Water heater inner container end welding tool

Abstract

The utility model relates to the technical field of water heater manufacturing, in particular to a water heater inner container end welding tool. Comprising a support, an overturning workbench and a first inner container end workpiece clamp, the overturning workbench is rotationally connected with the support, and the first inner container end workpiece clamp is fixedly connected to the overturning workbench. Through the design of the overturning workbench, the angle of the end of the water heater inner container relative to the horizontal plane is rotated in cooperation with the motion parameters of the mechanical arm, and welding operation of the mechanical arm for welding is facilitated; and through the design of the first part clamp, the workpiece is clamped, and the inner side of the workpiece faces upwards, so that welding operation is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of water heater manufacturing, in particular to a welding tool for the end of an inner tank of a water heater. Background Art

[0002] The workpiece at the end of the water heater tank is generally a shell that is approximately hemispherical. During processing, various pipes will be welded on the shell for water flow to pass through. During processing, the shell needs to be positioned and clamped before the welding process. For example, a welding tool for a water heater water pipe head disclosed in Chinese patent application publication number CN113084435A on July 9, 2021. It includes a workbench for supporting the end cover of the water heater tank, at least one positioning structure, and a fixed structure for fixing the water heater water pipe head. The positioning structure is vertically arranged on the workbench, and the end of the positioning structure is provided with a positioning portion extending out of the welding hole on the end cover of the water heater tank. The workbench is also provided with a driving device for driving the fixed structure to move in a vertical direction. The driving device is connected to the fixed structure, and the fixed structure is used to press the water heater water pipe head against the end of the positioning structure under the action of the driving device. The present invention ensures that the forces at the upper and lower ends of the water heater water pipe head are kept vertical, so that the water heater water pipe head maintains a vertical state relative to the end cover of the water heater tank, avoids the problem of tilting of the water heater water pipe head, and ensures the welding quality of the water heater water pipe head.

[0003] This solution can mainly ensure that the water pipe of the water heater is in a vertical state relative to the end cover of the water heater inner tank, but its welding hole still has a certain inclination angle relative to the horizontal plane, which is not conducive to manual or welding operations by welding robot arms. In addition, during the positioning process, the end cover of the water heater inner tank is buckled on the positioning device, resulting in welding that can only be performed on the outside of the end cover of the water heater inner tank. Utility Model Content

[0004] In view of the shortcomings of the prior art, the purpose of the present invention is to:

[0005] 1. Provide a welding tool for the end of the inner tank of a water heater, so that it can be used to weld at the welding point between the inner side of the end of the inner tank of the water heater and the parts.

[0006] 2. Provide a welding tool for the end of the inner tank of a water heater, which can rotate the angle of the end of the inner tank of the water heater relative to the horizontal plane in accordance with the motion parameters of the robot arm, so as to facilitate the welding operation of the welding robot arm.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a welding tool for the end of the inner tank of a water heater, comprising a bracket, a flip workbench, and a first inner tank end workpiece fixture, wherein the flip workbench is rotatably connected to the bracket, and the first inner tank end workpiece fixture is fixedly connected to the flip workbench.

[0008] The workpiece at the end of the water heater tank is clamped by the first workpiece fixture, and the angle of the workpiece at the end of the water heater tank relative to the horizontal plane is adjusted by the rotation of the flip table relative to the horizontal plane, so as to cooperate with the welding work of the welding robot arm located on one side of the flip table.

[0009] Optionally, the first inner liner end workpiece fixture includes a work table, a first part fixture and a pressing fixture, the first part fixture and the pressing fixture are both fixedly mounted on the work table, the first part fixture has a clamping area for placing parts to be welded, the first part fixture is provided with an arcuate surface corresponding to the curvature of the outer surface of the inner liner end workpiece, and a first processing area for placing the inner liner end workpiece is provided below the pressing position of the pressing fixture, and the arcuate surface is arranged at the first processing area.

[0010] In this solution, the outer side of the workpiece at the end of the inner tank of the water heater is positioned by the arc surface on the first part fixture, and after positioning, the workpiece is pressed against the first part fixture by the pressing fixture. A positioning block corresponding to the groove on the inner wall of the workpiece is provided at the end of the pressing fixture to ensure that the workpiece can be pressed against the first part fixture in a specified posture after the pressing fixture is pressed down.

[0011] Optionally, the first part fixture includes a fixed block, a movable block and a pressure cylinder, the supporting area is located between the fixed block and the movable block, the arc surface is located on the fixed block, the fixed end of the pressure cylinder is fixedly connected to the work table, and the movable end of the pressure cylinder is fixedly connected to the movable block.

