welding ring

Abstract

The utility model discloses a kind of welding rings, it is related to the technical field of processing accessory, wherein, welding ring includes inner ring part and outer ring part, outer ring part ring is in the outer periphery of inner ring part, inner ring part includes the first end surface for abutting to corresponding to be welded place, outer ring part includes the second end surface for abutting to corresponding to be welded place, in the axial direction of the welding ring, first end surface and second end surface are located at the same side, and have height difference. The technical scheme provided by the utility model aims at improving welding quality and efficiency.

Description

Technical Field

[0001] This utility model relates to the field of processing accessories technology, and in particular to a welding ring. Background Technology

[0002] Traditional welding methods, such as welding the liquid storage tank and copper pipe of a compressor, and connecting pipes, typically use strip solder to gradually form a circumferential weld. However, this welding method is not only cumbersome and inefficient, but also prone to inconsistent weld quality due to positioning deviations or uneven solder distribution during continuous welding operations, affecting the stability and reliability of product molding. Utility Model Content

[0003] The main purpose of this invention is to propose a welding ring that aims to improve welding quality and efficiency.

[0004] To achieve the above objectives, the welding ring proposed in this utility model includes an inner ring portion and an outer ring portion. The outer ring portion is disposed around the outer periphery of the inner ring portion. The inner ring portion includes a first end face for abutting against the corresponding welding point. The outer ring portion includes a second end face for abutting against the corresponding welding point. In the axial direction of the welding ring, the first end face and the second end face are located on the same side and have a height difference.

[0005] In one embodiment, the height difference L between the first end face and the second end face satisfies: 1mm≤L≤3mm.

[0006] In one embodiment, the ring width of the outer ring portion is greater than the ring width of the inner ring portion, and the difference between the ring width of the outer ring portion and the ring width of the inner ring portion is less than or equal to 1 mm.

[0007] In one embodiment, the radial reference cross-sections of the inner ring portion and the outer ring portion are rectangular, and the annular surfaces of the inner ring portion and the outer ring portion are arranged in parallel along the ring width direction.

[0008] In one embodiment, at least one of the inner ring portion and the outer ring portion has a reference cross-section whose width direction is parallel to the ring width direction of the weld ring, and whose length direction is parallel to the height direction of the weld ring.

[0009] In one embodiment, the width w of the reference section satisfies: 1mm≤w≤2mm, and the length h of the section satisfies: h≥3mm.

[0010] In one embodiment, the outer ring portion and the inner ring portion are interference-fitted.

[0011] In one embodiment, the inner diameter of the outer ring is D1, and the outer diameter of the inner ring is D2, satisfying: 0mm≤D2-D1≤0.1mm.

[0012] In one embodiment, the welding ring comprises phosphor bronze, and the density of the welding ring is 7.7 g / cm³. 3 Up to 8.9 g / cm 3 between.

[0013] In one embodiment, the welding ring has a seam at a position in the circumferential direction, and the gap j of the seam along the circumferential direction satisfies: j≤2mm.

[0014] In one embodiment, the melting temperature of the welding ring is between 700°C and 810°C.

[0015] The technical solution of this utility model forms a welding ring by fixing the outer ring portion to the outer periphery of the inner ring portion. The second end face of the outer ring portion abutting the corresponding welding point and the first end face of the inner ring portion abutting the corresponding welding point are on the same side of the welding ring in the axial direction and have a height difference. It can be seen that after the welding ring is assembled, the first end face of the inner ring portion can be adapted to abut the corresponding welding point, and the second end face of the outer ring portion can be adapted to abut the corresponding welding point, ensuring that the welding ring can cover at least two welding points that are spaced apart along the axial direction at the same time. Therefore, it is not necessary to place two welding rings separately, avoiding multiple assembly and reducing the positional offset caused by assembly operations. Then, welding operations on a single welding ring can complete the welding work of two welding points, improving welding efficiency. Furthermore, since the welding ring has already covered the corresponding annular welding points, the solder distribution of the welding ring in the circumferential direction is uniform, avoiding the problem of uneven solder caused by positioning deviation, thereby improving the welding quality. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0017] Figure 1 A schematic diagram of the structure of an embodiment of the welding ring provided by this utility model;

[0018] Figure 2 for Figure 1 Cross-sectional view of the welding ring;

[0019] Figure 3 for Figure 2 A magnified view of a section at point A in the middle;

[0020] Figure 4 for Figure 1 Schematic diagrams showing the welding ring before and after welding the liquid receiver and copper pipes of the compressor.

