Positioning mechanism suitable for welding connection of waveguide tube and other parts

Abstract

The invention discloses a positioning mechanism suitable for welding connection of a waveguide tube and other parts, which comprises a to-be-connected waveguide tube and a connecting part, when the to-be-connected waveguide tube and the connecting part are connected in a welding manner, the end part of the to-be-connected waveguide tube extends into a connecting hole of the connecting part; the outer side wall of the to-be-connected waveguide tube abuts against the first positioning table, so that the distance between the outer side wall of the to-be-connected waveguide tube and the side wall of the connecting hole is uniform, and positioning of the to-be-connected waveguide tube and the connecting part in the radial direction is achieved. When the axial end face of one end, extending into the connecting hole, of the to-be-connected waveguide tube abuts against the second positioning table, the to-be-connected waveguide tube is inserted in place, and positioning of the to-be-connected waveguide tube and the connecting part in the axial direction is achieved. The welding quality of the waveguide tube to be connected and the connecting part is effectively improved, and the defects that in the prior art, assembly positioning is insufficient, the production process is complex, and air holes exist in the welding seam quality are overcome.

Description

Technical Field

[0001] The invention relates to the technical field of microwave communication equipment and peripheral supporting facilities thereof, and in particular to a positioning mechanism suitable for welding and connecting a waveguide tube with other components. Background Art

[0002] In the field of microwave communications, waveguides are often connected to flanges to achieve connections between different waveguides or with other devices.

[0003] At present, the most commonly used connection method between waveguides and flanges in the industry is manual brazing. The traditional welding positioning method has the following disadvantages in actual production: before welding, auxiliary tooling is needed to ensure the assembly position of parts and control the weld gap; after the parts are assembled, a closed cavity is easily formed at the weld, resulting in poor solder fluidity during welding, and easy accumulation to form welding defects such as weld nodules and pores; for standard profile waveguides, the waveguide and flange matching position need to be finely processed before assembly and welding, which increases production costs; the relative position of the flange and the waveguide after welding is difficult to ensure and other defects. Summary of the invention

[0004] The purpose of the present invention is to provide a positioning mechanism suitable for welding connection of waveguide tubes with other components, so as to solve the problems existing in the above-mentioned related technologies, reduce the difficulty of positioning when welding connection of waveguide tubes with other components, and at the same time improve the positioning accuracy of waveguide tubes with other components, ensure that the gap between the waveguide tube and other components is uniform, thereby improving the quality of welding connection.

[0005] To achieve the above object, the present invention provides the following solutions:

[0006] The present invention provides a positioning mechanism suitable for welding a waveguide tube to other components, comprising:

[0007] The waveguide to be connected;

[0008] A connecting component, wherein the connecting component has a connecting hole, and one end of the waveguide to be connected can be inserted into the connecting hole; a first positioning platform is provided on the side wall of the connecting hole, and when the waveguide to be connected is inserted into the connecting hole, the first positioning platform can abut against the outer side wall of the waveguide to be connected, so that the spacing between the side wall of the connecting hole and the outer side wall of the waveguide to be connected is uniform, thereby forming a weld when the waveguide to be connected is welded to the connecting component; the connecting component is also provided with a second positioning platform, and when the waveguide to be connected is inserted into the connecting hole, the second positioning platform can abut against the axial end face of the waveguide to be connected, thereby realizing the positioning of the axial position of the waveguide to be connected when the waveguide to be connected is welded to the connecting component.

[0009] Preferably, the shape of the abutment surface between the first positioning platform and the waveguide to be connected matches the shape of the outer side wall of the waveguide to be connected.

[0010] Preferably, there are a plurality of the first positioning platforms, and the first positioning platforms are evenly distributed circumferentially around the axis of the waveguide to be connected.

[0011] Preferably, the waveguide tube to be connected is a rectangular tube, the shape of the connecting hole is adapted to the shape of the waveguide tube to be connected, and the first positioning platform is provided on the four side walls of the connecting hole.

