Welding limiting device

Abstract

The utility model provides a welding limiting device. The welding limiting device comprises a base; an upper template; a fixing rod; an ear positioning rod; a head positioning rod; a positioning pin; the base is used for supporting the whole device, the fixing rods are installed on the two edges of the base, the cylindrical pins are arranged above the fixing rods, the upper die plate is fixedly connected with the fixing rods through the cylindrical pins, the base further comprises threaded holes, and the ear positioning rods and the head positioning rods are fixed to the bottom plate in a threaded fit mode. According to the welding limiting device, the required position can be accurately limited, the product welding quality is improved, meanwhile, the welding difficulty is reduced, and the safety of welding personnel is ensured.

Description

Technical Field

[0001] The utility model relates to a welding device, in particular to a welding limiting device. Background Art

[0002] In existing heat exchanger products, copper is often the preferred material for heating or cooling due to its excellent thermal conductivity. For example, copper tube structures are commonly used in some heat exchangers, and copper tube heat exchangers are widely used in the industrial field. The most commonly used connection method is welding. On the one hand, due to the requirements of welding technology, professional personnel are often required to operate. The welding quality will affect the quality of the final product, and welding technology must also ensure the safety of welders. On the other hand, the copper tube structures in different products vary. How to improve the welding quality and efficiency of copper tubes with specific structures, reduce welding difficulty, and enhance the energy efficiency of heat exchangers is also one of the issues that need to be continuously optimized and improved.

[0003] Therefore, it is necessary to provide a welding limit device to overcome the above-mentioned defects. Utility Model Content

[0004] The purpose of the utility model is to provide a welding limit device, which can achieve high-quality welding by rationally designing the structure, while reducing the difficulty of welding and ensuring the safety of welders.

[0005] According to one aspect of the present invention, a welding limiter is provided for welding an inlet pipe assembly and a return pipe assembly, which is characterized by comprising:

[0006] Base; upper template; fixing rod; ear positioning rod; head positioning rod; positioning pin;

[0007] The base is used to support the entire device. Fixed rods are installed on both edges. There are cylindrical pins above the fixed rods. The upper template is fixedly connected to the fixed rods through the cylindrical pins. The base also includes threaded holes. The ear positioning rod and the head positioning rod are fixed to the base plate through threaded cooperation.

[0008] Preferably, the plane connecting the bottom plate and other components is a rectangle, the ratio of its width B to length L is in the range of 0.3 to 0.50, and the bottom is used to support the fixing rod, the ear positioning rod, and the head positioning rod.

[0009] Preferably, the number of fixing rods is 2, the main body is a hexagonal columnar structure, and the bottom has a cylindrical connecting pin, which is placed close to the short side of the base, and fixed with the base through the connecting pin. The ratio of the distance L3 between the centers of the two fixing rods to the length L of the base is in the range of 0.80 to 0.95, and the ratio of the length H1 of the hexagonal column part of the fixing rod to the total length H of the fixing rod is in the range of 0.78 to 0.95.

[0010] Preferably, the head positioning rod includes a main body, a brim, and a top. The lower end of the main body has a threaded column, which is connected to the base by a thread. The brim is placed on the upper part of the main body, and the top is placed on the upper part of the brim, which is used to connect the bottom of the water inlet pipe group and the return pipe group. The ratio of the diameter of the side wall of the top of the cap Φ4 to the diameter of the side wall of the brim Φ3 is in the range of 0.75 to 0.90.

[0011] Preferably, the water inlet pipe group includes a water inlet group copper tube and a water inlet group pipe cap, and the water inlet group copper tube is placed on the water inlet group pipe cap. The return water pipe group includes a return water group copper tube and a return water group pipe cap. The water inlet group pipe cap and the return water group pipe cap are both similar cylindrical structures and have ear structures. There is a hole in the middle of the bottom of the water inlet group pipe cap and the return water group pipe cap, which is placed above the head positioning rod and contacts the side wall of the cap top of the head positioning rod. The head positioning rod is used to limit the water inlet group pipe cap and the return water group pipe cap.

