Welding tool

Abstract

The utility model relates to a welding tool which is used for welding a piping assembly and comprises a base, a supporting frame and a positioning assembly. The positioning assembly is connected to the supporting frame and at least comprises a first positioning piece, a second positioning piece and a third positioning piece, a first positioning concave part is formed in the first positioning piece, a second positioning concave part is formed in the second positioning piece, and a third positioning concave part is formed in the third positioning piece; the opening directions of the first positioning concave part, the second positioning concave part and the third positioning concave part are consistent; according to the welding tool, the positions of the first positioning piece, the second positioning piece and the third positioning piece are arranged according to the shape characteristics of the first piping unit and the second piping unit, the first piping unit and the second piping unit are positioned correspondingly, the assembling accuracy of the piping assembly is improved, the operation difficulty is reduced, and the welding efficiency is improved. And the finished product quality and uniformity of the piping assembly are improved.

Description

Technical Field

[0001] This utility model belongs to the field of auxiliary tooling equipment technology, and in particular relates to a welding tooling. Background Technology

[0002] As a crucial component of the outdoor unit of an air conditioner, the compressor generates vibrations during operation. This not only increases the noise of the outdoor unit but also affects the stability of the piping assemblies connected to the compressor, increasing the risk of piping detachment and refrigerant leakage. To mitigate the impact of vibration deterioration caused by compressor acceleration, some outdoor units use ring-shaped piping assemblies to connect to the compressor. These spatial ring-shaped assemblies can significantly absorb vibration energy in three directions, reducing the outward transmission of compressor vibration, lowering noise, and improving the stability of the piping assembly connection.

[0003] This type of piping assembly is manufactured by welding two arc-shaped piping units together. During welding, the two piping units need to be supported and positioned. Existing welding fixtures can only support a single piping unit and cannot meet the relative positional relationship between the two arc-shaped piping units. Therefore, during the welding process of the piping units, there are problems such as high positioning difficulty, complex operation, poor uniformity of the piping assembly after processing, and inability to guarantee the quality of the finished product.

[0004] The information disclosed in this background section is only intended to enhance the understanding of the background technology of this application, and therefore may include prior art that is not known to those skilled in the art. Utility Model Content

[0005] The purpose of this utility model is to provide a welding fixture to facilitate the welding of the first piping unit and the second piping unit into a ring-shaped piping assembly, thereby solving the problem that the traditional welding fixture has poor adaptability to the positioning of the first piping unit and the second piping unit, and cannot meet the positioning requirements of the ring-shaped piping assembly, resulting in large assembly errors.

[0006] To achieve the above-mentioned objectives, the present invention employs the following technical solution:

[0007] This utility model proposes a welding fixture for welding piping assemblies, comprising:

[0008] Base;

[0009] The support frame has its bottom supported on the base;

[0010] A positioning component is connected to the support frame. The positioning component includes at least a first positioning member, a second positioning member, and a third positioning member. A first positioning recess is formed on the first positioning member, a second positioning recess is formed on the second positioning member, and a third positioning recess is formed on the third positioning member. The opening directions of the first positioning recess, the second positioning recess, and the third positioning recess are consistent.

[0011] The second positioning recess is used to clamp the first end of the first piping unit, the first positioning recess is used to clamp the first end of the second piping unit, and the third positioning recess is used to clamp the second end of the first piping unit, so that the second end of the second piping unit corresponds to the second end of the first piping unit.

[0012] In some embodiments of this application, the first positioning recess, the second positioning recess, and the third positioning recess are all semi-circular groove structures extending in the vertical direction.

[0013] The first piping unit is vertically connected to the first positioning recess, and the second piping unit is vertically connected to the second and third positioning recesses.

[0014] The first positioning recess, the second positioning recess, and the third positioning recess are arranged vertically so that the first piping unit and the second piping unit are also arranged vertically, which facilitates the operator to perform welding operations at the connection position of the first piping unit and the second piping unit.

[0015] In some embodiments of this application, the second positioning member is located above the first positioning member and is located in front of or behind the first positioning member along the width direction of the base; the third positioning member is flush with the first positioning member and is located to the left or right of the first positioning member along the length direction of the base.