[0012] Preferably, the height of the first positioning platform is smaller than the axial height of the connecting hole, and the width of the first positioning platform is smaller than the side wall width of the connecting hole.

[0013] Preferably, an end of the connection hole that allows the waveguide to be connected to be inserted is an insertion port, and the first positioning platform and the second positioning platform are both located at an end of the connection hole away from the insertion port.

[0014] Preferably, the connecting hole comprises a main section and an expanded diameter section, the expanded diameter section is located at one end of the insertion port, and when the waveguide to be connected is inserted into the connecting hole, a space allowing solder to be filled is formed between the outer side wall of the waveguide to be connected and the side wall of the expanded diameter section.

[0015] Preferably, the connecting component further has a connecting groove, the connecting groove is located at an end of the connecting hole away from the insertion port, and the second positioning platform is located in the connecting groove.

[0016] Preferably, the connecting hole is communicated with the connecting groove and the two are coaxially arranged, and the radial cross-sectional area of ​​the connecting groove is larger than the radial cross-sectional area of ​​the connecting hole; and the number of the second positioning platforms is plural.

[0017] Preferably, the first positioning platform and the second positioning platform both have arc transition surfaces.

[0018] Compared with the related art, the present invention has achieved the following technical effects: the positioning mechanism of the present invention, which is suitable for welding and connecting a waveguide tube with other components, comprises a waveguide tube to be connected and a connecting component, the connecting component having a connecting hole, and one end of the waveguide tube to be connected can be inserted into the connecting hole; a first positioning platform is provided on the side wall of the connecting hole, and when the waveguide tube to be connected is inserted into the connecting hole, the first positioning platform can abut against the outer side wall of the waveguide tube to be connected, so that the spacing between the side wall of the connecting hole and the outer side wall of the waveguide tube to be connected is uniform, thereby forming a weld when the waveguide tube to be connected is welded to the connecting component; the connecting component is also provided with a second positioning platform, and when the waveguide tube to be connected is inserted into the connecting hole, the second positioning platform can abut against the axial end face of the waveguide tube to be connected, thereby realizing the positioning of the axial position of the waveguide tube to be connected when the waveguide tube to be connected is welded to the connecting component.

[0019] The positioning mechanism of the present invention is suitable for welding and connecting a waveguide tube with other components. When the waveguide tube to be connected is connected with the connecting component by welding, the end of the waveguide tube to be connected is inserted into the connecting hole of the connecting component, and the outer side wall of the waveguide tube to be connected is abutted against the first positioning platform, so that the spacing between the outer side wall of the waveguide tube to be connected and the side wall of the connecting hole is uniform, so as to realize the radial positioning of the waveguide tube to be connected and the connecting component; when the axial end face of one end of the waveguide tube to be connected extending into the connecting hole is abutted against the second positioning platform, the waveguide tube to be connected is inserted into place, so as to realize the axial positioning of the waveguide tube to be connected and the connecting component. The waveguide tube to be connected and the connecting component are welded, and the gap between the side wall of the connecting hole and the outer side wall of the waveguide tube to be connected forms a weld. The positioning mechanism of the present invention can realize the axial and radial positioning of the waveguide tube to be connected and the connecting component without external parts, reduces the positioning difficulty, improves the positioning accuracy, and thus ensures the welding reliability and stability of the waveguide tube to be connected and the connecting component, effectively improves the welding quality of the waveguide tube to be connected and the connecting component, and improves the defects of insufficient assembly positioning, complex production process and pores in weld quality existing in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or related technologies, the drawings required for use in the embodiments will be briefly introduced below. 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 creative work.