[0012] The design of the fixing block not only serves to clamp the parts, but also can position the workpiece at the end of the water heater tank through the arc surface thereon.

[0013] Optionally, a first V-shaped groove is provided on one end of the fixed block near the moving block, and a second V-shaped groove is provided on one end of the moving block near the fixed block.

[0014] Optionally, a welding robot arm is provided at one side of the flip workbench.

[0015] Optionally, a lifting shade curtain is provided between the welding robot arm and the flip workbench.

[0016] Optionally, a fixed workbench is further provided within the working range of the welding robot arm, and a second liner end workpiece fixture is provided on the fixed workbench.

[0017] Optionally, the second inner tank end workpiece fixture includes a lower positioning column and an upper part positioning fixture, the shape of the lower positioning column corresponds to the shape of the inner side of the water heater inner tank end workpiece, the upper part positioning fixture includes a center column and several rotating columns, the position of the center column corresponds to the position of the lower positioning column, one end of the rotating column is rotatably connected to the center column, the rotating column rotates on a horizontal plane, and the other end of the rotating column is provided with a positioning hole for placing the cylindrical part to be welded.

[0018] The design of the second inner tank end workpiece fixture can be used for welding the concentrically designed mounting holes on the workpiece and the corresponding parts. When in use, the rotating column needs to be rotated to the designed angle, and then the workpiece at the end of the water heater inner tank is placed on the lower positioning column, at this time, the outer side of the workpiece at the end of the water heater inner tank is facing upward. The part is inserted from the positioning hole, and its lower end is fitted with the outer side of the workpiece at the end of the water heater inner tank, and finally the welding operation is performed manually or by a welding robot.

[0019] The beneficial technical effects of the utility model are as follows: through the design of the flip workbench, the angle of the end of the inner tank of the water heater relative to the horizontal plane is rotated in coordination with the motion parameters of the robot arm, so as to facilitate the welding operation of the welding robot arm; through the design of the first part fixture, the workpiece can be clamped and the inner side is facing upward to facilitate the welding operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the structure of the workpiece fixture at the end of the first inner liner of the utility model;

[0022] Figure 3 This is a schematic diagram of the structure of the workpiece fixture at the end of the second inner liner of the utility model;

[0023] Figure 4 It is a structural schematic diagram of the workpiece at the end of the inner tank of the water heater of the utility model.

[0024] Figure markings: 1-bracket, 2-turning workbench, 3-first inner tank end workpiece fixture, 4-welding robotic arm, 5-lifting blackout curtain, 6-working table, 7-first part fixture, 8-pressing fixture, 9-fixed block, 10-moving block, 11-pressure cylinder, 12-water heater inner tank end workpiece, 13-lower positioning column, 14-center column, 15-rotating column, 16-arc surface, 17-center depression, 18-second inner tank end workpiece fixture. DETAILED DESCRIPTION

[0025] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. The same parts are represented by the same reference numerals. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the accompanying drawings, and the words "bottom surface" and "top surface", "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0026] Reference Figure 1 As shown, a welding tool for the end of the inner tank of a water heater comprises a bracket 1, a turning workbench 2, and a first inner tank end workpiece fixture 3. The turning workbench 2 is rotatably connected to the bracket 1, and the first inner tank end workpiece fixture 3 is fixedly connected to the turning workbench 2. A welding mechanical arm 4 is arranged at one side of the turning workbench 2. A lifting shade curtain 5 is also arranged between the welding mechanical arm 4 and the turning workbench 2.

[0027] Reference Figure 2 As shown, the first liner end workpiece fixture 3 includes a work table 6, a first part fixture 7 and a pressing fixture 8. The first part fixture 7 and the pressing fixture 8 are both fixedly mounted on the work table 6. The first part fixture 7 has a clamping area for placing the parts to be welded. The first part fixture 7 is provided with an arc surface 16 corresponding to the curvature of the outer surface of the liner end workpiece. A first processing area for placing the liner end workpiece is provided below the pressing position of the pressing fixture 8, and the arc surface 16 is arranged in the first processing area.

[0028] The first part fixture 7 includes a fixed block 9, a moving block 10 and a pressure cylinder 11, the holding area is located between the fixed block 9 and the moving block 10, the arc surface 16 is located on the fixed block 9, the fixed end of the pressure cylinder 11 is fixedly connected to the work table 6, and the moving end of the pressure cylinder 11 is fixedly connected to the moving block 10. A first V-shaped groove is provided on one end of the fixed block 9 close to the moving block 10, and a second V-shaped groove is provided on one end of the moving block 10 close to the fixed block 9.

