Welding equipment for inner container water pipe of water heater

Abstract

The utility model discloses water heater liner water pipe welding equipment, and relates to the technical field of liner processing and manufacturing, the water heater liner water pipe welding equipment comprises a jacking positioning assembly, a welding position and a pre-storage position, the welding position and the pre-storage position are sequentially arranged in the liner conveying direction, a translation seat for conveying a liner is slidably arranged between the welding position and the pre-storage position, and a welding manipulator is arranged at the side part of the welding position; a supporting table and a jacking positioning assembly are arranged on the welding position, a lifting obstacle avoiding assembly acting on the bottom of the inner container is vertically arranged at the top of the translation base, the supporting table is composed of arc-shaped limiting tables on the two sides in a concentric mode, and the jacking positioning assembly comprises a second air cylinder and a connecting plug arranged at the end of the second air cylinder; the device has the technical advantages that by arranging the lifting obstacle avoidance assembly capable of ascending and descending and the translation base driven by the air cylinder, batch obstacle avoidance displacement of the inner container between the welding position and the pre-storage position is achieved; and the two arc-shaped limiting tables are used for limiting the bottom of the inner container, the inserting head in the jacking positioning assembly upwards penetrates out of the inner container and is inserted into the water pipe, and then the welding quality of a follow-up welding mechanical arm is improved.

Description

Technical Field

[0001] This application relates to the field of inner tank processing and manufacturing technology, and in particular to welding equipment for water pipes in water heater inner tanks. Background Technology

[0002] As a core component of water heaters, the inner tank directly affects the safety, performance, and lifespan of the water heater. Since the first fully automatic storage electric water heater was introduced in 1889, the production technology of water heater inner tanks has undergone over a century of development, with significant advancements in materials and processes. Early inner tanks were primarily made of cast iron, but this material was prone to corrosion and had poor heat retention. Subsequently, stainless steel inner tanks became increasingly popular, widely recognized for their resistance to rust and corrosion and long service life. However, stainless steel inner tanks did not provide ideal heat retention and were prone to scaling, making cleaning difficult. To address these issues, enamel-lined inner tanks were developed. Enameled inner tanks are made by applying enamel glaze to the surface of thickened steel plates, allowing them to withstand a wide range of temperature changes. They also possess excellent physical properties such as compressive strength, tensile strength, and electrical insulation, as well as chemical properties such as resistance to acids, alkalis, high temperatures, and water vapor. These properties enable enamel-lined inner tanks to effectively prevent water contamination and extend their service life to over 15 years. Currently, enamel liners have become the mainstream product in the market, and various formulas and colors such as blue enamel, gold enamel, brown gold, and titanium gold have been developed.

[0003] In the manufacturing process of the water heater's inner tank, a crucial step is the precise welding of the water pipes to the inner tank. Traditionally, this step mainly relies on manual welding. However, this method is not only difficult to guarantee welding accuracy and inefficient, but also unsuitable for large-scale production. Although some machine welding equipment has been put into use on the market, it often fails to achieve assembly-line batch welding operations, thus limiting further improvements in production efficiency. A core challenge in machine welding is the precise positioning of the water pipes. To ensure welding quality, the water pipes must be accurately placed in the designated positions on the inner tank. Without the assistance of appropriate positioning structures, the water pipes are prone to shifting on the surface of the inner tank. Even a slight displacement can lead to welding failure, thereby affecting the performance and safety of the entire water heater. Summary of the Invention

[0004] This device provides welding equipment for the water pipes inside a water heater tank, and the specific implementation method is as follows:

[0005] Equipment for welding water pipes inside water heater tanks, including:

[0006] Welding positions and pre-storage positions are arranged sequentially along the inner liner conveying direction, and a translation seat for transporting the inner liner is slidably provided between the two. A welding robot is provided on the side of the welding position.

[0007] A support platform is set on the welding position. The top of the translation seat is vertically equipped with a lifting and obstacle avoidance component that acts on the bottom of the inner liner. The support platform is composed of two arc-shaped limiting platforms on both sides with the same center. The top of the two arc-shaped limiting platforms is used to support the bottom of the inner liner in the welding state. There is a gap between the two arc-shaped limiting platforms for the lifting and obstacle avoidance component to pass through.

[0008] The welding position is also equipped with a lifting and positioning assembly, which includes a second cylinder and a connector located at the end of the second cylinder. The connector corresponds to the inner diameter of the water pipe. The connector extends vertically through the through hole of the inner liner. The water pipe is inserted into the through part of the connector, and its end abuts against the top of the inner liner. The water pipe to be welded is stably installed on the inner liner through the connector.