[0021] Figure 1 It is a schematic diagram of the isometric structure of a positioning mechanism suitable for welding a waveguide and other components disclosed in an embodiment of the present invention;

[0022] Figure 2A schematic diagram of an axonometric structure at other angles of a positioning mechanism suitable for welding a waveguide tube to other components disclosed in an embodiment of the present invention;

[0023] Figure 3 It is an enlarged schematic diagram of a part of the structure of a positioning mechanism suitable for welding a waveguide and other components disclosed in an embodiment of the present invention;

[0024] Figure 4 It is a cross-sectional schematic diagram of a partial structure of a positioning mechanism suitable for welding a waveguide and other components disclosed in an embodiment of the present invention;

[0025] Figure 5 This is a schematic structural diagram of a connecting component of a positioning mechanism suitable for welding a waveguide tube to other components disclosed in an embodiment of the present invention.

[0026] In the figure: 1. waveguide to be connected; 2. connecting component; 3. connecting hole; 4. first positioning platform; 5. second positioning platform; 6. main body section; 7. diameter expansion section; 8. connecting groove. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] The purpose of the present invention is to provide a positioning mechanism suitable for welding connection of waveguide tubes with other components, so as to solve the problems existing in the above-mentioned related technologies, reduce the difficulty of positioning when welding connection of waveguide tubes with other components, and at the same time improve the positioning accuracy of waveguide tubes with other components, ensure that the gap between the waveguide tube and other components is uniform, thereby improving the quality of welding connection.

[0029] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] Embodiment 1

[0031] This embodiment provides a positioning mechanism suitable for welding and connecting a waveguide with other components. Figure 1-Figure 5, including a waveguide tube 1 to be connected and a connecting component 2, the connecting component 2 having a connecting hole 3, one end of the waveguide tube 1 to be connected can be inserted into the connecting hole 3; a first positioning platform 4 is provided on the side wall of the connecting hole 3, when the waveguide tube 1 to be connected is inserted into the connecting hole 3, the first positioning platform 4 can abut against the outer side wall of the waveguide tube 1 to be connected, so that the spacing between the side wall of the connecting hole 3 and the outer side wall of the waveguide tube 1 to be connected is uniform, thereby forming a weld when the waveguide tube 1 to be connected and the connecting component 2 are welded together; the connecting component 2 is also provided with a second positioning platform 5, when the waveguide tube 1 to be connected is inserted into the connecting hole 3, the second positioning platform 5 can abut against the axial end face of the waveguide tube 1 to be connected, thereby realizing the positioning of the axial position of the waveguide tube 1 to be connected when the waveguide tube 1 to be connected and the connecting component 2 are welded together.

[0032] The positioning mechanism of the present invention is suitable for welding and connecting a waveguide tube to another component. When the waveguide tube 1 to be connected is connected to the connecting component 2 by welding, the end of the waveguide tube 1 to be connected is inserted into the connecting hole 3 of the connecting component 2, and the outer wall of the waveguide tube 1 to be connected abuts against the first positioning platform 4, so that the spacing between the outer wall of the waveguide tube 1 to be connected and the side wall of the connecting hole 3 is uniform, so that the radial direction positioning of the waveguide tube 1 to be connected and the connecting component 2 is achieved; when the axial end face of one end of the waveguide tube 1 to be connected extending into the connecting hole 3 abuts against the second positioning platform 5, the waveguide tube 1 to be connected is inserted into place, so that the axial direction positioning of the waveguide tube 1 to be connected and the connecting component 2 is achieved. When the waveguide tube 1 to be connected and the connecting component 2 are welded, the gap between the side wall of the connecting hole 3 and the outer wall of the waveguide tube 1 to be connected forms a weld. The positioning mechanism of the present invention can realize axial and radial positioning of the waveguide 1 to be connected and the connecting component 2 without the need for external parts, thereby reducing the difficulty of positioning and improving the positioning accuracy, thereby ensuring the welding reliability and stability of the waveguide 1 to be connected and the connecting component 2, effectively improving the welding quality of the waveguide 1 to be connected and the connecting component 2, and improving the defects of the prior art such as insufficient assembly positioning, complicated production process and porosity in weld quality.

