A bent connector welding tool and use method thereof

Abstract

The present invention discloses a bent connector welding tool and a method of using the same, belonging to the technical field of connector welding. The bent connector welding tool comprises a columnar shell and a through hole arranged in the middle of the columnar shell, wherein: a side hole and an exit slot are provided on the outer wall of the columnar shell, the axis of the side hole is perpendicular to and intersects with the axis of the columnar shell, the axis of the exit slot is parallel to the axis of the columnar shell, and the exit slot is connected to the side hole. The present invention adopts a novel structure to solve the technical problem that the solder of the existing bent stepless connector easily flows into the shell cavity during gold removal and welding, and utilizes the special thermal expansion and contraction of the tool to avoid the solder from flowing into the shell cavity and causing unnecessary scrapping. The gold removal qualified rate of the tool is more than 90%, and the tool is used again for outer conductor welding after gold removal, with a qualified rate of more than 90%.

Description

Technical Field

[0001] The invention belongs to the technical field of connector welding, and in particular relates to a bent connector welding tool and a use method thereof. Background Art

[0002] As the market matures and technology develops, customers have an increasing demand for semi-rigid cable assemblies, and the requirements for welding are becoming more and more stringent. The Cable and Components Division has the following problems when processing cable assemblies containing curved connector shells without steps such as SMA-JWB2: 1) When removing gold from the outer conductor of the connector, the solder of the shell without a step structure is easy to flow into the shell cavity, causing some connectors to be scrapped; 2) When welding the outer conductor of the connector, the solder of the shell without a step structure is easy to flow into the shell cavity, and the excess solder cannot be removed, which poses a quality risk and affects the performance indicators of the finished product. At present, the outer shell of curved connectors such as SMA-JWB2 has no step structure, and there are no special tooling and solutions for removing gold and welding the outer conductors of their cable assemblies. Summary of the invention

[0003] In view of the above technical problems, the present invention provides a bent connector welding tool and a method of using the same. The new structure is adopted to solve the technical problem that the solder of the existing bent stepless connector easily flows into the shell cavity during gold removal and welding. The special thermal expansion and contraction of the tool is utilized to prevent the solder from flowing into the shell cavity and causing unnecessary scrapping. The gold removal pass rate of the tool is over 90%. After gold removal, the tool is used for outer conductor welding with a pass rate of over 90%.

[0004] The present invention solves the above problems by the following technical means:

[0005] A bent connector welding tool, characterized in that it includes a cylindrical shell and a through hole arranged in the middle of the cylindrical shell, wherein: a side hole and an exit groove are opened on the outer wall of the cylindrical shell, the axis of the side hole is perpendicular to and intersects with the axis of the cylindrical shell, the axis of the exit groove is parallel to the axis of the cylindrical shell, and the exit groove is connected to the side hole.

[0006] Preferably, the diameter of the side hole is consistent with the width of the exit groove, and the exit groove is connected at the diameter of the side hole.

[0007] Preferably, the diameter of the cylindrical shell is 3.5-5 mm.

[0008] Preferably, the diameter of the through hole is 1.5-2.5 mm.

[0009] Preferably, the diameter of the side hole is 1.5-2.5 mm.

[0010] Preferably, the width of the exit slot is 1.5-2.5 mm.

[0011] Preferably, the columnar shell is made of polytetrafluoroethylene.

[0012] The method for using the above-mentioned curved connector welding tool includes the following steps:

[0013] 1) Insert the end of the curved connector welding tool with the side hole and the exit groove into the inner cavity of the curved shell of the connector to ensure that the cylindrical shell fits tightly against the inner cavity wall;

[0014] 2) Rotate the bent connector welding tooling to align the side hole with the inner hole of the connector's outer conductor installation channel, and then insert the outer conductor into the outer conductor installation channel and the side hole in sequence to ensure that the end of the outer conductor is connected to the inner conductor;

[0015] 3) Use a resistance welding machine to remove the gold from the outer conductor. After the gold is removed, the solder is evenly attached to the inner wall of the outer conductor installation channel. During the gold removal process, the side holes can effectively prevent solder or impurities from flowing into the inner cavity;

[0016] 4) Use a resistance welding machine to weld the outer conductor installation channel and the outer conductor. During the welding process, the side holes can effectively prevent solder or impurities from flowing into the inner cavity;

[0017] 5) After welding is completed, rotate the bent connector welding tool to allow the outer conductor to enter the exit groove and pull out the bent connector welding tool.

