Thermally welded edge type metal mesh

Abstract

The utility model relates to a small filter screen, especially relates to a hot welding edge type metal screen, which comprises a welding area and a main body area, the welding area is closed annular, the welding area has taper, the main body area is located in the surrounding of the welding area, the thickness of the main body area is greater than the thickness of the welding area, the welding area and the main body area are provided with mesh, and the welding equipment carries out resistance welding to the screen to form the welding area, the welding area guarantees that the screen does not break, and the process is simplified, punching and stretching forming are carried out simultaneously, the welding area forms taper, and the filtering area of the main body area is increased under the condition that the cross-sectional area is unchanged.

Description

Technical Field

[0001] This utility model relates to small filter screens, and more particularly to hot-welded edge-sealed metal mesh sheets. Background Technology

[0002] After the filter screen is punched and formed, there is a problem of filament shedding. The pore size of the filament shedding area increases, and the filtration accuracy drops sharply. The free filaments that break off are washed away by the fluid and become hard foreign objects. Existing filter screens use sintering to allow the originally loose warp and weft fibers to diffuse at the intersection point at the atomic level to form an integral porous material. This requires high temperature, high pressure, vacuum or protective atmosphere, and the process environment has high requirements. Utility Model Content

[0003] In view of the technical problems existing in the background art, the present invention aims to provide a hot-welded edge-sealed metal mesh, which forms a welding area through resistance welding. The mesh wires in the welding area are reliably connected and will not fall off, thus simplifying the process.

[0004] To solve the above technical problems, the present invention adopts the following technical solution: the hot-welded edge-sealing metal mesh includes a welding area and a main body area. The welding area is a closed ring and has a taper. The main body area is located within the welding area. The thickness of the main body area is greater than the thickness of the welding area. The welding area and the main body area are provided with mesh holes.

[0005] In this scheme, the welding equipment performs resistance welding on the mesh to form a welding area. The welding area ensures that the mesh does not detach. The welding area forms a taper, which increases the filtration area of ​​the main body area without changing the cross-sectional area.

[0006] Preferably, the outer edge of the welding area is formed by punching, and the welding area has a taper.

[0007] In this scheme, punching and stretching are performed simultaneously.

[0008] Preferably, the welding area has mesh holes of different sizes.

[0009] In this scheme, the mesh size of the welded area changes after resistance welding.

[0010] Preferably, the overall diameter formed by the welding area and the main body area is less than 50 mm, and the overall material formed by the welding area and the main body area is stainless steel.

[0011] In this scheme, the mesh is a small filter screen, which requires the use of a small welding wheel. During welding, the mesh needs to move in a synchronous circular motion.

[0012] Preferably, it also includes a peripheral region, which is a closed ring shape, and the welding area is located within the perimeter of the peripheral region. The width of the peripheral region is no more than 0.5 mm, and the width of the welding area is 2.5-5.5 mm.

[0013] In this scheme, the outer area is cut off as waste during punching.

[0014] Preferably, the inner edge of the welding area is circular.

[0015] In this scheme, the welding area is formed by straight welding or roll welding.

[0016] The beneficial effects of this utility model are as follows: the welding equipment performs resistance welding on the mesh to form a welding area, which ensures that the mesh does not detach and simplifies the process; the punching and stretching process simultaneously creates a tapered weld area, increasing the filtration area of ​​the main body without changing the cross-sectional area. Therefore, this utility model has substantial features and progress compared with the prior art. Attached Figure Description

[0017] The following description, in conjunction with the accompanying drawings, details the embodiments and working principles of this utility model.

[0018] Figure 1 This is a schematic diagram of the structure of this utility model.

[0019] Figure 2 This is a side view of the present invention.

[0020] In the diagram: 1. Welding area; 2. Main body area. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the implementation of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0022] In the description of this application, it should be understood that the terms "upper" and "lower" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0023] In the description of this application, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated.

[0024] See appendix Figure 1-2 In this embodiment, the hot-welded edge-sealed metal mesh includes a welding area 1 and a main body area 2. The welding area 1 is a closed ring with a tapered shape. The main body area 2 is located within the welding area 1 and has a thickness greater than that of the welding area 1. The welding area 1 and the main body area 2 are provided with mesh holes. The outer edge of the welding area 1 is formed by punching. The welding area 1 has mesh holes of different sizes. The overall diameter of the welding area 1 and the main body area 2 is less than 50 mm. The overall material of the welding area 1 and the main body area 2 is stainless steel. The inner edge of the welding area 1 is circular.

[0025] In this embodiment, the mesh is resistance welded to form a welding area 1 and a main body area 2. It is punched and stretched to form a tapered shape, so that the welding area 1 and part of the main body area 2 are also tapered. It is then assembled onto the oil pump cover. The overall diameter is less than 50mm, so a small welding wheel is required. The inner edge of the welding area 1 formed by roll welding is circular, or circumferential straight welding can be used. This requires high flatness of the welding equipment as a whole.

[0026] In other alternative implementations, the circumference can be formed by multiple straight-edge welding processes.

[0027] In addition, it also includes an outer perimeter area, which is a closed ring shape. The welding area 1 is located within the outer perimeter area. The width of the outer perimeter area is no more than 0.5 mm, and the width of the welding area 1 is 2.5-5.5 mm.

[0028] In this embodiment, after resistance welding, the main body area 2 and the outer area are separated. During punching, the outer area is cut off as waste.

[0029] The above description represents the preferred embodiment of this utility model. It should be noted that the scope of protection of this utility model is not limited thereto. For those skilled in the art, various improvements, modifications, or equivalent substitutions can be made without departing from the equivalent inventive concept disclosed in this utility model, and these can also be considered as part of the scope of protection of this utility model.

Claims

1. A hot-welded edge-sealed metal mesh, characterized in that: include The welding area (1) is a closed ring and has a tapered shape; The main body region (2) is located within the welding region (1), the thickness of the main body region (2) is greater than the thickness of the welding region (1), and the welding region (1) and the main body region (2) are provided with mesh.

2. The hot-welded edge-sealing metal mesh as described in claim 1, characterized in that: The outer edge of the welding area (1) is formed by punching.

3. The hot-welded edge-sealing metal mesh as described in claim 2, characterized in that: The welding area (1) has mesh holes of different sizes.

4. The hot-welded edge-sealing metal mesh as described in claim 1, characterized in that: The overall diameter of the welded area (1) and the main body area (2) is less than 50 mm, and the overall material of the welded area (1) and the main body area (2) is stainless steel.

5. The hot-welded edge-sealing metal mesh as described in claim 4, characterized in that: It also includes an outer perimeter, which is a closed ring. The welding area (1) is located within the perimeter. The width of the outer perimeter is no more than 0.5 mm, and the width of the welding area (1) is 2.5-5.5 mm.

6. The hot-welded edge-sealing metal mesh as described in claim 1, characterized in that: The inner edge of the welding area (1) is circular.

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