Sealing ring welding tool structure

Abstract

The utility model relates to a tool structure. A sealing ring welding tool structure comprises a first rotary welding die, a movable second rotary welding die is arranged on the first rotary welding die, a sealing ring mounting groove is formed between the first rotary welding die and the second rotary welding die, a pressing plate is arranged above the sealing ring mounting groove, the pressing plate is fixed to the first rotary welding die, and the first rotary welding die is fixed to the second rotary welding die. The press-fitting face of the pressing plate is located on the surface of the sealing ring to be welded. A gap is reserved between the groove wall, located on one side of the second rotary welding die, of the sealing ring installation groove and the press-fitting face of the pressing plate, and a landing edge positioning groove is formed in the outer circumferential surface, facing one side of the sealing ring installation groove, of the second rotary welding die. The utility model provides a sealing ring welding tool structure which is simple in structure, convenient to weld, good in positioning effect on an upper sealing ring and a lower sealing ring and high in production efficiency. The technical problem that a special sealing ring structure cannot be welded in the prior art is solved.

Description

Technical Field

[0001] This utility model relates to a tooling structure, and more particularly to a sealing ring welding tooling structure. Background Technology

[0002] The existing structure used for sealing high-temperature rotating and moving components such as the rotating and moving ball bearings in the brake ball bearing pressurization mechanism employs a combination of asbestos twisted rope and thick coating seal. This design suffers from problems such as poor assembly process stability, unstable sealing performance, and unstable frictional resistance in the ball bearing pressurization support, and it cannot achieve a gapless seal. Therefore, a sealing ring adapted to these requirements has been developed. This sealing ring consists of two layers, and the outer circumferential surfaces of the two layers need to be connected and fixed by overlapping. This necessitates the design of a special sealing ring welding fixture. Summary of the Invention

[0003] This utility model provides a sealing ring welding fixture structure that is simple in structure, easy to weld, has a good positioning effect on the upper and lower sealing rings, and has high production efficiency; it solves the technical problem that welding of special sealing ring structures is impossible in the prior art.

[0004] The above-mentioned technical problem of this utility model is solved by the following technical solution: a sealing ring welding fixture structure, including a first rotary welding mold, a movable second rotary welding mold on the first rotary welding mold, a sealing ring mounting groove formed between the first rotary welding mold and the second rotary welding mold, a pressure plate provided above the sealing ring mounting groove, the pressure plate being fixed on the first rotary welding mold, and the pressing surface of the pressure plate being located on the surface of the sealing ring to be welded; a gap is left between the groove wall of the sealing ring mounting groove on one side of the second rotary welding mold and the pressing surface of the pressure plate, and an overlap positioning groove is provided on the outer circumferential surface of the second rotary welding mold facing the sealing ring mounting groove. The sealing ring consists of an upper sealing ring and a lower sealing ring. Both upper and lower sealing rings are placed in the sealing ring mounting groove, and then the sealing ring is pressed into the mounting groove by a pressure plate. Simultaneously, the side of the second rotary welding mold is used to position the overlap. One end of the overlap is first laser-welded to the upper sealing ring through a gap. Then, the upper and lower sealing rings are swapped, and laser welding is performed again through a gap to complete the welding of the other end of the overlap to the lower sealing ring, thus forming the complete sealing ring. Furthermore, the second rotary welding mold is radially adjustable. Adjusting the position of the second rotary welding mold according to the thickness of the sealing ring adjusts the width of the sealing ring mounting groove, resulting in better positioning. The mold can accommodate the installation of both upper and lower sealing rings, while also providing positioning for the side overlap. It has a simple structure and excellent welding effect.

[0005] Preferably, the second rotary welding mold has a split structure, comprising several sector-shaped pieces centered on the axis of the first rotary welding mold. This split structure allows for step-by-step adjustment of the sealing ring's shape, moving each sector-shaped piece to ensure that each piece engages with the inner surface of the sealing ring, achieving optimal positioning and thus guaranteeing the welding effect.

[0006] Preferably, the fan-shaped plate has a waist-shaped hole, and the first rotary welding mold has a bolt hole. The bolts that fix the first and second rotary welding molds pass through the waist-shaped hole and are fixed in the bolt hole. The waist-shaped hole design facilitates adjustment of the radial position of the fan-shaped plate.