[0009] Based on the above technical solution, the distance between the two arc-shaped limiting platforms is less than the diameter of the inner liner. By setting up a liftable obstacle avoidance component and a cylinder-driven translation seat, the inner liner can achieve batch obstacle avoidance displacement between the welding position and the pre-stored position. The two arc-shaped limiting platforms are used to limit the bottom of the inner liner. The connector in the lifting positioning component passes upward through the inner liner and is inserted into the water pipe, which realizes a stable connection between the inner liner and the water pipe before welding, thereby improving the welding quality of the subsequent welding robot.

[0010] By introducing a liftable obstacle avoidance component and a cylinder-driven translation seat design, efficient and batch obstacle avoidance movement of the inner tank between the welding station and the pre-stored position is achieved; the two arc-shaped limiting platforms are concentric and can limit and fix the bottom of the inner tank; the connector in the lifting and positioning component can penetrate the inner tank upward and firmly connect to the water pipe, ensuring a stable connection between the inner tank and the water pipe before welding, thereby significantly improving the working accuracy and welding quality of the subsequent welding robot.

[0011] Preferably, it also includes a frame for accommodating the welding position and the pre-storage position, with a cylinder structure horizontally mounted on the frame, the arm of the cylinder structure being connected to the translation seat.

[0012] Preferably, the lifting obstacle avoidance assembly includes a vertically arranged first cylinder, the arm end of the first cylinder is connected to a positioning head, and the top of the positioning head is provided with a positioning protrusion for limiting the position by being inserted into the top hole of the inner liner.

[0013] Based on the above technical solution, with the help of the cylinder structure, the retraction action of the air arm causes the translation seat to move smoothly and efficiently between the welding position and the pre-stored position. Through the lifting function of the air arm of the first cylinder, the inner liner can smoothly perform displacement operations on the support platform of the welding position and the pre-stored position.

[0014] Preferably, a pair of support platforms are arranged at the welding position and the pre-storage position respectively, and two horizontal translation seats are arranged and connected by a connecting rod.

[0015] Based on the above technical solution, by setting up a pair of translation seats, the simultaneous installation of water pipes and simultaneous welding operations in the inner liner at two workstations were realized.

[0016] Preferably, a number of arc-shaped inner protrusions are coaxially arranged above the arc-shaped limiting platform, and the diameter of the arc-shaped inner protrusions decreases sequentially from bottom to top.

[0017] Preferably, a vertical through hole is provided on the arc-shaped limiting platform, and the second cylinder is arranged below the arc-shaped limiting platform, with the vertical through hole corresponding vertically to the connector.

[0018] Based on the above technical solutions, by setting arc-shaped inner protrusions with progressively decreasing diameters on the arc-shaped limiting platform, positioning of inner tanks of different diameters can be achieved, thereby improving the compatibility of automated welding water pipe operations for different models of inner tanks.

[0019] Preferably, proximity switches are provided above the frame, at the welding position, and at the pre-storage position.

[0020] Preferably, the side of the welding position furthest from the welding robot is designated as a manual water pipe installation position, and a grating is provided at the water pipe installation position.

[0021] Based on the above technical solutions, the detection performance of the equipment has been significantly improved by installing proximity switches and grating sensors, thereby further enhancing the stability of automatic welding. The welding robot will only start working when the grating sensor confirms that there are no personnel in the working area. This design effectively avoids possible harm to the human body during the welding process and ensures the safety of operation.

[0022] In summary, this application includes the following beneficial technical effects:

[0023] 1. This utility model achieves batch obstacle avoidance displacement of the inner liner between the welding position and the pre-storage position by setting up a liftable lifting obstacle avoidance component and a cylinder-driven translation seat; two arc-shaped limiting platforms are used to limit the bottom of the inner liner, and the plug in the lifting positioning component passes upward through the inner liner and is inserted into the water pipe, realizing a stable connection between the inner liner and the water pipe before welding, thereby improving the welding quality of the subsequent welding robot.

[0024] 2. This utility model realizes the reciprocating movement of the translation seat between the welding position and the pre-storage position by the retraction of the air arm of the cylinder structure, and realizes the displacement of the inner liner on the support platform between the welding position and the pre-storage position by the lifting and lowering of the air arm of the first cylinder.

