Welding device for sheet filter

Abstract

The utility model discloses a welding device of a sheet filter. According to the technical scheme, the welding device comprises a working platform and a welding gun, two chucks used for clamping a filter are installed on the working platform, gas pipes used for injecting inert gas are arranged in the chucks, when the two chucks clamp the filter, the welding gun is located over a welding seam of the filter, and an observation cover is placed between the chucks and the welding gun. The welding device has the advantages that the air holes are formed in the chuck, inert gas is introduced into the filter in the welding process to remove oxygen, and then the effect of preventing the welding seam from being oxidized can be achieved, so that the welding seam can present the natural metal color without subsequent grinding and polishing, the working procedures are saved, and the welding efficiency is improved. And the damage to the welding strength in the polishing process can be avoided to a certain extent, and the welding firmness is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of welding equipment technology, and in particular to a welding device for a plate filter. Background Technology

[0002] Plate filters generally consist of a frame and filter layers, which are fixed together by welding.

[0003] The welding methods in the existing technology generally involve directly applying the welding torch to the welding area, which easily leads to obvious oxidation marks at the weld, requiring grinding before it can be used.

[0004] Therefore, a new solution is needed to address the above problems. Summary of the Invention

[0005] The technical problem to be solved by this utility model is that the weld joints of existing welding methods have oxidation marks and need to be polished before use. This utility model provides a welding device for a plate filter that can prevent oxidation at the weld joints.

[0006] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: a welding device for a plate filter, including a working platform and a welding torch. Two clamping plates for holding the filter are installed on the working platform. A gas pipe for injecting inert gas is provided in the clamping plate. When the two clamping plates hold the filter, the welding torch is located directly above the weld seam of the filter, and an observation cover is placed between the clamping plate and the welding torch.

[0007] Furthermore, one of the clamps is a driven clamp and is fixed to the working platform, while the other clamp is an active clamp and slides on the working platform. The active clamp rotates and drives the driven clamp to rotate synchronously.

[0008] Furthermore, a hydraulic cylinder is fixed on the working platform, and a motor base is fixed on the output shaft of the hydraulic cylinder. The bottom of the motor base slides on the working platform via a slide rail, and a motor that is fixed to the chuck and used to drive the chuck to rotate is installed inside the motor base.

[0009] Furthermore, the chuck includes a three-jaw chuck holding a placement disc for contacting the filter.

[0010] Furthermore, the center of the placement tray is integrally formed with a protrusion for cooperating with the filter, and the protrusion has an air hole that communicates with the air pipe.

[0011] Furthermore, the three-jaw chuck is also equipped with a water pipe for conveying cooling water.

[0012] Furthermore, a lifting column is fixed on the working platform, a translation rod slides on the lifting column, and a cylinder is installed on the lifting column to make the translation rod slide up and down. The welding torch slides horizontally on the translation rod.

[0013] Furthermore, the observation cover has a through hole for the welding torch to pass through, and a filter glass is installed on one side of the observation cover.

[0014] Compared with the prior art, the advantages of this utility model are:

[0015] By creating air holes in the chuck and introducing inert gas into the filter during welding to remove oxygen, oxidation at the weld can be prevented, allowing the weld to exhibit its natural metallic color without the need for subsequent grinding and polishing. This not only saves on steps but also avoids damage to the weld strength caused by grinding, ensuring the weld's firmness. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ;

[0017] Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 ;

[0018] Figure 3 for Figure 2 Enlarged view of point A.

[0019] Attached diagram descriptions: 1. Working platform; 2. Welding torch; 21. Lifting column; 22. Translation rod; 3. Clamping plate; 31. Three-jaw chuck; 32. Placement plate; 321. Protrusion; 322. Air hole; 33. Water pipe; 4. Observation hood; 41. Filter glass; 5. Hydraulic cylinder; 6. Motor base; 7. Slide rail. Detailed Implementation

[0020] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0021] like Figures 1 to 3As shown, a welding device for a sheet filter includes a work platform 1 and a welding torch 2. Two clamping plates 3 are installed on the work platform 1 to hold the filter. When the filter is held by the two clamping plates 3, the welding torch 2 is positioned directly above the filter weld. A gas pipe for injecting inert gas is provided inside the clamping plates 3. The clamping plates 3 hold the filter, thus providing initial fixation between the layers, facilitating subsequent welding work. Nitrogen gas is preferably used as the inert gas to purge oxygen from inside the filter, preventing oxidation of the weld joint during welding and achieving a metallic weld finish. This eliminates the need for subsequent finishing processes. Grinding and polishing not only save processes and reduce costs, but also reduce damage to the weld during grinding, ensuring welding strength. An observation cover 4 is placed between the chuck 3 and the welding torch 2. The observation cover 4 has a through hole for the welding torch 2 to pass through. A filter glass is installed on one side of the observation cover 4. The observation cover 4 can not only filter the strong light emitted by the weld point during the welding process to protect the operator's eyes, but also provide a certain degree of sealing for the weld point, thereby ensuring that the welding area is in a low oxygen content and ensuring the welding effect. At the same time, the welding torch 2 preferably uses laser welding, which can beautify the weld after welding and improve the standardization of the finished filter.