[0007] Preferably, the fan-shaped piece has multiple protrusions, and an overlap positioning groove is formed on the outer side of the protrusions. The overlap positioning groove is a V-shaped groove, which is used to cooperate with the protrusions on the overlap to press the overlap against the sealing ring.

[0008] Preferably, the first rotary welding mold is provided with a fixing ring, which has bolt holes for fixing to the pressure plate. A stepped surface is formed on the inner wall of the fixing ring, which serves as part of the sealing ring mounting groove. The stepped surface can position the sealing ring and also position the pressure plate above the first rotary welding mold, facilitating the installation of the pressure plate onto the fixing ring of the first rotary welding mold, and then fixing the first rotary welding mold and the pressure plate with bolts.

[0009] Preferably, the highest surface of the stepped surface is higher than the ring surface of the fixing ring.

[0010] Preferably, the outer circumferential surface of the second rotary welding mold is formed with a stepped positioning surface, which corresponds to the stepped surface on the first rotary welding mold, thereby forming a sealing ring mounting groove.

[0011] Preferably, the bottom surface of the pressure plate is provided with an annular bottom surface corresponding to the first rotary welding mold fixing ring, and a stepped surface is provided on the inner side of the annular bottom surface.

[0012] Preferably, a partition is provided between the upper and lower layers of the sealing ring to be formed, and the width of the partition is the same as the width of the sealing ring mounting groove. This separates the upper and lower sealing rings, making it easier for the pressure plate to tighten.

[0013] Therefore, the sealing ring welding fixture structure of this utility model has the following advantages: the position of the second rotary welding mold is adjusted according to the actual situation of the sealing ring, so as to more reliably position the upper and lower sealing rings to be welded. At the same time, the second rotary welding mold can also be used to position the overlap. Laser welding is used to complete the welding of the overlap to the inner circumferential surface of the sealing ring at the gap, resulting in high welding efficiency and good welding effect. The lower first rotary welding mold positions the second rotary welding mold and the pressure plate. The structure is simple and easy to install and disassemble. Attached Figure Description

[0014] Figure 1 This is a three-dimensional diagram of a sealing ring welding fixture structure.

[0015] Figure 2 yes Figure 1 Cross-sectional view of the product with the sealing ring installed.

[0016] Figure 3 yes Figure 2 Enlarged view of point A in the middle.

[0017] Figure 4 yes Figure 1 A three-dimensional view of the first rotary welding mold.

[0018] Figure 5 yes Figure 1 A three-dimensional view of the sector-shaped piece of the second rotary welding mold.

[0019] Figure 6 yes Figure 1 A 3D view of the inner pressure plate. Detailed Implementation

[0020] The technical solution of the utility model will be further described in detail below through embodiments and in conjunction with the accompanying drawings.

[0021] Example:

[0022] like Figure 1 and 2 As shown in Figure 3, a sealing ring welding fixture structure includes a circular first rotary welding mold 1, a movable second rotary welding mold 2 on the first rotary welding mold 1, a sealing ring mounting groove 17 formed between the first rotary welding mold 1 and the second rotary welding mold 2, an upper sealing ring 5 and a lower sealing ring 6 installed in the sealing ring mounting groove 17, and a partition 8 placed between the upper sealing ring 5 and the lower sealing ring 6, the partition 8 having a width approximately the same as the sealing ring mounting groove 17. A pressure plate 3 is provided above the sealing ring mounting groove 17, and the pressure plate 3 is fixed to the first rotary welding mold 1 by bolts. The sealing ring mounting groove 17 is located on one side of the second rotary welding mold 2, with a gap 4 between the groove wall and the pressing surface of the pressure plate 3. The outer circumferential surface of the second rotary welding mold 2 facing the sealing ring mounting groove is provided with an overlap positioning groove 15. The overlap positioning groove 15 is V-shaped and is used to position the overlap 8. The center of the overlap 8 has an arc-shaped protrusion, which abuts against the overlap positioning groove 15. The two ends of the overlap 8 are respectively welded to the upper sealing ring 5 and the lower sealing ring 6.

[0023] like Figure 4As shown, the first rotary welding mold 1 includes a fixing ring 11. Through holes 18, evenly distributed on the fixing ring 11, are provided for fixing to the pressure plate. A stepped surface 12 is formed on the inner wall of the fixing ring. The stepped surface 12 includes three steps: the first step is used for positioning with the second rotary welding mold; the second step is used to form a sealing ring mounting groove; and the third step is higher than the plane of the fixing ring, forming a positioning surface for the pressure plate between the third step and the fixing ring. Bolt holes 16 for fixing the second rotary welding mold are also formed on the bottom surface of the first rotary welding mold.