[0016] The first and third positioning components are arranged left and right along the length of the base, and are staggered back and forth along the width of the base. The first positioning component is located below the second positioning component and is staggered back and forth along the width of the base. The second ends of the first piping unit and the second piping unit are connected at the corresponding positions of the third positioning component. The first ends are staggered back and forth under the action of the first and second positioning components to form a three-dimensional ring structure.

[0017] In some embodiments of this application, the support frame includes a support vertical portion and a support horizontal portion. The support vertical portion is disposed at an angle at the upper end of the support vertical portion. The first positioning member is disposed at the end of the support horizontal portion. The second positioning member is connected to the support frame through a first support auxiliary frame. The third positioning member is connected to the support frame through a second support auxiliary frame.

[0018] In some embodiments of this application, the first piping unit includes a first arc-shaped pipe segment, one end of which is provided with a first straight pipe segment, and the end of the first straight pipe segment is formed with a mating pipe segment. The size of the third positioning recess is not less than the outer diameter of the first straight pipe segment and the size of the third positioning recess is less than the outer diameter of the mating pipe segment. The third positioning recess is used to clamp the first straight pipe segment.

[0019] In some embodiments of this application, a third straight pipe segment is provided at the other end of the first arc-shaped pipe segment, and a first connecting pipe segment is provided at the end of the third straight pipe segment. The size of the second positioning recess is not smaller than that of the third straight pipe segment and the size of the second positioning recess is smaller than that of the first connecting pipe segment. The second positioning recess is used to clamp the third straight pipe segment and support it below the first connecting pipe segment. The second positioning recess and the third positioning recess are located on the upper side of the first arc-shaped pipe segment.

[0020] In some embodiments of this application, the second piping unit includes a second arc-shaped pipe segment, one end of which is provided with a plug pipe segment for welding onto a mating pipe segment, and the other end of which is provided with a fourth straight pipe segment. The size of the first positioning recess is adapted to the fourth straight pipe segment, and the first positioning recess is used to clamp the fourth straight pipe segment. The first positioning member and the second positioning member are located on the lower side of the second arc-shaped pipe segment so that the first arc-shaped pipe segment and the second arc-shaped pipe segment form an annular structure.

[0021] In some embodiments of this application, the height of the first positioning member along the vertical direction is less than the length of the fourth straight pipe segment.

[0022] In some embodiments of this application, the height of the second positioning member along the vertical direction is less than the length of the third straight pipe segment; and / or

[0023] The height of the third positioning element in the vertical direction is less than the length of the first straight pipe section.

[0024] This application also proposes a welding fixture for welding piping assemblies, comprising:

[0025] Base;

[0026] The support frame has its bottom supported on the base;

[0027] A positioning component is connected to the support frame and is configured to simultaneously position the first piping unit and the second piping unit so that one end of the first piping unit corresponds to one end of the second piping unit, thereby forming a ring structure with the first piping unit and the second piping unit.

[0028] Compared with the prior art, the advantages and positive effects of this utility model are:

[0029] The welding fixture involved in this application has a positioning component including a first positioning element, a second positioning element and a third positioning element. The second positioning element and the third positioning element are respectively used to position the two ends of the first arc-shaped pipe section on the first piping unit. The first positioning element is used to position one end of the second arc-shaped pipe section on the second piping unit. The other end of the second arc-shaped pipe section corresponds to the third positioning element, so that the operator can weld the other end of the second arc-shaped pipe section to the first piping unit.

[0030] This welding fixture arranges the positions of the first positioning component, the second positioning component, and the third positioning component according to the shape characteristics of the first piping unit and the second piping unit, and positions the first piping unit and the second piping unit respectively. This helps to improve the assembly accuracy of the piping components, reduce the difficulty of operation, and improve the finished product quality and uniformity of the piping components.