[0021] Explanation of icon numbers:

[0022] 100. Inner ring; 110. First end face; 200. Outer ring; 220. Second end face; 301. Storage tank; 302. Inner conduit; 303. Outer conduit; 400. Joint.

[0023] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0025] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0026] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0027] This utility model proposes a welding ring.

[0028] Please refer to Figure 1 and Figure 2 , Figure 4In one embodiment of the present invention, the welding ring includes an inner ring portion 100 and an outer ring portion 200. The outer ring portion 200 is disposed around the outer periphery of the inner ring portion 100. The inner ring portion 100 includes a first end face 110 for abutting against the corresponding welding point. The outer ring portion 200 includes a second end face 220 for abutting against the corresponding welding point. In the axial direction of the welding ring, the first end face 110 and the second end face 220 are located on the same side and have a height difference.

[0029] The technical solution of this utility model is to fix the outer ring portion 200 to the outer periphery of the inner ring portion 100 to form a welding ring. The second end face 220 of the outer ring portion 200 and the corresponding welding point, and the first end face 110 of the inner ring portion 100 and the corresponding welding point are on the same side of the welding ring in the axial direction and have a height difference. As can be seen, after the welding ring is assembled, the first end face 110 of the inner ring 100 can be adapted to abut against the corresponding welding position, and the second end face 220 of the outer ring 200 can be adapted to abut against the corresponding welding position, ensuring that the welding ring can cover at least two welding positions that are spaced apart along the axial direction at the same time. Therefore, it is not necessary to place two welding rings separately, avoiding multiple assembly and reducing positional offset caused by assembly operations. Then, welding operations can be performed on a single welding ring to complete the welding work of two welding positions, improving welding efficiency. Furthermore, since the welding ring has already covered the corresponding ring-shaped welding position, the solder distribution of the welding ring in the circumferential direction is uniform, avoiding the problem of uneven solder caused by positioning deviation, thereby improving welding quality.

[0030] It should be noted that the welding ring can be used for welding between the compressor's liquid receiver 301 and the copper pipe, such as... Figure 4 As shown, the inner ring 100 corresponds to the welding point between the outer pipe 303 and the inner conduit 302 of the compressor, and the outer ring 200 corresponds to the welding point between the liquid storage tank 301 and the inner conduit 302 of the compressor. The two welding points are spaced apart in the extension direction of the inner conduit 302, that is, in the axial direction. This space is equal to the axial distance between the first end face 110 and the second end face 220. Thus, the first end face 110 of the inner ring 100 can be adapted to abut against the stepped surface formed by the inner conduit 302 and the outer pipe 303, and the second end face 220 of the outer ring 200 can be adapted to abut against the stepped surface formed by the inner conduit 302 and the liquid storage tank 301. Thus, when the welding ring is installed at the connection point between the liquid storage tank 301 and the copper pipe, it can cover the welding points between the inner conduit 302 and the outer pipe 303, and the welding points between the inner conduit 302 and the liquid storage pipe, so that the welding operation of the two welding points can be completed in one welding operation. In this case, the first end face 110 of the inner ring portion 100 may be protruding from the second end face 220 of the outer ring portion 200, or the first end face 110 of the outer ring portion 200 may be protruding from the first end face 110 of the inner ring portion 100.

[0031] It can be understood that the axial direction of the welding ring is parallel to a straight line passing through the center of the welding ring and perpendicular to the plane of the welding ring. The first end face 110 and the second end face 220 are distributed along the axial direction of the welding ring, that is, they are located at the same axial end. This allows the inner ring portion 100 and the outer ring portion 200 to simultaneously and in the same direction abut against the end face structure of the corresponding welding point during assembly. This ensures that during the heating and melting process of the welding ring, the solder of the inner ring portion 100 and the outer ring portion 200 uniformly fills the two welding interfaces along the axial direction, effectively avoiding welding deviations in either of the two welding points due to inconsistent side directions. At the same time, it also enhances the positioning stability of the welding ring during tooling clamping and automatic placement, facilitating accurate alignment with double-layer annular or stepped welding surfaces, thereby improving the assembly accuracy and connection reliability of multi-point welding.