[0024] like Figure 5 As shown, the second rotary welding mold consists of three sector-shaped pieces. Each sector-shaped piece has a waist hole 13. After adjusting the radial position of the second rotary welding mold, bolts are inserted into the waist holes and then fixed in the bolt holes 16 on the bottom surface of the first rotary welding mold, thereby fixing the sector-shaped pieces onto the first rotary welding mold 1. Multiple protrusions 14 are formed on the sector-shaped pieces, and overlapping positioning grooves 15 are formed on the outer side of the protrusions.

[0025] like Figure 6 As shown, the pressure plate is annular, with an annular bottom surface 9 on its bottom surface corresponding to the first rotary welding mold fixing ring. A through hole is formed on the annular bottom surface, corresponding to the through hole on the first rotary welding mold fixing ring. A stepped surface 10 is provided on the inner side of the annular bottom surface for positioning and fixing with the first rotary welding mold. The two are then connected by bolts.

[0026] In use, place the upper and lower sealing rings into the sealing groove installation slot. Then, position the overlap using the second rotary welding mold. Move the fan-shaped piece of the second rotary welding mold radially to press the overlap against the sealing ring. Then, place the pressure plate, leaving a gap between the pressure plate and the fan-shaped piece. Use laser welding to fix the upper sealing ring to the overlap. Then, remove the pressure plate and the second rotary welding mold, swap the positions of the upper and lower sealing rings, cover with the pressure plate again, adjust the radial position of the second rotary welding mold, and use laser welding again to weld and fix the overlap to the lower sealing ring.

[0027] The specific embodiments described herein are merely illustrative of the concept of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

Claims

1. A welding fixture structure for sealing rings, characterized in that: The system includes a first rotary welding mold, on which a movable second rotary welding mold is provided. A sealing ring mounting groove is formed between the first and second rotary welding molds. A pressure plate is provided above the sealing ring mounting groove and is fixed on the first rotary welding mold. The pressing surface of the pressure plate is located on the surface of the sealing ring to be welded. A gap is left between the groove wall of the sealing ring mounting groove on one side of the second rotary welding mold and the pressing surface of the pressure plate. An overlap positioning groove is provided on the outer circumferential surface of the second rotary welding mold facing the sealing ring mounting groove.

2. The sealing ring welding fixture structure according to claim 1, characterized in that: The second rotary welding mold is a split structure, comprising several fan-shaped pieces centered on the axis of the first rotary welding mold.

3. The sealing ring welding fixture structure according to claim 2, characterized in that: The fan-shaped piece has a waist hole, and the first rotary welding mold has a bolt hole. The bolts that fix the first rotary welding mold and the second rotary welding mold pass through the waist hole and are fixed in the bolt hole.

4. The sealing ring welding fixture structure according to claim 2, characterized in that: The fan-shaped piece is provided with multiple protrusions, and an overlap positioning groove is formed on the outer side of the protrusions.

5. A sealing ring welding fixture structure according to any one of claims 1 to 4, characterized in that: The first rotary welding mold is provided with a fixing ring, and the fixing ring is provided with bolt holes for fixing to the pressure plate. A stepped surface is formed on the inner wall of the fixing ring, and the stepped surface is part of the sealing ring mounting groove.

6. The sealing ring welding fixture structure according to claim 5, characterized in that: The highest surface of the stepped surface is higher than the ring surface of the fixed ring.

7. A sealing ring welding fixture structure according to any one of claims 1 to 4, characterized in that: The outer circumferential surface of the second rotary welding mold is formed with a stepped positioning surface, which corresponds to the stepped surface on the first rotary welding mold.

8. A sealing ring welding fixture structure according to any one of claims 1 to 4, characterized in that: The bottom surface of the pressure plate is provided with an annular bottom surface corresponding to the fixing ring of the first rotary welding mold, and a stepped surface is provided on the inner side of the annular bottom surface.

9. A sealing ring welding fixture structure according to any one of claims 1 to 4, characterized in that: A partition is provided between the upper and lower layers of the sealing ring to be formed, and the width of the partition is the same as the width of the sealing ring mounting groove.

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