[0031] Other features and advantages of this utility model will become clearer after reading the detailed embodiments of this utility model in conjunction with the accompanying drawings. Attached Figure Description

[0032] 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 some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 This is a structural diagram of the welding fixture according to an embodiment;

[0034] Figure 2 This is a schematic diagram of the welding fixture in operation according to an embodiment;

[0035] Figure 3 for Figure 2 A three-dimensional schematic diagram of the rear side of the structure in the middle;

[0036] Figure 4 This is a side view of the welding fixture according to an embodiment;

[0037] Figure 5 This is a top view of the welding fixture according to an embodiment;

[0038] Figure 6 This is a schematic diagram showing the connection between the piping assembly and the compressor according to an embodiment;

[0039] Figure 7 This is a perspective view of the piping assembly according to an embodiment;

[0040] Figure 8 This is a structural diagram of a piping assembly according to an embodiment;

[0041] Figure 9 This is a structural diagram of the first piping unit according to an embodiment;

[0042] Figure 10 This is a structural diagram of the second piping unit according to an embodiment;

[0043] Figure 11 This is a dimensional drawing of the first or second bend pipe section;

[0044] Figure label:

[0045] 100. Piping assembly; 101. Transition section; 102. First arc segment; 103. Second arc segment;

[0046] 110. First piping unit; 111. First arc-shaped pipe section; 112. Matching pipe section; 113. First straight pipe section; 114. Second straight pipe section; 115. First bend pipe section; 116. Third straight pipe section; 117. First connecting pipe section;

[0047] 120. Second piping unit; 121. Second arc-shaped pipe section; 122. Insertion pipe section; 123. Fourth straight pipe section; 124. Second bend pipe section; 125. Fifth straight pipe section; 126. Second connector section;

[0048] 200. Compressor;

[0049] 300. Welding fixtures;

[0050] 310. Base;

[0051] 320. Support frame; 321. Support vertical section; 322. Support horizontal section;

[0052] 330. First positioning member; 331. First positioning recess;

[0053] 340. Second positioning element; 341. Second positioning recess; 342. First support bracket;

[0054] 350. Third positioning component; 351. Third positioning recess; 352. Second support bracket. Detailed Implementation

[0055] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0056] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are 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.

[0057] The terms "first" and "second" 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. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0058] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0059] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0060] The following disclosure provides many different embodiments or examples for implementing various structures of this invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0061] refer to Figures 1-3 This utility model proposes a welding fixture 300 for welding a ring-shaped piping assembly. The welding fixture 300 includes a base 310, a support frame 320, and a positioning component.

[0062] The base 310 provides a supporting foundation for the welding work and is used to support it on a workbench or the ground.

[0063] The support frame 320 is supported on the base 310 at its bottom, and the support frame 320 extends upward to a certain height to provide installation and operation space for the piping assembly.

[0064] The positioning component is connected to the support frame 320, and the piping assembly is installed on the welding fixture 300 through the positioning component.

[0065] The positioning assembly includes at least a first positioning member 330, a second positioning member 340, and a third positioning member 350. A first positioning recess 331 is formed on the first positioning member 330, a second positioning recess 341 is formed on the second positioning member 340, and a third positioning recess 351 is formed on the third positioning member 350. The opening directions of the first positioning recess 331, the second positioning recess 341, and the third positioning recess 351 are consistent.

[0066] For example, the first positioning recess 331, the second positioning recess 341 and the third positioning recess 351 can be configured as horizontally upward opening structures.

[0067] Alternatively, the first positioning recess 331, the second positioning recess 341, and the third positioning recess 351 may be recessed structures that are angled to the horizontal plane. For example, but not limited to, the first positioning recess 331, the second positioning recess 341, and the third positioning recess 351 may be arranged vertically with their openings facing one side.

[0068] refer to Figure 6 The piping unit is used to connect to the compressor 200 of the outdoor unit of the air conditioner. The piping assembly 100 includes a first piping unit 110 and a second piping unit 120.

[0069] The second positioning recess 341 is used to clamp the first end of the first piping unit 110, the first positioning recess 331 is used to clamp the first end of the second piping unit 120, and the third positioning recess 351 is used to clamp the second end of the first piping unit 110, so that the second end of the second piping unit 120 corresponds to the second end of the first piping unit 110.

[0070] Combination Figure 7 , Figure 8 The first piping unit 110 of the piping assembly includes a first arc-shaped pipe section 111, and the second piping unit 120 includes a second arc-shaped pipe section 121. The first piping unit 110 and the second piping unit 120 are connected, and the first arc-shaped pipe section 111 and the second arc-shaped pipe section 121 are arranged in a ring.