[0032] In one embodiment, please refer to Figures 1 to 3 The height difference L between the first end face 110 and the second end face 220 satisfies: 1mm ≤ L ≤ 3mm. The height difference L between the first end face 110 and the second end face 220 is set between 1mm and 3mm. Similarly, the distance between the welding points corresponding to the inner ring portion 100 and the outer ring portion 200 is also limited to between 1mm and 3mm. Within this distance range, the independence of welding the corresponding welding points on the inner ring portion 100 and the outer ring portion 200 can be ensured, guaranteeing post-weld stability and preventing excessive solder overflow at a particular welding point, thus ensuring welding quality. In this way, a single welding ring can complete the welding operation for two welding points with a distance between 1mm and 3mm, ensuring good welding quality for both welding points and improving welding efficiency and quality. The height difference L between the first end face 110 and the second end face 220 is the average axial distance between the two welding points along the first end face 110 and the second end face 220. Of course, in other embodiments, depending on the specifications and size of the area to be welded and the size of the weld, the height difference L between the first end face 110 and the second end face 220 can be greater than 3mm or less than 1mm.

[0033] In one embodiment, please refer to Figures 1 to 3The outer ring 200 has a wider ring width than the inner ring 100, and the difference between the outer ring 200 and the inner ring 100 is less than or equal to 1 mm. Without loss of generality, in the radial direction of the welding ring, the size of the area to be welded corresponding to the inner ring 100 is smaller than the size of the area to be welded corresponding to the outer ring 200. This ensures that the outer ring 200 has sufficient solder volume to achieve a reliable connection, while also taking into account the uniformity of solder distribution in the inner ring 100. This avoids solder flow imbalance, uneven wetting, or eccentric capillary effects during welding due to excessive ring width differences, thereby improving the consistency of the double-ring welding interface and ensuring the quality of simultaneous welding of the two areas to be welded. This difference, limited to within 1mm, also ensures that the inner ring 100 and outer ring 200 maintain mechanical symmetry in their overall structure, reducing the risk of stress distortion during the hot-melt process. This guarantees stable positioning and synchronous fusion of the welding ring during automated placement and heating welding, making it suitable for connection scenarios requiring high welding symmetry and electrical conductivity uniformity. It avoids issues such as incomplete soldering, bridging, or contact resistance fluctuations caused by uneven solder distribution between the inner and outer rings in multi-point welding. Furthermore, as... Figure 4 As shown, the outer ring 200 has a larger ring width, which is suitable for the design of a larger stepped gap formed by the liquid storage tank 301 and the inner conduit 302. This ensures the welding stability of the liquid storage tank 301 and the inner conduit 302, and also reduces the flow distance after the weld ring melts, preventing the solder from flowing to the surface of the liquid storage tank 301 and forming flow marks. The ring widths of the inner ring 100 and the outer ring 200 are their respective average ring widths. Of course, in other embodiments, the ring width of the inner ring 100 can also be greater than or equal to the ring width of the outer ring 200, depending on the difference in the gap at the welded area corresponding to the inner ring 100 and the outer ring 200.

[0034] In one embodiment, please refer to Figures 1 to 3The inner ring 100 and the outer ring 200 have rectangular reference sections along the radial direction, and the inner ring 100 and the outer ring 200 are arranged in parallel along the ring width direction. It should be noted that the reference section is understood as the section formed by cutting the weld ring along the radial direction, and this section is parallel to the central axis of the weld ring. It is understood that the inner ring 100 and the outer ring 200 are in planar contact, and the radial force on the welding ring is planar force. When the welding ring is assembled under axial pressure, it also has a uniform contact area and stable mechanical support, which helps ensure the connection stability of the outer ring 200 and the inner ring 100. Simultaneously, it ensures that the first end face 110 of the inner ring 100 and the second end face 220 of the outer ring 200 achieve parallel and close contact with their respective welding points in the coaxial plane, improving the wetting consistency and filling reliability of the solder during melting. This effectively solves the problems of insufficient connection strength and electrical performance fluctuations caused by mismatched contact surfaces, deformation, or uneven solder distribution in multi-point welding, thereby ensuring the welding quality of the corresponding welding points of the inner ring 100 and the outer ring 200. Of course, in other embodiments, the radial reference cross-section of the inner ring 100 and the outer ring 200 can also be circular.