[0012] Preferably, the upper portion of the ear positioning rod has a protruding fixing column, the hole of the ear structure is placed on the fixing column on the upper portion of the ear positioning rod, and the fixing column is used to limit the ear structure.

[0013] Preferably, the ratio of the diameter Φ1 of the fixing post on the ear locating rod to the diameter Φ2 of the ear locating rod is in the range of 0.2 to 0.35.

[0014] Preferably, there are two head positioning rods, the ratio of the straight-line distance L2 between their centers to the base length L is in the range of 0.40 to 0.60, and the ratio of the distance B3 from the center to the base edge along the base width direction to the base width B is 0.50.

[0015] Preferably, the ratio of the distance L2 between the two head positioning rods to the length L of the base plate is in the range of 0.30 to 0.50.

[0016] Preferably, the ratio of the sum of the heights H3 of the head positioning rod body, the brim, and the top of the hat to the total height H2 of the head positioning rod is in the range of 0.70 to 0.85.

[0017] Preferably, the upper template is a rectangular structure as a whole, and the upper template contains three rows of through holes of the same size, which are used to place the positioning pins. The three rows of through holes, the distance L5 between the centers of each two adjacent through holes in a row close to the longer edge of the upper template, and the ratio of the distance L5 to the length L8 of the upper template are 0.06 to 0.09, the ratio to the distance L7 between the centers of the first and third rows of through holes is in the range of 0.70 to 0.90, and the ratio to the distance L6 between the centers of the first and second rows of through holes is in the range of 0.80 to 2.20.

[0018] Preferably, the water inlet pipe group or the return pipe group includes a copper pipe group and a pipe cap group, one end of the copper pipe group is placed below the upper template, the copper pipe hole is coaxial with the through hole on the upper template, and the other end of the copper pipe group is placed above the pipe cap group.

[0019] Preferably, there are multiple positioning pins, which pass through the through holes of the upper template and are inserted into one end of the copper tube group close to the upper template to limit the copper tube group.

[0020] The utility model provides a welding limiter device comprising a base, an upper template, a fixing rod, an ear positioning rod, a head positioning rod, and a positioning pin. The template and the fixing rod are fixedly connected by cylindrical pins. The base also includes threaded holes, and the ear positioning rod and the head positioning rod are fixed to the bottom plate through threaded engagement. This structure can better achieve the welding of the water inlet pipe group and the water return pipe group, improve welding quality and ensure welding efficiency, while reducing welding difficulty and ensuring the safety of the welder. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0022] Figure 1 It is a schematic diagram of the utility model with an inlet pipe group and a return pipe group;

[0023] Figure 2 It is an overall schematic diagram of the welding limit device of the utility model;

[0024] Figure 3 This is a top view of the base welding limit device without the upper template and positioning pins;

[0025] Figure 4 It is the side view of the fixed rod;

[0026] Figure 5 The three-dimensional view and the front view of the head positioning rod are shown;

[0027] Figure 6 The three-dimensional view and top view of the upper template;

[0028] Figure 7 is a schematic diagram of the water inlet pipe group;

[0029] Figure 8 It is a schematic diagram of the return pipe group;

[0030] Description of Figure Numbers:

[0031] 1. Welding limit device; 2. Water inlet pipe group; 3. Water return pipe group; 10. Base; 20. Upper template; 30. Fixing rod; 40. Head positioning rod; 50. Ear positioning rod; 60. Positioning pin; 21. Copper tube of water inlet group; 22. Pipe cap of water inlet group; 31. Copper tube of return water group; 32. Pipe cap of return water group; 201. Through hole; 401. Main body; 402. Brim; 403. Top of hat; A. Ear structure. DETAILED DESCRIPTION

[0032] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0033] To simplify the drawings, only the parts relevant to the present invention are schematically shown in each figure. They do not represent the actual structure of the product. In addition, to simplify the drawings and facilitate understanding, in some figures, only one of the components with the same structure or function is schematically depicted or labeled. In this document, "one" not only means "only one" but also "more than one."