[0022] One of the chucks 3 is a driven chuck and is fixed to the working platform 1, while the other chuck 3 is an active chuck and slides on the working platform 1. The active chuck rotates and drives the driven chuck to rotate synchronously. The active chuck rotates at a certain speed, thereby realizing the complete welding process of the welding torch 2 on the edge of the filter. The specific structure is as follows: a hydraulic cylinder 5 is also fixed on the working platform, and a motor base 6 is fixed on the output shaft of the hydraulic cylinder 5. The bottom of the motor base 6 slides on the working platform 1 through a slide rail 7. A motor is installed inside the motor base 6 and is fixed to the chuck 3 for driving the chuck 3 to rotate.

[0023] The chuck 3 includes a three-jaw chuck 31, which holds a placement plate 32. The placement plate 32 is used to contact the filter. The shape of the placement plate 32 matches the shape of the filter. When the two placement plates 32 clamp the filter, only the part of the filter that needs to be welded is exposed, which can ensure that the chuck 3 has a more solid initial fixing effect on the filter. The center of the placement plate 32 is integrally formed with a protrusion 321 for cooperating with the filter. The protrusion 321 has an air hole 322 connected to the air pipe. Since the plate filter is annular, the protrusion 321 can perfectly fit with the filter. The feed inlet of the plate filter is located on the inner ring wall, so that inert gas can enter the filter and escape outward, so that a large amount of inert gas exists at the weld of the plate filter, thereby achieving the effect of removing oxygen. The three-jaw chuck 31 is also provided with a water pipe 33 for conveying cooling water. The water pipe 33 is used to cool the filter itself to prevent the filter from deforming due to the heat generated during the welding process, thus ensuring the yield of the filter.

[0024] A lifting column 21 is fixed on the working platform 1, and a translation rod 22 slides on the lifting column 21. A cylinder is installed on the lifting column 21 to make the translation rod 22 slide up and down. The welding torch 2 slides horizontally on the translation rod 22. This setting allows the position of the welding torch 2 to be flexibly adjusted according to the actual situation, and thus it can be used to weld filters of different specifications.

[0025] The scope of protection of this utility model includes, but is not limited to, the above embodiments. The scope of protection of this utility model is defined by the claims. Any substitutions, modifications, or improvements to this technology that are easily conceived by those skilled in the art shall fall within the scope of protection of this utility model.

Claims

1. A welding apparatus for a plate filter, comprising a work platform (1) and a welding torch (2), characterized in that: The work platform (1) is equipped with two clamping plates (3) for holding the filter. The clamping plates (3) are provided with gas pipes for injecting inert gas. When the two clamping plates (3) hold the filter, the welding torch (2) is located directly above the filter weld, and an observation cover (4) is placed between the clamping plates (3) and the welding torch (2).

2. The welding apparatus for a plate filter as described in claim 1, characterized in that: One of the clamps (3) is a driven clamp and is fixed to the working platform (1), and the other clamp (3) is an active clamp and slides on the working platform (1). The active clamp rotates and drives the driven clamp to rotate synchronously.

3. The welding apparatus for a plate filter as described in claim 2, characterized in that: The working platform (1) is still fixed with a hydraulic cylinder (5), and a motor base (6) is fixed on the output shaft of the hydraulic cylinder (5). The bottom of the motor base (6) slides on the working platform (1) via a slide rail (7). A motor is installed inside the motor base (6) that is fixed to the chuck (3) and is used to drive the chuck (3) to rotate.

4. The welding apparatus for a plate filter as described in claim 2, characterized in that: The chuck (3) includes a three-jaw chuck (31) on which a placement disc (32) is held, the placement disc (32) being used to contact the filter.

5. The welding apparatus for a plate filter as described in claim 4, characterized in that: The center of the placement tray (32) is integrally formed with a protrusion (321) for cooperating with the filter, and an air hole (322) communicating with the air pipe is opened in the protrusion (321).

6. The welding apparatus for a plate filter as described in claim 5, characterized in that: The three-jaw chuck (31) is also equipped with a water pipe (33) for conveying cooling water.

7. The welding apparatus for a plate filter as described in claim 1, characterized in that: A lifting column (21) is fixed on the working platform (1), and a translation rod (22) slides on the lifting column (21). A cylinder for sliding the translation rod (22) up and down is installed on the lifting column (21), and the welding torch slides horizontally on the translation rod (22).

8. The welding apparatus for a plate filter as described in claim 1, characterized in that: The observation cover (4) has a through hole for the welding torch (2) to pass through, and a filter glass (41) is installed on one side of the observation cover (4).

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