[0035] Furthermore, in this embodiment, please refer to Figures 1 to 3 At least one of the inner ring portion 100 and the outer ring portion 200 has a reference cross-section whose width direction is parallel to the ring width direction of the welding ring, and whose length direction is parallel to the height direction of the welding ring. Without loss of generality, the area to be welded is opposite to the welding ring along the central axis direction, and the solder of the inner ring portion 100 and the outer ring portion 200 fills and welds to the corresponding area to be welded along the central axis direction. The inner ring portion 100 and / or the outer ring portion 200 have a rectangular profile in radial cross-section, and their length direction is parallel to the central axis, i.e., the height direction of the solder. On the one hand, this helps to increase the contact surface of the inner ring portion 100 and the outer ring portion 200, thereby ensuring the structural stability of the welding ring; on the other hand, it ensures that the first end face 110 of the inner ring portion 100 and the second end face 220 of the outer ring portion 200 have sufficient contact area in the height direction, so that the welding ring can stably collapse along the height direction during heating and melting, promoting the synchronous and uniform spread of solder between the two interfaces to be welded, improving the wetting effect and the connection strength. Furthermore, the longer side of the reference section abuts against the part to be joined in the radial direction, ensuring that the welding ring maintains a stable position during welding, thereby ensuring the quality of simultaneous welding of the two parts. Of course, in other embodiments, the width direction of the reference section may be parallel to the height direction of the welding ring, and the length direction of the reference section may be parallel to the ring width direction of the welding ring.

[0036] Specifically, in this embodiment, please continue to refer to... Figures 1 to 3The width w of the reference section satisfies: 1mm ≤ w ≤ 2mm, and the length h of the section satisfies: h ≥ 3mm. It can be understood that for both the inner ring 100 and the outer ring 200, 1mm ≤ w ≤ 2mm ensures that the inner ring 100 and the outer ring 200 have a moderate solder distribution width in the radial direction. This satisfies the space compactness requirement of small-pitch welding while ensuring sufficient solder volume for reliable connection strength. Simultaneously, the length h of the reference section is greater than or equal to 3mm, and this length direction is parallel to the height direction of the weld ring, thus providing sufficient axial solder reserve. During welding, this effectively compensates for assembly gaps and promotes uniform collapse and wetting of molten solder along the height direction, preventing incomplete welds or discontinuous connections due to insufficient solder. Specifically, the w of the inner ring 100 is less than the w of the outer ring 200, and the h of the inner ring 100 is less than the h of the outer ring 200. Without loss of generality, the values ​​of w and h are the average width and average length of the reference cross-section of the inner ring 100 or the outer ring 200, respectively.

[0037] In one embodiment, please refer to Figure 2 and Figure 3 The outer ring portion 200 and the inner ring portion 100 are interference-fitted, with the inner diameter of the outer ring portion 200 being D1 and the outer diameter of the inner ring portion 100 being D2, satisfying: 0mm ≤ D2 - D1 ≤ 0.1mm. This interference fit ensures that the inner ring portion 100 and the outer ring portion 200 form a tight mechanical interlocking structure before assembly. This not only effectively improves the overall structural stability of the welding ring, preventing relative displacement or loosening during handling or automatic placement, but also promotes the uniform outward diffusion of solder from the contact surface during heating and welding, guiding the molten metal to simultaneously wet the two areas to be welded. This enhances the synchronicity and consistency of the two-point welding, ensuring the quality of simultaneous welding of the two areas. Of course, in other embodiments, the inner ring portion 100 and the outer ring portion 200 can also be fixedly connected by adhesive or snap-fit; alternatively, the inner ring portion 100 and the outer ring portion 200 can be integrally formed.

[0038] Regarding the material of the welding ring, in one embodiment, please refer to... Figure 1 The welding ring consists of phosphor bronze, and its density is 7.7 g / cm³. 3 Up to 8.9 g / cm 3 Between these parameters. It's understandable that the welding ring, made of phosphor bronze, possesses excellent electrical and thermal conductivity and moderate melting characteristics, which facilitates rapid and uniform heat transfer and solder wetting during the welding process. The density of the welding ring is controlled at 7.7 g / cm³. 3 Up to 8.9 g / cm 3Within this density range, the dense and uniform microstructure of the phosphor bronze alloy after pressing and molding is ensured, effectively guaranteeing sufficient solder mass per unit volume in the welding ring. This satisfies the filling requirements of the double welding interface, avoiding problems such as incomplete welding and insufficient strength caused by material porosity or excessive porosity, thus ensuring welding quality. The welding ring can be welded using a brazing process, specifically a high-frequency induction brazing process. A high-frequency power supply is used to heat the phosphor bronze welding ring, automatically melting and welding it. This replaces manual welding operations, improves the working environment, and increases welding efficiency. Of course, in other embodiments, depending on the material of the area to be welded, the welding ring material may also include tin-lead solder.