[0033] In practical applications, the number of first positioning platforms 4 can be set to be multiple, and multi-point positioning can be performed along the circumference of the waveguide 1 to be connected, so as to further improve the positioning accuracy, ensure that the gap between the waveguide 1 to be connected and the connecting component 2 is uniform, and then ensure the consistency of the weld width. The number and distribution of the first positioning platforms 4 can be adjusted according to the shape and specifications of the waveguide 1 to be connected. When the shape of the waveguide 1 to be connected is regular, the first positioning platforms 4 can be set to be evenly distributed around the axis of the waveguide 1 to be connected. While accurately positioning, it can also improve the force uniformity of the waveguide 1 to be connected and the connecting component 2. During the welding process, the structural stability of the waveguide 1 to be connected and the connecting component 2 is ensured, thereby further improving the welding quality.

[0034] In this specific embodiment, the waveguide tube 1 to be connected is a rectangular tube, the shape of the connecting hole 3 is adapted to the shape of the waveguide tube 1 to be connected, a first positioning platform 4 is provided on the four side walls of the connecting hole 3, the thickness of the first positioning platform 4 is reasonably set, the waveguide tube 1 to be connected is inserted into the connecting hole 3 of the connecting component 2, the first positioning platform 4 is abutted against the outer wall of the waveguide tube 1 to be connected, and the gap between the waveguide tube 1 to be connected and the connecting component 2 is uniform, thereby realizing the radial positioning of the waveguide tube 1 to be connected and the connecting component 2. It needs to be explained here that the gap between the waveguide tube 1 to be connected and the connecting component 2 is uniform, including the positioning situation that the axis of the waveguide tube 1 to be connected coincides with the axis of the connecting hole 3, and also including the positioning situation that the axis of the waveguide tube 1 to be connected is parallel to the axis of the connecting hole 3, that is, the spacing between different outer walls of the waveguide tube 1 to be connected and the corresponding side walls of the connecting hole 3 does not have to be the same. In practical applications, the spacing between the outer wall of the waveguide tube 1 to be connected and the side wall of the connecting hole 3 can be adjusted according to specific welding requirements. For example, the spacing between the wider outer wall of the rectangular tubular structure of the waveguide tube 1 to be connected and the side wall of the connecting hole 3 is a, and the spacing between the narrower outer wall of the waveguide tube 1 to be connected and the side wall of the connecting hole 3 is b. The thickness of each first positioning platform 4 is adjusted to meet the positioning requirements of waveguide tubes 1 to be connected of different shapes, meet different connection conditions and welding requirements, and improve the flexibility and adaptability of the positioning mechanism.

[0035] Specifically, the height of the first positioning platform 4 is smaller than the axial height of the connecting hole 3, providing sufficient space for the solder to flow in, ensuring that the weld is uniform and firm; and the width of the first positioning platform 4 is smaller than the side wall width of the connecting hole 3, avoiding the first positioning platform 4 from blocking the connecting hole 3, so that the weld area after the waveguide 1 to be connected and the connecting component 2 are positioned is in an open cavity state, so as to effectively improve the fluidity of the solder during the welding process, reduce the generation of defects such as welding pores at the weld, and ensure the welding quality of the product and the consistency of the weld size.

[0036] Among them, the end of the connecting hole 3 that allows the waveguide tube 1 to be connected to be inserted is the insertion port, and the first positioning platform 4 and the second positioning platform 5 are both located at the end of the connecting hole 3 away from the insertion port. While accurately positioning, operating space is reserved for solder filling to ensure smooth soldering operation.

[0037] It should also be noted that, in this specific embodiment, the connecting hole 3 includes a main section 6 and an expanded diameter section 7. The expanded diameter section 7 is located at one end of the insertion port. The aperture of the expanded diameter section 7 is larger than the aperture of the main section 6. Therefore, when the waveguide 1 to be connected is inserted into the connecting hole 3, a space allowing solder to be filled is formed between the outer wall of the waveguide 1 to be connected and the side wall of the expanded diameter section 7, thereby ensuring smooth solder flow and improving welding quality.