[0029] Reference Figure 3 As shown, the second inner tank end workpiece fixture 18 includes a lower positioning column 13 and an upper part positioning fixture. The shape of the lower positioning column 13 corresponds to the inner shape of the water heater inner tank end workpiece 12. The upper part positioning fixture includes a center column 14 and a plurality of rotating columns 15. The position of the center column 14 corresponds to the position of the lower positioning column 13. One end of the rotating column 15 is rotatably connected to the center column 14. The rotating column 15 rotates on a horizontal plane. The other end of the rotating column 15 is provided with a positioning hole for placing the cylindrical part to be welded.

[0030] Reference Figure 4 As shown, the top view of the workpiece 12 at the end of the inner tank of the water heater is shown in the figure, and there is a central depression 17 corresponding to the pressing fixture 13 at its center. .

[0031] When in use, the workpiece 12 at the end of the water heater tank is clamped by the first workpiece fixture 3, and the angle of the workpiece 12 at the end of the water heater tank relative to the horizontal plane is adjusted by the rotation of the flip table 2 relative to the horizontal plane, so as to cooperate with the welding work of the welding robot arm located on one side of the flip table 2.

[0032] In this solution, the outer side of the workpiece 12 at the end of the inner tank of the water heater is positioned by the arc surface 16 on the first part fixture 7, and after positioning, the workpiece is pressed against the first part fixture 7 by the pressing fixture 8. A positioning block corresponding to the groove on the inner wall of the workpiece is provided at the end of the pressing fixture 8 to ensure that after the pressing fixture 8 is pressed down, the workpiece can be pressed against the first part fixture 7 in a specified posture.

[0033] The design of the fixing block 9 not only serves to clamp the parts, but also can position the workpiece 12 at the end of the water heater tank through the arc surface 16 thereon.

[0034] After the welding operation is completed at the first inner liner end workpiece fixture 3, the workpiece is manually transferred to the second inner liner end workpiece fixture for the next welding operation.

[0035] The design of the second inner tank end workpiece fixture can be used for welding the concentrically designed mounting holes on the workpiece and the corresponding parts. When in use, the rotating column 15 needs to be rotated to the designed angle, and then the workpiece 12 at the end of the water heater inner tank is placed on the lower positioning column 13, at this time, the outer side of the workpiece 12 at the end of the water heater inner tank faces upward. The parts are placed through the positioning hole, and the lower end is fitted with the outer side of the workpiece 12 at the end of the water heater inner tank, and finally the welding operation is performed manually or by a welding robot.

[0036] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A welding tool for the end of the inner tank of a water heater, characterized in that: It comprises a support, a turnover workbench and a first inner liner end workpiece fixture. The turnover workbench is rotatably connected to the support, and the first inner liner end workpiece fixture is fixedly connected to the turnover workbench.

2. A water heater inner tank end welding tool according to claim 1, characterized in that: The first inner liner end workpiece fixture comprises a work surface, a first part fixture and a pressing fixture. The first part fixture and the pressing fixture are both fixedly mounted on the work surface. The first part fixture has a clamping area for placing parts to be welded. The first part fixture is provided with an arc surface corresponding to the curvature of the outer surface of the inner liner end workpiece. A first processing area for placing the inner liner end workpiece is provided below the pressing position of the pressing fixture, and the arc surface is arranged at the first processing area.

3. A welding tool for the end of the inner tank of a water heater according to claim 2, characterized in that: The first part fixture includes a fixed block, a moving block and a pressure cylinder, the clamping area is located between the fixed block and the moving block, the arc surface is located on the fixed block, the fixed end of the pressure cylinder is fixedly connected to the work table, and the moving end of the pressure cylinder is fixedly connected to the moving block.

4. A water heater inner tank end welding tool as claimed in claim 3, characterized in that: A first V-shaped groove is arranged on one end of the fixed block near the moving block, and a second V-shaped groove is arranged on one end of the moving block near the fixed block.

5. A welding tool for the end of the inner tank of a water heater according to any one of claims 1 to 4, characterized in that: A welding mechanical arm is arranged on one side of the turning workbench.

6. A water heater inner tank end welding tool as claimed in claim 5, characterized in that: A lifting shade curtain is also provided between the welding mechanical arm and the turning workbench.

7. A water heater inner tank end welding tool as claimed in claim 5, characterized in that: A fixed workbench is also provided within the working range of the welding robot arm, and a second inner liner end workpiece fixture is provided on the fixed workbench.

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