[0034] It should be further understood that the term "and / or" used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

[0035] It should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they can refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0036] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0037] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the specific implementation methods of the present invention will be described below with reference to the accompanying drawings. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without inventive work.

[0038] See also Figure 1 、 Figure 2, this embodiment provides a welding limit device 1, which is used to weld the water inlet pipe group 2 and the return pipe group 3, including: a base 10; an upper template 20; a fixing rod 30; an ear positioning rod 50; a head positioning rod 40; and a positioning pin 60; the base 10 is used to support the entire device, with fixing rods 30 installed on both edges, and a cylindrical pin above the fixing rod 30, the upper template 20 and the fixing rod 30 are fixedly connected by the cylindrical pin, and the base 10 also includes a threaded hole, and the ear positioning rod 50 and the head positioning rod 40 are fixed to the bottom plate through threaded cooperation.

[0039] See also Figure 2 and Figure 3 The plane connecting the bottom plate and other components is rectangular, and the ratio of its width B to length L ranges from 0.3 to 0.50. The bottom is used to support the fixing rod 30, the ear positioning rod 50, and the head positioning rod. Furthermore, the ratio of width B to length L can be 0.34, 0.36, 0.38, or 0.37.

[0040] See also Figure 4 There are two fixing rods 30, and the main body 401 is a hexagonal columnar structure with cylindrical connecting pins at the bottom, each located near the short side of the base 10. The connecting pins secure the fixing rods 30 to the base 10. The ratio of the distance L3 between the centers of the two fixing rods 30 to the length L of the base 10 ranges from 0.80 to 0.95, and the ratio of the length H1 of the hexagonal column portion of the fixing rod 30 to the total length H of the fixing rod 30 ranges from 0.78 to 0.95. Furthermore, the ratio of the distance L3 between the centers of the two fixing rods 30 to the length L of the base 10 can be 0.80, 0.90, 0.91, or 0.94, and the ratio of the length H1 of the hexagonal column portion of the fixing rod 30 to the total length H of the fixing rod 30 can be 0.79, 0.80, 0.81, or 0.85. This structure can better adapt to the overall height of the inlet pipe group 2 and the return pipe group 3, avoiding insufficient welding space.

[0041] See also Figure 5 The head positioning rod 40 includes a main body 401, a brim 402, and a cap top 403. The lower end of the main body 401 has a threaded column that is threadedly connected to the base 10. The brim 402 is located on the upper portion of the main body 401, and the cap top 403 is located on the upper portion of the brim 402. It is used to connect the bottom of the water inlet pipe group 2 and the water return pipe group 3. The ratio of the side wall diameter Φ4 of the cap top 403 to the side wall diameter Φ3 of the brim 402 is in the range of 0.75 to 0.90. This can better adapt to the pipe caps of the water inlet pipe group 2 and the water return pipe group 3 and achieve the desired position of the pipe caps.

[0042] See also Figure 7 and Figure 8The water inlet pipe group 2 includes a water inlet group copper tube 21 and a water inlet group pipe cap 22. The water inlet group copper tube 21 is placed on the water inlet group pipe cap 22. The return water pipe group 3 includes a return water group copper tube 31 and a return water group pipe cap 32. The water inlet group pipe cap 21 and the return water group pipe cap 32 are similar cylindrical structures and both have ear structures A. There is a hole in the middle of the bottom of the water inlet group pipe cap 21 and the return water group pipe cap 32, which is placed above the head positioning rod 40 and contacts the side wall of the cap top 403 of the head positioning rod 40. The head positioning rod 40 is used to limit the water inlet group pipe cap 22 and the return water group pipe cap 32.