[0071] Specifically, a mating pipe section 112 is provided at one end of the first piping unit 110 and the second piping unit 120, and a plug pipe section 122 is provided at the other end of the second piping unit 120 and the first piping unit 110. The inner diameter of the mating pipe section 112 is adapted to the outer diameter of the plug pipe section 122, and the plug pipe section 122 is inserted into the mating pipe section 112.

[0072] The welding fixture 300 involved in this application is used to weld the connection between the insert pipe section 122 and the mating pipe section 112 after the insert pipe section 122 is inserted into the mating pipe section 112, so that the first piping unit 110 and the second piping unit 120 are welded into one piece.

[0073] One end of the second arc-shaped pipe segment 121 is connected and positioned inside the first positioning recess 331, and the other end of the second arc-shaped pipe segment 121 extends above the third positioning recess 351. One end of the first arc-shaped pipe segment 111 is positioned and connected inside the second positioning recess 341, and the other end is positioned and connected inside the third positioning recess 351. The matching pipe segment 112 is located above the third positioning recess 351.

[0074] Insert pipe section 122 is inserted into mating pipe section 112, and insert pipe section 122 and mating pipe section 112 are welded above the third positioning member 350.

[0075] The mating pipe section 112 is specifically a straight pipe section formed by the first piping unit 110 through a pipe expansion process to increase its corresponding inner diameter, so that the insertion pipe section 122 is connected in the mating pipe section 112, thereby realizing the initial connection between the first piping unit 110 and the second piping unit 120.

[0076] refer to Figure 9A first straight pipe section 113 is also provided between the matching pipe section 112 and the first arc-shaped pipe section 111. The third positioning recess 351 is a straight positioning groove structure. The first piping unit 110 is clamped in the third positioning recess 351 through the first straight pipe section 113.

[0077] Of course, the third positioning recess 351 can also be designed as an arc-shaped positioning groove that matches the corresponding position of the first arc-shaped pipe section 111, and the first piping unit 110 is connected and positioned in the third positioning recess 351 through the first arc-shaped pipe section 111.

[0078] The outer diameter of the first straight pipe section 113 is equal to the outer diameter of the first arc-shaped pipe section 111. A transition section 101 is formed between the first straight pipe section 113 and the mating pipe section 112. The transition section 101 facilitates the transition between the first straight pipe section 113 and the mating pipe section 112, avoiding problems such as stress concentration.

[0079] The first arc-shaped pipe section 111 is provided with a second straight pipe section 114 at one end away from the first straight pipe section 113, and the other end of the second straight pipe section 114 is connected to the third straight pipe section 116 through the first bent pipe section 115.

[0080] The second straight pipe section 114 and the third straight pipe section 116 are located on both sides of the first bent pipe section 115, which facilitates the clamping and positioning of the first piping unit 110 when processing the first bent pipe section 115.

[0081] The other end of the third straight pipe section 116 is provided with a first pair of pipe sections 117. The first pair of pipe sections 117 is flared and its radial dimension is larger than that of the third straight pipe section to facilitate connection with other pipe fittings.

[0082] The second positioning recess 341 is also a vertically arranged straight groove structure. The second positioning recess 341 is used to clamp the third straight pipe section 116, and the first connecting pipe section 117 is located above the second positioning recess 341.

[0083] refer to Figure 10 The second arc-shaped pipe section 121 is provided with a fourth straight pipe section 123 at one end away from the insertion pipe section 122. The other end of the fourth straight pipe section 123 is connected to the fifth straight pipe section 125 through the second bent pipe section 124.

[0084] The first positioning recess 331 is used to clamp the fourth straight pipe segment 123. The first positioning recess 331 is designed as a straight groove structure that is adapted to the fourth straight pipe segment 123. Of course, the first positioning recess 331 can also be designed as an arc groove structure that is adapted to the first arc-shaped pipe segment 111121.

[0085] Compared to the arc-shaped positioning groove structure, the straight groove structure is easier to process and position.

[0086] Similarly, the fourth straight pipe segment 123 and the fifth straight pipe segment 125 are located at both ends of the second bent pipe segment 124, which facilitates the clamping and positioning of the second piping unit 120100 when processing the second bent pipe segment 124.

[0087] The first bent pipe section 115 and the second bent pipe section 124 are bent in opposite directions so that the center line of the third straight pipe section 116 and the center line of the fifth straight pipe section 125 are on the same straight line.