[0039] The welding ring has a melting temperature between 700℃ and 810℃. In conventional high-temperature welding processes, the welding ring exhibits good melt flowability, enabling it to uniformly wet the two areas to be welded corresponding to the first end face 110 of the inner ring 100 and the second end face 220 of the outer ring 200 during heating. This achieves a reliable and dense metallurgical bond while avoiding thermal damage to the surrounding area caused by excessively high melting points. Simultaneously, this melting point ensures structural stability of the welding ring during assembly and preheating, preventing premature melting or oxidation, thus ensuring controllable timing and forming quality in the two-point welding process. Generally speaking, the welding ring can be purplish-red or silver, depending on the processing technology.

[0040] In one embodiment, please refer to Figure 1 The welding ring has a seam 400 at its circumferential position, and the gap j along the circumferential direction of the seam 400 satisfies: j ≤ 2mm. It can be understood that the welding ring can be processed from a single annular blank using stamping or cutting processes, facilitating quick fitting onto the component to be welded during assembly through slight elastic deformation. This is particularly suitable for stepped shafts or closed connection structures that cannot be fitted from the ends. Simultaneously, controlling the gap j of the seam 400 within 2mm ensures the structural integrity and positioning stability of the welding ring at room temperature, preventing deformation or displacement during installation due to excessive gaps. It also enables rapid closure and uniform fusion of the seam 400 area during heating and melting, avoiding welding defects and ensuring that the solder on the inner ring 100 and outer ring 200 simultaneously and continuously wets the two surfaces to be welded, improving the reliability of the connection and the welding quality. In this way, the problems of inconvenient welding ring assembly, poor applicability, and difficulties in aligning and discontinuous connections of split welding parts are solved, achieving both assembly flexibility and welding integrity.

[0041] The above description is merely an exemplary embodiment of the present utility model and does not limit the scope of protection of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the scope of protection of the present utility model.

Claims

1. A welding ring, characterized in that, The welding ring includes an inner ring portion and an outer ring portion. The outer ring portion is disposed around the outer periphery of the inner ring portion. The inner ring portion includes a first end face for abutting against the corresponding welding position. The outer ring portion includes a second end face for abutting against the corresponding welding position. In the axial direction of the welding ring, the first end face and the second end face are located on the same side and have a height difference.

2. The welding ring as described in claim 1, characterized in that, The height difference L between the first end face and the second end face satisfies: 1mm≤L≤3mm.

3. The welding ring as described in claim 1, characterized in that, The outer ring width is greater than the inner ring width, and the difference between the outer ring width and the inner ring width is less than or equal to 1 mm.

4. The welding ring as described in claim 1, characterized in that, The inner ring and the outer ring have rectangular reference sections along the radial direction, and the inner ring and the outer ring have parallel annular surfaces distributed along the ring width direction.

5. The welding ring as described in claim 4, characterized in that, At least one of the inner ring portion and the outer ring portion, the width direction of the reference section is parallel to the ring width direction of the weld ring, and the length direction of the reference section is parallel to the height direction of the weld ring.

6. The welding ring as described in claim 5, characterized in that, The width w of the reference section satisfies: 1mm≤w≤2mm, and the length h of the section satisfies: h≥3mm.

7. The welding ring as described in claim 1, characterized in that, The outer ring and the inner ring are interference-fitted.

8. The welding ring as described in claim 7, characterized in that, The inner diameter of the outer ring is D1, and the outer diameter of the inner ring is D2, satisfying: 0mm≤D2-D1≤0.1mm.

9. The welding ring as described in claim 1, characterized in that, The welding ring has a joint in the circumferential direction, and the gap j of the joint along the circumferential direction satisfies: j≤2mm.

10. The welding ring as claimed in claim 1, characterized in that, The welding ring comprises phosphor bronze, and the density of the welding ring is 7.7 g / cm³. 3 Up to 8.9 g / cm 3 between; And / or, the melting temperature of the welding ring is between 700°C and 810°C.

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