[0018] The bent connector welding tool and the use method thereof of the present invention have the following beneficial effects:

[0019] (1) The bent connector welding tooling comprises a cylindrical shell and a through hole arranged in the middle of the cylindrical shell, wherein: a side hole and an exit groove are opened on the outer wall of the cylindrical shell, the axis of the side hole is perpendicular to and intersects with the axis of the cylindrical shell, the axis of the exit groove is parallel to the axis of the cylindrical shell, the exit groove is connected with the side hole, and the design of the exit groove and the side hole is easy to exit and simple to operate.

[0020] (2) The present invention adopts a novel structure. The tooling is made of polytetrafluoroethylene material. The special thermal expansion and contraction of the tooling is used to prevent the solder from flowing into the shell cavity and causing unnecessary scrapping. The technical problem of the existing bent stepless connector that the solder is easy to flow into the shell cavity during gold removal and welding is solved. The gold removal pass rate of the tooling is more than 90%. After gold removal, the tooling is used for outer conductor welding with a pass rate of more than 90%. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solution of the present invention, the drawings required for use in the implementation mode will be briefly introduced below. Obviously, the drawings described below are only some implementation modes of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is a schematic diagram of the internal structure of the present invention;

[0023] Figure 2 It is a schematic diagram of the external structure of the present invention;

[0024] Figure 3 It is a schematic diagram of the application of the present invention.

[0025] Among them, 1-columnar shell, 2-through hole, 3-side hole, 4-exit slot, 5-connector, 501-curved shell, 502-inner cavity, 503-outer conductor installation channel, 504-inner conductor installation channel, 6-outer conductor, 7-inner conductor, 8-welding point. DETAILED DESCRIPTION

[0026] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. The terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0027] The present invention will be described in detail below with reference to the accompanying drawings.

[0028] Embodiment 1

[0029] like Figure 1 and Figure 2As shown, a new type of bending welding tool is designed for the SMA-JWB2 and other curved connector shells without steps to remove gold and solder easily flows into the shell cavity during welding. The bending connector welding tool comprises a columnar shell 1 and a through hole 2 arranged in the middle of the columnar shell 1, wherein: a side hole 3 and an exit groove 4 are opened on the outer wall of the columnar shell 1, the axis of the side hole 3 is perpendicular to and intersects with the axis of the columnar shell 1, the axis of the exit groove 4 is parallel to the axis of the columnar shell 1, and the exit groove 4 is connected with the side hole 3.

[0030] Specifically, the diameter of the side hole 3 is consistent with the width of the exit groove 4, and the exit groove 4 is connected at the diameter of the side hole 3. The columnar housing 1 is made of polytetrafluoroethylene material, which can utilize the principle of thermal expansion and contraction to prevent solder from flowing into the housing cavity and causing unnecessary scrapping.

[0031] It should be noted that the diameter D1 of the columnar shell 1 is 3.5-5 mm, the diameter D2 of the through hole 2 is 1.5-2.5 mm, the diameter D3 of the side hole 3 is 1.5-2.5 mm, and the width D4 of the exit groove 4 is 1.5-2.5 mm.

[0032] Embodiment 2

[0033] like Figure 3 As shown, the method of using the curved connector welding tool includes the following steps:

[0034] 1) Insert one end of the curved connector welding tool with the side hole 3 and the exit slot 4 into the inner cavity 502 of the curved housing 501 of the connector 5, ensuring that the cylindrical housing 1 fits tightly against the wall of the inner cavity 502;

[0035] 2) Rotate the bent connector welding tool to align the side hole 3 with the inner exit hole of the outer conductor installation channel 503 of the connector 5, and then insert the outer conductor 6 into the outer conductor installation channel 503 and the side hole 3 in sequence to ensure that the end of the outer conductor 6 is connected to the inner conductor 7;

[0036] 3) Use a resistance welding machine to remove gold from the outer conductor 6. After the gold removal, the solder is evenly attached to the inner wall of the outer conductor installation channel 503. During the gold removal process, the side hole 3 can effectively prevent solder or impurities from flowing into the inner cavity 502;

[0037] In this embodiment, five SMA curved welding tools and SMA-JWB2 connectors that have been verified to be qualified are taken, the curved welding tools are inserted into the connector cavity, and then the curved outer conductor is de-golded using a resistance welding machine. After de-golding, the solder is evenly attached to the inner wall of the outer conductor cavity, and no solder flows into the connector cavity using an electron microscope.

