flat plate (4) and matched with the upper lifting cylinder (5), the side pushing cylinder (8) and the rear pushing cylinder (10) are horizontally arranged on the upper flat plate (4), the left positioning strip (12) is fixed on the upper flat plate (4) and matched with the side pushing cylinder (8) and used for clamping the water tank (100) left and right, and the front positioning strip (13) is also fixed on the upper flat plate (4) and matched with the rear pushing cylinder (10) and used for clamping the water tank (100) front and back. The upper lifting cylinder (5) and the rotary cylinder (7) position the water tank (100) to the same horizontal degree as the welding surface, and the side pushing cylinder (8), the rear pushing cylinder (10), the left positioning strip (12) and the front positioning strip (13) position the water tank (100) on the robot walking track.

2. The square cylinder upper and lower cover welding tooling according to claim 1, characterized in that: Four groups of rotary cylinders (7) are arranged on the upper flat plate (4) and correspond to four corners of the inner hole (41), and the output end of the rotary cylinder (7) is provided with the positioning block (71) matched with the top of the water tank (100), and the upper lifting cylinder (5) and the upper lifting slide block (6) are provided with two groups of structures for lifting the water tank (100) upward to be positioned by the positioning block (71).

3. The square cylinder upper and lower cover welding tooling according to claim 1, characterized in that: The vertical plate (2) is symmetrically distributed and fixedly installed with the lower flat plate (3) and the upper flat plate (4), and the lower flat plate (3) and the upper flat plate (4) are arranged in parallel.

4. The square cylinder upper and lower cover welding tooling according to claim 3, characterized in that: The guide rail matched with the upper lifting slide block (6) is installed on the lower flat plate (3), and the upper lifting slide block (6) vertically slides on the guide rail through the upper lifting cylinder (5).

5. The square cylinder upper and lower cover welding tooling according to claim 1, characterized in that: The inner sides of the left positioning strip (12) and the front positioning strip (13) are flush with the inner wall of the inner hole (41), so as to form two planes for positioning the water tank (100) and the welding walking track.

6. The square cylinder upper and lower cover welding tooling according to claim 5, characterized in that: The pressing plates are arranged on the output ends of the side pushing cylinder (8) and the rear pushing cylinder (10), and the pressing plates are driven by the cylinders to tightly press the water tank (100) on the two planes.

7. The square cylinder upper and lower cover welding tooling according to claim 1, characterized in that: The side pushing electromagnetic valve (9) for driving the side pushing cylinder (8) is arranged on one side of the vertical plate (2) below the side pushing cylinder (8), and the rear pushing electromagnetic valve (11) for driving the rear pushing cylinder (10) is arranged on the other side of the vertical plate (2).

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