[0038] At the same time, the connecting component 2 also has a connecting groove 8, which is located at the end of the connecting hole 3 away from the insertion port, and the second positioning platform 5 is located in the connecting groove 8. The connecting groove 8 can also accommodate excess solder during the welding process to prevent the solder from flowing into the inner cavity of the waveguide 1 to be connected and affecting the product performance.

[0039] In this specific embodiment, the connection hole 3 is connected to the connection groove 8 and the two are coaxially arranged to improve the structural stability of the connection component 2. The radial cross-sectional area of ​​the connection groove 8 is larger than the radial cross-sectional area of ​​the connection hole 3, ensuring that the connection groove 8 can receive excess solder. The number of second positioning platforms 5 is multiple, which can enhance the axial positioning stability of the waveguide 1 to be connected. In this specific embodiment, two second positioning platforms 5 are set, and the two second positioning platforms 5 are symmetrically arranged with the axis of the positioning hole as the symmetry axis. In actual applications, the number and distribution of the second positioning platforms 5 can be adjusted according to the specific structure of the waveguide 1 to be connected and the connection component 2.

[0040] In other specific embodiments of the present invention, the first positioning platform 4 and the second positioning platform 5 both have arc transition surfaces, which can protect the waveguide 1 to be connected when it is inserted, and avoid scratches and damage to the waveguide 1 to be connected.

[0041] In this specific embodiment, the connecting component 2 is a flange. In practical applications, the connecting component 2 can also be a connecting frame or a connecting structure of other equipment.

[0042] The positioning mechanism of the present invention, which is suitable for welding and connecting a waveguide tube with other components, can effectively improve the defects of the prior art, such as insufficient assembly positioning, complicated production process, and air holes in the weld quality; it greatly improves the reliability and stability of the welding quality between the waveguide tube and the connecting component 2; for the welding of a standard profile waveguide tube and a flange plate, there is no need to perform secondary processing on the matching position of the waveguide tube and the flange plate, and the flange can be directly assembled and welded, which greatly improves the product production efficiency and effectively reduces the product production cost.

[0043] Embodiment 2

[0044] The positioning mechanism of this embodiment is suitable for welding and connecting the waveguide tube to other components. The shape of the abutment surface between the first positioning platform 4 and the waveguide tube 1 to be connected matches the shape of the outer wall of the waveguide tube 1 to be connected. In this specific embodiment, when the waveguide tube 1 to be connected is a circular tube or an elliptical tube, the abutment surface between the first positioning platform 4 and the waveguide tube 1 to be connected is a matching arc surface. The thickness of the first positioning platform 4 is reasonably set. The abutment between the waveguide tube 1 to be connected and the first positioning platform 4 can realize the radial positioning of the waveguide tube 1 to be connected and the connecting component 2. The surface contact between the waveguide tube 1 to be connected and the first positioning platform 4 increases the contact area and improves the positioning stability.

[0045] The other structures of the positioning mechanism of this embodiment suitable for welding the waveguide tube to other components are the same as those of the first embodiment and will not be described in detail here.

[0046] Embodiment 3

[0047] This embodiment provides a method for welding a waveguide and a flange, using the positioning mechanism of the first embodiment suitable for welding the waveguide and other components, and specifically includes the following steps:

[0048] Cutting preparation, cutting raw materials into the size required by the process;

[0049] Clean and zero the machine tool, make sure the machine tool is clean, clamp the blank, and then perform zeroing;

[0050] According to the pre-written program, the flange size is processed, and a 0.5mm processing allowance is left on the section 5 of the second positioning table;

[0051] Cut the waveguide to the required length and remove sharp edge burrs;

[0052] The waveguide and flange are cleaned with ultrasonic waves, and then the flange is press-fitted onto the waveguide according to the design requirements;

[0053] Before brazing, first use hydrochloric acid to degrease and clean the surface of the press-fitted assembly, then apply flux around the weld to ensure that the flux is fully filled during welding, place the assembled assembly vertically on a plane along the axial positioning surface of the flange, then heat the part to be welded, and add flux when the temperature reaches the required level to ensure that the weld is full, without bubbles, cold welds, or unevenness;

[0054] After welding, cool it at room temperature. After cooling, put the waveguide into 15% citric acid for 20 minutes (to clean the flux on the surface). After cleaning with citric acid, clean it with deionized water and let it dry.