[0043] Preferably, the upper portion of the ear positioning rod 50 has a protruding fixing column, and the hole of the ear structure A is placed on the fixing column on the upper portion of the ear positioning rod 50, and the fixing column is used to limit the ear structure.

[0044] The ratio of the diameter Φ1 of the fixing column on the ear positioning rod 50 to the diameter Φ2 of the ear positioning rod 50 is in the range of 0.2 to 0.35, so as to better match the ear structure of the water inlet pipe group 2 and the water return pipe group 3.

[0045] There are two head positioning rods 40, and the ratio of the straight-line distance L2 between their centers to the length L of the base 10 is in the range of 0.40 to 0.60. The ratio of the distance B3 from the center of the circle to the edge of the base 10 along the width direction of the base 10 to the width B of the base 10 is 0.50.

[0046] The ratio of the distance L2 between the two head positioning rods 40 to the bottom plate length L is in the range of 0.30 to 0.50.

[0047] Preferably, the ratio of the sum of the heights H3 of the main body 401, brim 402, and top 403 of the head positioning rod 40 to the total height H2 of the head positioning rod 40 is in the range of 0.70 to 0.85. Furthermore, the ratio of the sum of the heights H3 of the main body 401, brim 402, and top 403 to the total height H2 of the head positioning rod 40 can be 0.75, 0.78, or 0.80.

[0048] See also Figure 6 The upper template 20 is an overall rectangular parallelepiped structure, containing three rows of equally sized through-holes 201 for receiving the positioning pins 60. The distance L5 between the centers of two adjacent through-holes 201 in the row closest to the longer edge of the upper template 20 is 0.06 to 0.09 times the length L8 of the upper template 20, the distance L7 between the centers of the first and third rows of through-holes 201 is 0.70 to 0.90 times the distance L7, and the distance L6 between the centers of the first and second rows of through-holes 201 is 0.80 to 2.20 times the distance L6. This design allows for better positioning of the copper tube, improves the weld quality while securing the copper tube to the cap.

[0049] The water inlet pipe group 2 or the water return pipe group 3 includes a copper pipe group and a pipe cap group. One end of the copper pipe group is placed below the upper template 20. The copper pipe hole is coaxial with the through hole 201 on the upper template 20. The other end of the copper pipe group is placed above the pipe cap group.

[0050] There are multiple positioning pins 60, which pass through the through holes 201 of the upper template 20 and are inserted into one end of the copper tube group close to the upper template 20 to limit the copper tube group.

[0051] For example, during operation, the pipe cap of the water inlet pipe group 2 or the return pipe group 3 is put on the head positioning rod 40, one end of the copper pipe is placed on the pipe cap, and the other end is inserted into the copper pipe through the upper template 20 through the positioning pin 60 to limit the copper pipe, and the connection position between the copper pipe and the pipe cap is welded. After all the required copper pipes are welded, the limiting pin is pulled out and the welded water inlet pipe group 2 or return pipe group 3 components are taken out.

[0052] Through the exemplary display of this embodiment, the utility model can better match the copper pipes required for welding. Through this structure, the welding of the water inlet pipe group 2 and the return pipe group 3 can be better realized, the required position limit can be more accurately realized, the product welding quality and welding efficiency can be improved, and ultimately the performance of the heat exchanger can be improved, while reducing the welding difficulty and ensuring the safety of the welding personnel.

[0053] It will be apparent to those skilled in the art that various modifications and variations can be made to the exemplary embodiments described above without departing from the spirit and scope of the present invention. Therefore, it is intended that the present invention cover modifications and variations of the present invention that fall within the scope of the appended claims and their equivalents.