[0088] For example, but not limited to, in Figure 8 In the direction shown, the first arc-shaped pipe segment 111 in the first piping unit 110 is deflected outward relative to the plane of the paper, and correspondingly, the first bent pipe segment 115 is bent inward relative to the plane of the paper. The second arc-shaped pipe segment 121 in the second piping unit 120100 is deflected inward relative to the plane of the paper, and the second bent pipe segment 124 is bent outward relative to the plane of the paper, so that the center line of the third straight pipe segment 116 and the center line of the fifth straight pipe segment 125 are on the same straight line.

[0089] Specifically, for ease of processing, the first bent pipe section 115 and the second bent pipe section 124 both consist of two opposing arc segments, specifically, the first arc segment 102 and the second arc segment 103, respectively.

[0090] The first arc segment 102 and the second arc segment 103 are formed by bending pipes from the pipe fitting base material.

[0091] The other end of the fifth straight pipe section 125 is provided with a second pair of pipe sections 126. The first pair of pipe sections 117 and the second pair of pipe sections 126 are used to connect with other pipe fittings.

[0092] The first pair of pipe sections 117 or the second pair of pipe sections 126 are flared or reduced in diameter to facilitate connection with other pipe fittings.

[0093] A transition section 101 is formed between the third straight pipe section 116 and the first pipe section 117, and between the fifth straight pipe section 125 and the second pipe section 126, to prevent stress concentration between the flared section and other pipe sections, which could cause the pipe wall to become too thin at the corresponding position and lead to breakage.

[0094] The ring formed by the first arc-shaped pipe segment 111 and the second arc-shaped pipe segment 121 is a three-dimensional ring. One end of the first arc-shaped pipe segment 111 and the second arc-shaped pipe segment 121 are located on the same straight line, and the other end is arranged in a staggered manner. The axes are located on different straight lines, and the piping assembly 100 itself does not have spatial contact or interference.

[0095] The structural design of this piping assembly is beneficial for absorbing the vibration generated during the operation of the compressor 200, reducing the transmission of noise, and improving the connection stability of the piping assembly.

[0096] Specifically, the first positioning recess 331, the second positioning recess 341, and the third positioning recess 351 are all semi-circular groove structures extending in the vertical direction.

[0097] The first piping unit 110 is vertically connected to the first positioning recess 331, and the second piping unit 120 is vertically connected to the second positioning recess 341 and the third positioning recess 351.

[0098] The first positioning recess 331, the second positioning recess 341, and the third positioning recess 351 are arranged vertically so that the first piping unit 110 and the second piping unit 120 are also arranged vertically, which facilitates the operator to perform welding operations at the connection position of the first piping unit 110 and the second piping unit 120.

[0099] Refer again Figure 2 In some embodiments of this application, the second positioning member 340 is located above the first positioning member 330 and is located in front of or behind the first positioning member 330 along the width direction of the base 310; the third positioning member 350 is flush with the first positioning member 330 and is located to the left or right of the first positioning member 330 along the length direction of the base 310.

[0100] The first positioning member 330 and the third positioning member 350 are arranged left and right along the length direction of the base 310, and the first positioning member 330 and the third positioning member 350 are staggered back and forth along the width direction of the base 310; the first positioning member 330 is located below the second positioning member 340, and is staggered back and forth along the width direction of the base 310; the second ends of the first piping unit 110 and the second piping unit 120 are connected at the corresponding positions of the third positioning member 350; the first ends are staggered back and forth under the action of the first positioning member 330 and the second positioning member 340 to form a three-dimensional ring structure.

[0101] by Figure 5 For reference, the projection of the first positioning recess 331 on the base 310 is located directly in front of the second positioning recess 341. The distance L between the central axis of the first positioning recess 331 and the central axis of the second positioning recess 341 is not less than the outer diameter of the first arc-shaped pipe section 111, so as to avoid interference between the first piping unit 110 and the second piping unit 120.

[0102] The first positioning recess 331 and the second positioning recess 341 are arranged at different heights in the vertical direction. That is, the second positioning recess 341 is located above the first positioning recess 331, which is used to provide connection space for the first piping unit 110 and the second piping unit 120 for easy positioning.