[0025] 3. This utility model has a simple structure. By setting arc-shaped inner protrusions with successively decreasing diameters on the arc-shaped limiting platform, it can achieve the positioning of inner liner of different diameters, thereby improving the compatibility of automated welding water pipe operations for different models of inner liner. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the exploded structure of the inner tank and water pipes;

[0027] Figure 2 This is a side view of the structure of this utility model. Figure 1 ;

[0028] Figure 3 This is a side view of the structure of this utility model. Figure 2 ;

[0029] Figure 4 This is a schematic diagram of the translation seat in this utility model;

[0030] Figure 5 This is a schematic diagram of the pre-stored position structure in this utility model;

[0031] Figure 6 This is a schematic diagram of the lifting and positioning component in this utility model. Figure 1 ;

[0032] Figure 7 This is a schematic diagram of the lifting and positioning component in this utility model. Figure 2 .

[0033] Explanation of reference numerals in the attached figures:

[0034] 1. Frame, 2. Translation seat, 3. Welding position, 4. Support platform, 5. Lifting and obstacle avoidance assembly, 6. Linkage rod, 7. Lifting and positioning assembly, 8. Proximity switch, 9. Light grating, 11. Inner liner, 12. Welding robot, 13. Water pipe, 14. Pre-stored position.

[0035] 401. Arc-shaped limiting platform; 402. Arc-shaped inner protrusion; 403. Vertical through hole; 501. First cylinder; 502. Positioning head; 701. Second cylinder; 702. Connector. Detailed Implementation

[0036] The specific embodiments of this utility model are described below with reference to the accompanying drawings and examples:

[0037] It should be noted that the structures, proportions, sizes, etc. shown in the accompanying drawings are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which the present invention can be implemented. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and purposes that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0038] Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in this specification are only for clarity of description and are not intended to limit the scope of implementation of this utility model. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered as within the scope of implementation of this utility model.

[0039] The following is in conjunction with the appendix Figure 1-7 This application will be described in further detail.

[0040] This application discloses an equipment for welding water pipes inside a water heater.

[0041] Example 1

[0042] Reference Figures 1 to 3 This embodiment discloses a welding device for the inner tank pipe of a water heater, including a welding position 3, a pre-storage position 14 arranged sequentially along the conveying direction of the inner tank 11, and a frame 1 for placing the welding position 3 and the pre-storage position 14. The welding position 3 is provided with a support platform 4 and a lifting and positioning component 7, and a translation seat 2 for transporting the inner tank 11 is slidably provided between the welding position 3 and the pre-storage position 14. A welding robot 12 is provided on the side of the welding position 3. A lifting and obstacle avoidance component 5 acting on the bottom of the inner tank 11 is vertically provided on the top of the translation seat 2. The support platform 4 is composed of two arc-shaped limiting platforms 401 on both sides with the same center. The top of the two arc-shaped limiting platforms 401 is used to support the bottom of the inner tank 11 in the welding state, and a gap is provided between the two arc-shaped limiting platforms 401 for the lifting and obstacle avoidance component 5 to pass through.

[0043] A cylinder structure is horizontally mounted on the frame 1. The cylinder arm is connected to the translation seat 2. In this structure, a pair of support tables 4 are respectively arranged on the welding position 3 and the pre-storage position 14. Two translation seats 2 are horizontally arranged and connected by a connecting rod 6. The parallel arrangement of translation seats 2, welding robot 12 and support tables 4 realizes dual-station welding operation.

[0044] The lifting and positioning assembly 7 includes a second cylinder 701 and a connector 702 located at the end of the second cylinder 701. The connector 702 corresponds to the inner diameter of the water pipe 13. The connector 702 extends vertically through the through hole of the inner liner 11. The water pipe 13 is inserted into the through part of the connector 702, and its end abuts against the top of the inner liner 11. The water pipe 13 to be welded is stably installed on the inner liner 11 through the connector 702. The lifting and obstacle avoidance assembly 5 includes a vertically arranged first cylinder 501. The arm end of the first cylinder 501 is connected to a positioning head 502. The top of the positioning head 502 is provided with a positioning protrusion for limiting the position by inserting into the top hole of the inner liner 11. In this structure, the translation path of the lifting and obstacle avoidance assembly 5 and the lifting and positioning assembly 7 are arranged in a staggered manner.

[0045] A vertical through hole 403 is provided on the arc-shaped limiting platform 401. The second cylinder 701 is arranged below the arc-shaped limiting platform 401, and the vertical through hole 403 corresponds vertically to the connector 702. Several arc-shaped inner protrusions 402 are coaxially arranged above the arc-shaped limiting platform 401. In this structure, the diameter of the arc-shaped inner protrusions 402 decreases from bottom to top, thereby enabling the positioning of inner liner 11 with different diameters and models. Since the hole positions of different inner liners 11 are the same, the position of the lifting positioning component 7 does not need to be adjusted.