[0055] Finish the flange mounting openings and further remove excess solder residue;

[0056] After deburring and blunting the edges of the processed surface, ultrasonic cleaning can be performed.

[0057] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A positioning mechanism suitable for welding a waveguide tube to other components, characterized in that: include: The waveguide to be connected; A connecting component, wherein the connecting component has a connecting hole, and one end of the waveguide to be connected can extend into the connecting hole; The connecting hole has a first positioning platform on the side wall, and when the waveguide to be connected is inserted into the connecting hole, the first positioning platform can abut against the outer side wall of the waveguide to be connected, so that the spacing between the side wall of the connecting hole and the outer side wall of the waveguide to be connected is uniform, thereby forming a weld when the waveguide to be connected is welded to the connecting component; the connecting component is also provided with a second positioning platform, and when the waveguide to be connected is inserted into the connecting hole, the second positioning platform can abut against the axial end face of the waveguide to be connected, thereby realizing the positioning of the axial position of the waveguide to be connected when the waveguide to be connected is welded to the connecting component.

2. The positioning mechanism suitable for welding a waveguide tube to other components according to claim 1, characterized in that: The shape of the abutting surface between the first positioning platform and the waveguide to be connected matches the shape of the outer side wall of the waveguide to be connected.

3. The positioning mechanism suitable for welding a waveguide tube to other components according to claim 1, characterized in that: There are multiple first positioning platforms, and the first positioning platforms are evenly distributed around the axis of the waveguide to be connected.

4. The positioning mechanism suitable for welding a waveguide tube to other components according to claim 1, characterized in that: The waveguide tube to be connected is a rectangular tube, the shape of the connecting hole is adapted to the shape of the waveguide tube to be connected, and the first positioning platform is arranged on the four side walls of the connecting hole.

5. The positioning mechanism suitable for welding a waveguide tube to other components according to claim 4, characterized in that: The height of the first positioning platform is smaller than the axial height of the connecting hole, and the width of the first positioning platform is smaller than the side wall width of the connecting hole.

6. The positioning mechanism suitable for welding a waveguide tube to other components according to claim 1, characterized in that: An end of the connection hole that allows the waveguide to be connected to be inserted is an insertion port, and the first positioning platform and the second positioning platform are both located at an end of the connection hole away from the insertion port.

7. The positioning mechanism suitable for welding a waveguide tube to other components according to claim 6, characterized in that: The connecting hole includes a main body section and an expanded diameter section, wherein the expanded diameter section is located at one end of the insertion port. When the waveguide to be connected is inserted into the connecting hole, a space allowing solder to be filled is formed between the outer side wall of the waveguide to be connected and the side wall of the expanded diameter section.

8. The positioning mechanism suitable for welding a waveguide tube to other components according to claim 6, characterized in that: The connecting component further comprises a connecting groove, the connecting groove is located at an end of the connecting hole away from the insertion port, and the second positioning platform is located in the connecting groove.

9. The positioning mechanism suitable for welding a waveguide tube to other components according to claim 8, characterized in that: The connecting hole is communicated with the connecting groove and the two are coaxially arranged, the radial cross-sectional area of ​​the connecting groove is larger than the radial cross-sectional area of ​​the connecting hole; and the number of the second positioning platforms is multiple.

10. The positioning mechanism suitable for welding a waveguide tube to other components according to any one of claims 1 to 9, characterized in that: The first positioning platform and the second positioning platform both have arc transition surfaces.

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