[0103] The dimension between the central axis of the first positioning recess 331 and the central axis of the third positioning recess 351 is equal to the distance between the central axis of the first straight pipe segment and the central axis of the fourth straight pipe segment 123.

[0104] In some embodiments of this application, the support frame 320 includes a support upright portion 321 and a support horizontal portion 322. The support upright portion 321 is disposed at an angle at its upper end. A first positioning member 330 is disposed at the end of the support horizontal portion 322. A second positioning member 340 is connected to the support frame 320 through a first support auxiliary frame 342. A third positioning member 350 is connected to the support frame 320 through a second support auxiliary frame 352.

[0105] In some embodiments of this application, the first piping unit 110 includes a first arc-shaped pipe section 111, one end of which is provided with a first straight pipe section, and the end of the first straight pipe section is formed with a mating pipe section. The size of the third positioning recess 351 is not less than the outer diameter of the first straight pipe section and the size of the third positioning recess 351 is less than the outer diameter of the mating pipe section. The third positioning recess 351 is used to directly clamp the first straight pipe section.

[0106] In some embodiments of this application, a third straight pipe segment is provided at the other end of the first arc-shaped pipe segment 111, and a first connecting pipe segment is provided at the end of the third straight pipe segment. The size of the second positioning recess 341 is not smaller than that of the third straight pipe segment and the size of the second positioning recess 341 is smaller than that of the first connecting pipe segment. The second positioning recess 341 is used to clamp the third straight pipe segment and support it below the first connecting pipe segment. The second positioning recess 341 and the third positioning recess 351 are located on the upper side of the first arc-shaped pipe segment 111.

[0107] In some embodiments of this application, the second piping unit 120 includes a second arc-shaped pipe section 121. One end of the second arc-shaped pipe section 121 is provided with a plug pipe section for welding onto a mating pipe section. The other end of the second arc-shaped pipe section 121 is provided with a fourth straight pipe section 123. The size of the first positioning recess 331 is adapted to the fourth straight pipe section 123. The first positioning recess 331 is used to directly clamp the fourth straight pipe section 123. The first positioning member 330 and the second positioning member 340 are located on the lower side of the second arc-shaped pipe section 121 so that the first arc-shaped pipe section 111 and the second arc-shaped pipe section 121 form a ring structure.

[0108] refer to Figure 4 The height H1 of the first positioning element 330 along the vertical direction is less than the length of the fourth straight pipe segment 123.

[0109] In some embodiments of this application, the height H2 of the second positioning member 340 along the vertical direction is less than the length of the third straight pipe segment; and / or

[0110] The vertical height H3 of the third positioning element 350 is less than the length of the first straight pipe section.

[0111] The welding fixture 300 involved in this application has a positioning component including a first positioning element 330, a second positioning element 340, and a third positioning element 350. The second positioning element 340 and the third positioning element 350 are respectively used to position the two ends of the first arc-shaped pipe segment 111 on the first piping unit 110. The first positioning element 330 is used to position one end of the second arc-shaped pipe segment 121 on the second piping unit 120. The other end of the second arc-shaped pipe segment 121 corresponds to the third positioning element 350, so that the operator can weld the other end of the second arc-shaped segment to the first piping unit 110.

[0112] The welding fixture 300 arranges the positions of the first positioning element 330, the second positioning element 340, and the third positioning element 350 according to the shape characteristics of the first piping unit 110 and the second piping unit 120, and positions the first piping unit 110 and the second piping unit 120 respectively. This helps to improve the accuracy of piping assembly assembly, reduce the difficulty of operation, and improve the finished product quality and uniformity of piping assemblies.

[0113] Combination Figures 9-11 The inner diameter d1 of each of the first arc-shaped pipe section 111, the first straight pipe section 113, the second straight pipe section 114, the first bent pipe section 115 and the third straight pipe section 116 on the first piping unit 110 are equal, and the outer diameter D1 of each of the pipe sections is equal.

[0114] The inner diameter d2 of each pipe diameter on the second arc-shaped pipe section 121, the insertion pipe section 122, the fourth straight pipe section 123, the second bent pipe section 124, and the fifth straight pipe section 125 on the first piping unit 110 is equal, and the outer diameter D2 of each pipe diameter is equal.