Claims

1. A welding limiter for welding an inlet pipe assembly and a return pipe assembly, characterized in that: include: Base; upper template; Fixing rod;Ear positioning rod; Head positioning rod; Dowel pins; The base is used to support the entire device. Fixed rods are installed on both edges. There are cylindrical pins above the fixed rods. The upper template is fixedly connected to the fixed rods through the cylindrical pins. The base also includes threaded holes. The ear positioning rod and the head positioning rod are fixed to the base plate through threaded cooperation.

2. A welding limiter according to claim 1, characterized in that: The plane where the bottom plate connects with other components is a rectangle, and the ratio of its width B to length L is in the range of 0.3 to 0.

50. The bottom is used to carry the fixing rod, the ear positioning rod, and the head positioning rod.

3. A welding limiter according to claim 1, characterized in that: There are two fixing rods, the main body of which is a hexagonal columnar structure, and the bottom is provided with cylindrical connecting pins, which are respectively placed near the short sides of the base, and fixedly matched with the base through the connecting pins. The ratio of the distance L3 between the centers of the two fixing rods to the length L of the base is in the range of 0.80 to 0.95, and the ratio of the length H1 of the hexagonal column part of the fixing rod to the total length H of the fixing rod is in the range of 0.78 to 0.

95.

4. A welding limiter according to claim 1, characterized in that: The head positioning rod includes a main body, a brim, and a top. The lower end of the main body has a threaded column, which is connected to the base through a thread. The brim is placed on the upper part of the main body, and the top is placed on the upper part of the brim, which is used to connect the bottom of the water inlet pipe group and the return pipe group. The ratio of the diameter of the side wall of the top of the cap Φ4 to the diameter of the side wall of the brim Φ3 is in the range of 0.75 to 0.

90.

5. A welding limiter according to claim 4, characterized in that: The water inlet pipe group includes a water inlet group copper tube and a water inlet group pipe cap, and the water inlet group copper tube is placed on the water inlet group pipe cap. The return water pipe group includes a return water group copper tube and a return water group pipe cap. The water inlet group pipe cap and the return water group pipe cap are both similar cylindrical structures and have ear structures. There is a hole in the middle of the bottom of the water inlet group pipe cap and the return water group pipe cap, which is placed above the head positioning rod and contacts the cap top side wall of the head positioning rod. The head positioning rod is used to limit the water inlet group pipe cap and the return water group pipe cap.

6. A welding limiter according to claim 5, characterized in that: The upper portion of the ear positioning rod is provided with a protruding fixing column, the hole of the ear structure is placed on the fixing column on the upper portion of the ear positioning rod, and the fixing column is used to limit the position of the ear structure.

7. A welding limiter according to claim 1 or 4, characterized in that: There are two head positioning rods, and the ratio of the straight-line distance L2 between their centers to the base length L is in the range of 0.40 to 0.

60. The ratio of the distance B3 from the center to the base edge along the base width direction to the base width B is in the range of 0.

50.

8. The welding limiter according to claim 1, wherein: The upper template has a rectangular structure as a whole, and contains three rows of through holes of the same size. The through holes are used to place the positioning pins. The ratio of the distance L5 between the centers of each adjacent through holes in the row close to the longer edge of the upper template to the length L8 of the upper template is in the range of 0.06 to 0.09, the ratio to the distance L7 between the centers of the through holes in the first and third rows is in the range of 0.70 to 0.90, and the ratio to the distance L6 between the centers of the through holes in the first and second rows is in the range of 0.80 to 2.

20.

9. The welding limiter according to claim 1, wherein: The water inlet pipe group or the water return pipe group includes a copper pipe group and a pipe cap group. One end of the copper pipe group is placed below the upper template, the copper pipe hole is coaxial with the through hole on the upper template, and the other end of the copper pipe group is placed above the pipe cap group.

10. A welding limiter according to claim 1 or 9, characterized in that: There are multiple positioning pins, which pass through the through holes of the upper template and are inserted into one end of the copper tube group close to the upper template to limit the copper tube group.

Images