[0046] The specific implementation process is as follows: the inner liner 11 is fitted onto the positioning head 502. After the first cylinder 501 retracts its air arm, the inner liner 11 is transferred and clamped onto the two arc-shaped limiting platforms 401. Then, the second cylinder 701 extends its air arm and vertically passes the connector 702 through the welding hole of the inner liner 11. The water pipe 13 is inserted into the top of the connector 702 from the side, and the bottom of the water pipe 13 abuts against the inner liner 11. After the personnel leave, the welding robot 12 performs automatic welding between the water pipe 13 and the inner liner 11. After the welding is completed, the second cylinder 701 retracts its air arm, and the first cylinder 501 extends its air arm to lift the inner liner 11. The cylinder structure of the frame 1 pushes the translation seat 2, the lifting obstacle avoidance component 5 and the inner liner 11 to the pre-storage position 14 and places the inner liner 11 on the arc-shaped limiting platform 401 at the pre-storage position 14 for buffering, to be taken away by the external equipment later.

[0047] Example 2

[0048] Reference Figure 2 Based on the above embodiments, this embodiment also discloses a welding equipment for water pipes in the inner tank of a water heater. A proximity switch 8 is provided above the frame 1, at the welding position 3 and the pre-storage position 14. The side of the welding position 3 away from the welding robot 12 is provided as a manual water pipe 13 installation position, and a grating 9 is provided at the water pipe 13 installation position.

[0049] Many other changes and modifications can be made without departing from the concept and scope of this utility model. It should be understood that this utility model is not limited to the specific embodiments, and the scope of this utility model is defined by the appended claims.

Claims

1. A device for welding a water tube of an inner container of a water heater, characterized in that, The utility model relates to a kind of welding position (3) and prestore position (14) for sequentially arranging along the direction of transport of inner container (11), and slidingly arranged between the two translation seat (2) for transporting the inner container (11), welding position (3) side is equipped with welding manipulator (12). Supporting table (4) is arranged on the welding position (3), and the top of the translation seat (2) is vertically provided with a lifting obstacle avoidance assembly (5) acting on the bottom of the inner container (11), the supporting table (4) is composed of two arc-shaped limiting tables (401) with a common center, the top of the two arc-shaped limiting tables (401) is used to support the bottom of the inner container (11) in the welding state, and a gap is provided between the two arc-shaped limiting tables (401) for the lifting obstacle avoidance assembly (5) to pass through. The welding position (3) is also provided with a jacking positioning assembly (7), which includes a second cylinder (701) and a plug connector (702) arranged at the end of the second cylinder (701), the plug connector (702) corresponds to the inner diameter of the water pipe (13), the plug connector (702) vertically penetrates the through hole of the inner container (11), the water pipe (13) is inserted into the penetrating portion of the plug connector (702), and the end thereof abuts against the top of the inner container (11), and the water pipe (13) to be welded is stably installed on the inner container (11) through the plug connector (702). It also includes a rack (1) for placing the welding position (3) and the prestore position (14), and a cylinder structure is horizontally arranged on the rack (1), and the gas arm of the cylinder is connected to the translation seat (2).

2. The water tube welding device for the inner container of a water heater according to claim 1, wherein, The lifting obstacle avoidance assembly (5) includes a vertically arranged first cylinder (501), and the gas arm of the first cylinder (501) is connected with a positioning head (502), and the top of the positioning head (502) is provided with a positioning protrusion inserted into the top hole of the inner container (11) for limiting.

3. The device for welding water pipe of inner container of water heater according to claim 2, characterized in that, The supporting table (4) is arranged on the welding position (3) and the prestore position (14) respectively, and the translation seat (2) is horizontally provided with two, and is connected by a connecting rod (6).

4. The device for welding water pipe of inner container of water heater according to claim 3, characterized in that, A plurality of arc-shaped inner protrusions (402) are coaxially arranged above the arc-shaped limiting table (401), and the diameters of the arc-shaped inner protrusions (402) decrease from bottom to top.

5. The device for welding water pipe of inner container of water heater according to claim 4, characterized in that, A vertical through hole (403) is formed in the arc-shaped limiting table (401), and the second cylinder (701) is arranged below the arc-shaped limiting table (401), and the vertical through hole (403) vertically corresponds to the plug connector (702).

6. The device for welding water pipe of inner container of water heater according to claim 4, characterized in that, A proximity switch (8) is arranged above the rack (1) at the positions of the welding position (3) and the prestore position (14).

7. The device for welding water pipe of inner container of water heater according to claim 4, characterized in that, The side of the welding position (3) away from the welding manipulator (12) is provided as a water pipe (13) installation position for manual operation, and a grating (9) is arranged at the water pipe (13) installation position.

8. The device for welding water pipe of inner container of water heater according to claim 1, characterized in that, ​

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