[0115] The matching pipe section 112, the first pair of pipe sections 117 or the second pair of pipe sections 126 are flared, and their inner diameter is slightly larger than d1.

[0116] The length of the insertion pipe section 122 located outside the mating pipe section 112 is equal to the length of the first straight pipe section 113, and both are not less than twice the outer diameter of the first arc-shaped pipe section 111.

[0117] The radii r1 and r2 of the circles containing the center lines of the arc segments included in the first bent pipe section 115 and the second bent pipe section 124 are not less than twice the outer diameter D1 of the first arc-shaped pipe section 111.

[0118] The radius r3 of the circle containing the center lines of the first arc-shaped pipe segment 111 and the second arc-shaped pipe segment 121 is not less than twice the outer diameter D1 of the first arc-shaped pipe segment 111.

[0119] The dimensions of the aforementioned pipe sections are designed to facilitate manufacturing processes.

[0120] On the other hand, this application also proposes a welding fixture 300 for welding piping assemblies, which includes a base 310, a support frame 320 and a positioning assembly.

[0121] The support frame 320 is supported on the base 310.

[0122] The positioning component is connected to the support frame 320. The positioning component is configured to simultaneously position the first piping unit 110 and the second piping unit 120 so that one end of the first piping unit 110 corresponds to one end of the second piping unit 120, so that the first piping unit 110 and the second piping unit 120 form a ring structure.

[0123] The positioning component can be implemented in the following ways.

[0124] Method 1: The positioning component is designed to include a first positioning group and a second positioning element. The first positioning element and the second positioning element are arranged vertically opposite each other. The first positioning element has a first positioning recess (not shown) that is adapted to the first piping unit 110, and the second positioning element has a second positioning recess (not shown) that is adapted to the second piping unit 120.

[0125] A first arc-shaped pipe section 111 is formed on the first piping unit 110, and a second arc-shaped pipe section 121 is formed on the second piping unit 120. The first arc-shaped pipe section 111 and the second arc-shaped pipe section 121 are arranged vertically opposite each other to form a three-dimensional ring structure.

[0126] Both the first positioning recess and the second positioning recess are arc-shaped groove structures adapted to the first arc-shaped pipe section 111 and the second arc-shaped pipe section. The first arc-shaped pipe section 111 and the second arc-shaped pipe section are directly positioned into the first positioning recess and the second positioning recess to position the first piping unit 110 and the second piping unit 120. After positioning, the insert pipe section on the second piping unit 120 is inserted into the mating pipe section on the first piping unit 110. Then, under the support of the welding fixture 300, the connection gap between the insert pipe section and the mating pipe section is welded.

[0127] A gap is formed between the first positioning member 330 and the second positioning member 340 to facilitate the welding process of the first piping unit 110 and the second piping unit 120.

[0128] Method 2, see reference Figures 1-3The positioning component includes at least a first positioning member 330, a second positioning member 340, and a third positioning member 350. A first positioning recess 331 is formed on the first positioning member 330, a second positioning recess 341 is formed on the second positioning member 340, and a third positioning recess 351 is formed on the third positioning member 350. The opening directions of the first positioning recess 331, the second positioning recess 341, and the third positioning recess 351 are consistent.

[0129] The first positioning recess 331, the second positioning recess 341, and the third positioning recess 351 are arranged vertically, with their openings facing one side.

[0130] The piping assembly 100 includes a first piping unit 110 and a second piping unit 120.

[0131] The second positioning recess 341 is used to clamp the first end of the first piping unit 110, the first positioning recess 331 is used to clamp the first end of the second piping unit 120, and the third positioning recess 351 is used to clamp the second end of the first piping unit 110, so that the second end of the second piping unit 120 corresponds to the second end of the first piping unit 110.

[0132] The first piping unit 110 of the piping assembly includes a first arc-shaped pipe section 111, and the second piping unit 120 includes a second arc-shaped pipe section 121. The first piping unit 110 and the second piping unit 120 are connected, and the first arc-shaped pipe section 111 and the second arc-shaped pipe section 121 are arranged in a ring.