[0038] 4) Use a resistance welding machine to weld the outer conductor installation channel 503 and the outer conductor 6. During the welding process, the side hole 3 can effectively prevent solder or impurities from flowing into the inner cavity 502;

[0039] In this embodiment, five SMA bent welding tools and SMA-JWB2 connectors that have passed the verification are taken, and the outer conductor of the connector is welded using the same method. After welding, the appearance of the solder joint meets the technical requirements. An electron microscope is used to observe that no solder flows into the connector cavity, and an X-ray inspection is performed. The welding area meets the requirements and there is no excess material such as tin slag and rosin in the connector cavity.

[0040] 5) After welding is completed, the bent connector welding tool is rotated to allow the outer conductor 6 to enter the exit groove 4, and the bent connector welding tool is pulled out.

[0041] It should be noted that the connector 5 is a curved structure, and its curved shell 501 is L-shaped. The middle part of the curved shell 501 is an inner cavity 502, one end of the curved shell 501 is an outer conductor installation channel 503, and the other end of the curved shell 501 is an inner conductor installation channel 504. The outer conductor 6 is installed in the outer conductor installation channel 503 through the welding point 8, and the inner conductor 7 is installed in the inner conductor installation channel 504.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for using a curved connector welding tool, characterized in that: The welding tool comprises a columnar shell (1) and a through hole (2) arranged in the middle of the columnar shell (1), wherein: The outer wall of the columnar shell (1) is provided with a side hole (3) and an exit groove (4); the axis of the side hole (3) is perpendicular to and intersects with the axis of the columnar shell (1); the axis of the exit groove (4) is parallel to the axis of the columnar shell (1); and the exit groove (4) is connected to the side hole (3); The method of use includes the following steps: 1) inserting one end of the curved connector welding tool with the side hole (3) and the exit groove (4) into the inner cavity (502) of the curved shell (501) of the connector (5), ensuring that the columnar shell (1) is tightly fitted with the wall of the inner cavity (502); 2) rotating the bent connector welding tool to align the side hole (3) with the inner exit hole of the outer conductor installation channel (503) of the connector (5), and then inserting the outer conductor (6) into the outer conductor installation channel (503) and the side hole (3) in sequence, ensuring that the end of the outer conductor (6) is connected to the inner conductor (7); 3) using a resistance welding machine to remove gold from the outer conductor (6); after the gold removal, the solder is evenly attached to the inner wall of the outer conductor installation channel (503); during the gold removal process, the side hole (3) can effectively prevent solder or impurities from flowing into the inner cavity (502); 4) using a resistance welding machine to perform welding processing on the outer conductor installation channel (503) and the outer conductor (6), during which the side hole (3) can effectively prevent solder or impurities from flowing into the inner cavity (502); 5) After welding is completed, the bent connector welding tool is rotated to allow the outer conductor (6) to enter the exit groove (4), and the bent connector welding tool is pulled out.

2. The method for using the bent connector welding tool according to claim 1, characterized in that: The diameter of the side hole (3) is consistent with the width of the exit groove (4), and the exit groove (4) is connected at the diameter of the side hole (3).

3. The method for using the bent connector welding tool according to claim 1, characterized in that: The diameter (D1) of the columnar shell (1) is 3.5-5 mm.

4. The method for using the bent connector welding tool according to claim 1, characterized in that: The diameter (D2) of the through hole (2) is 1.5-2.5 mm.

5. The method for using the bent connector welding tool according to claim 1, characterized in that: The diameter (D3) of the side hole (3) is 1.5-2.5 mm.

6. The method for using the bent connector welding tool according to claim 1, characterized in that: The width (D4) of the exit groove (4) is 1.5-2.5 mm.

7. The method for using the bent connector welding tool according to claim 1, characterized in that: The columnar shell (1) is made of polytetrafluoroethylene.

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