[0133] Specifically, a mating pipe section 112 is provided at one end of the first piping unit 110 and the second piping unit 120, and a plug pipe section 122 is provided at the other end of the second piping unit 120 and the first piping unit 110. The inner diameter of the mating pipe section 112 is matched with the outer diameter of the plug pipe section 122. After the plug pipe section on the second piping unit 120 is inserted into the mating pipe section on the first piping unit 110, the connection gap between the plug pipe section and the mating pipe section is welded under the support of the welding fixture 300.

[0134] Whenever possible, the various aspects and features described and shown in the specification can be applied individually, and these individual aspects can serve as the subject of a divisional application.

[0135] In the description of the above embodiments, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0136] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A welding fixture for welding piping assemblies, characterized in that, include: Base; The support frame has its bottom supported on the base; A positioning component is connected to the support frame. The positioning component includes at least a first positioning member, a second positioning member, and a third positioning member. A first positioning recess is formed on the first positioning member, a second positioning recess is formed on the second positioning member, and a third positioning recess is formed on the third positioning member. The opening directions of the first positioning recess, the second positioning recess, and the third positioning recess are consistent. The second positioning recess is used to clamp the first end of the first piping unit, the first positioning recess is used to clamp the first end of the second piping unit, and the third positioning recess is used to clamp the second end of the first piping unit, so that the second end of the second piping unit corresponds to the second end of the first piping unit.

2. The welding fixture according to claim 1, characterized in that, The first positioning recess, the second positioning recess, and the third positioning recess are all semi-circular groove structures extending in the vertical direction.

3. The welding fixture according to claim 1, characterized in that, The second positioning member is located above the first positioning member and is located in front of or behind the first positioning member along the width direction of the base; the third positioning member is flush with the first positioning member and is located to the left or right of the first positioning member along the length direction of the base.

4. The welding fixture according to claim 1, characterized in that, The support frame includes a support vertical part and a support horizontal part. The support vertical part is set at an angle at the upper end of the support vertical part. The first positioning member is set at the end of the support horizontal part. The second positioning member is connected to the support frame through a first support auxiliary frame. The third positioning member is connected to the support frame through a second support auxiliary frame.

5. The welding fixture according to claim 1, characterized in that, The first piping unit includes a first arc-shaped pipe section, one end of which is provided with a first straight pipe section, and the end of the first straight pipe section is formed with a mating pipe section. The size of the third positioning recess is not less than the outer diameter of the first straight pipe section and the size of the third positioning recess is less than the outer diameter of the mating pipe section. The third positioning recess is used to clamp the first straight pipe section.

6. The welding fixture according to claim 5, characterized in that, A third straight pipe section is provided at the other end of the first arc-shaped pipe section, and a first connecting pipe section is provided at the end of the third straight pipe section. The size of the second positioning recess is not smaller than that of the third straight pipe section and the size of the second positioning recess is smaller than that of the first connecting pipe section. The second positioning recess is used to clamp the third straight pipe section and support it below the first connecting pipe section. The second positioning recess and the third positioning recess are located on the upper side of the first arc-shaped pipe section.

7. The welding fixture according to claim 5, characterized in that, The second piping unit includes a second arc-shaped pipe section. One end of the second arc-shaped pipe section is provided with a plug pipe section for welding onto a mating pipe section. The other end of the second arc-shaped pipe section is provided with a fourth straight pipe section. The size of the first positioning recess is adapted to the fourth straight pipe section. The first positioning recess is used to clamp the fourth straight pipe section. The first positioning member and the second positioning member are located on the lower side of the second arc-shaped pipe section so that the first arc-shaped pipe section and the second arc-shaped pipe section form a ring structure.

8. The welding fixture according to claim 7, characterized in that, The height of the first positioning element in the vertical direction is less than the length of the fourth straight pipe segment.

9. The welding fixture according to claim 6, characterized in that, The height of the second positioning element in the vertical direction is less than the length of the third straight pipe section; and / or The height of the third positioning element in the vertical direction is less than the length of the first straight pipe section.

10. A welding fixture for welding piping assemblies, characterized in that, include: Base; The support frame has its bottom supported on the base; A positioning component, connected to the support frame, is configured to simultaneously position a first piping unit and a second piping unit in the piping assembly, such that one end of the first piping unit corresponds to one end of the second piping unit, thereby forming a ring structure with the first piping unit and the second piping unit.

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