Rapid inspection welding device for connector

Abstract

The utility model relates to the field of welding inspection devices, and discloses a rapid inspection welding device of a connector, which comprises a detection part and a magnetization part, the main body of the magnetization part is a hollow column, and a magnetic induction coil tightly attached to the inner wall of the hollow column is designed in the lower part of the hollow column. The magnetic induction coils are in circuit connection through wires. The magnetization part is arranged on the outer side of the detection part in a sleeving mode, a liquid tank is designed and installed below the limiting column, the liquid tank is made of a transparent material, magnetic suspension liquid is contained in the liquid tank, a small hole with the same specification as a contact piece of the connector is designed in the bottom of the liquid tank, a cover plate is installed in the liquid tank, and the magnetic suspension liquid is arranged in the cover plate. According to the equipment, the contact part of the connector is magnetized by utilizing an electromagnetic induction principle, and then the distribution condition of magnetic powder is observed through the transparent liquid tank, so that whether cracks and fractures exist on the welding surface and the near surface of the contact part of the connector or not is quickly judged.

Description

Technical Field

[0001] The utility model relates to the technical field of welding inspection devices, and particularly relates to a rapid inspection welding device for connectors. Background Technique

[0002] As an important way of connecting electronic components, the technology of connector welding has evolved from manual welding to automatic welding. With the continuous improvement of the integration of electronic products, higher requirements are put forward for the welding quality and efficiency of connectors. Connector welding technology not only requires reliable connection and good contact, but also needs to have the characteristics of small size, light weight, and low cost. Therefore, the continuous optimization and innovation of welding technology have become an important research direction in the field of connector manufacturing. During the production process of connectors, welding quality is one of the key factors affecting product performance. Traditional welding quality inspection methods often rely on manual visual inspection or simple measuring tools. This method is not only inefficient, but also easily affected by human factors, resulting in inaccurate inspection results. Therefore, it is particularly important to develop a device that can quickly and accurately inspect the welding quality of connectors. Such a device can realize the automatic inspection of welding quality, improve the inspection efficiency and accuracy, and reduce the production cost and labor cost.

[0003] The welding part of the connector is generally the connector contact. When detecting the welding situation of the connector in the prior art, if magnetic particle inspection is used to detect the welding situation, most of them often require manual operations, such as magnetizing the connector contact and applying magnetic powder. This not only increases the labor intensity, but also poses a great test to the technical level of the users. Uneven, excessive or insufficient application of magnetic powder may affect the inspection efficiency and accuracy. Summary of the Invention

[0004] (1) Technical problems to be solved: Aiming at the deficiencies that when detecting the welding situation by using magnetic particle inspection in the prior art, most of them require manual operations, such as magnetizing the connector contact and applying magnetic powder, which increases the labor intensity, reduces the inspection efficiency, and affects the accuracy, the utility model provides a rapid inspection welding device for connectors. The device magnetizes the connector contact part by using the principle of electromagnetic induction, and then quickly inserts the contact part into the liquid tank filled with magnetic suspension by pressing the device. By observing the distribution of magnetic powder through the transparent liquid tank, it is judged whether there are cracks and fractures on the welding surface and near surface of the connector contact.

[0005] (2) Technical solution: To achieve the above object, the present utility model provides the following technical solution: A rapid inspection and welding device for a connector, which is used to detect the welding condition at the connection between the connector housing and the contact member, and includes a detection part and a magnetization part. The main body of the magnetization part is a hollow column. Inside the lower part of the hollow column, there is a magnetic induction coil closely attached to the inner wall of the hollow column. The number of the magnetic induction coils is greater than or equal to 2, and the magnetic induction coils are electrically connected through wires; the magnetization part is sleeved outside the detection part. The detection part is designed and installed with a limit post. The diameter of the limit post is equal to the inner diameter of the upper part of the hollow column. The inner diameter of the upper end of the hollow column is smaller than that of the lower end. The magnetization part has a vertical movement freedom on the annular outer surface of the limit post through the upper end of the hollow column; a liquid tank is designed and installed below the limit post. The liquid tank is fixedly connected to the limit post. The liquid tank is made of transparent glass or plastic. The liquid tank is filled with a magnetic suspension liquid containing magnetic powder. A small hole with the same specification as the contact member of the connector is designed at the bottom of the liquid tank. A cover plate is installed inside the liquid tank, and the density of the cover plate is greater than that of the magnetic suspension liquid inside the liquid tank.

[0006] Preferably, the inner wall of the hollow column and the magnetic induction coil are connected by glue. Two power connection terminals are designed on the surface of the hollow column body. The wires connecting the magnetic induction coils are connected to an external power supply through the power connection terminals.

[0007] Preferably, the inner diameter of the hollow column is slightly larger than the connector housing. When the hollow column is sleeved outside the connector housing, the magnetic induction coil is wrapped outside the contact member.

[0008] Preferably, a liquid inlet is designed on the surface of the cover plate. The position of the liquid inlet does not coincide with that of the small hole. The area of the cover plate is the same as that of the bottom of the liquid tank. When the liquid tank is in a non-working static state, the lower surface of the cover plate is closely attached to the bottom of the liquid tank.

[0009] Preferably, the hollow column is made of a non-magnetic and non-conductive material.

[0010] (3) Beneficial effects: Compared with the prior art, the present utility model provides a rapid inspection and welding device for a connector, which has the following beneficial effects:

[0011] 1. A quick inspection and welding device for a connector is designed with a magnetization part. The main body of the magnetization part is a non-conductive and non-magnetic hollow column, which not only ensures safety but also eliminates interference with the magnetization step. Two or more magnetic induction coils are tightly connected to the inner wall of the hollow column with glue, and the glue is a non-conductive and non-magnetic material, which can reduce the influence on the magnetization step. The inner diameter of the hollow column is slightly larger than the outer shell of the standard model connector, ensuring that the connector outer shell can be placed inside the hollow column, and the magnetic induction coils can wrap the contacts inside the connector outer shell, so that the contacts are within the annular range formed by the magnetic induction coils. At the same time, the magnetic induction coils are all connected in circuit through wires, and both ends of the wires are connected to the power connection terminals opened on the outer wall of the hollow column. The power connection terminals extend to the outside of the hollow column, and the user can apply voltage across the two ends of the power connection terminals to energize the magnetic induction coils inside the hollow column. When the magnetic induction coils are energized, current passes through the magnetic induction coils to generate a magnetic field, magnetizing the contacts located in the middle of the magnetic induction coils. The user can adjust the magnitude and time of the current through the external power connection terminals as needed to achieve the desired magnetization effect. After magnetization is completed, turn off the switch of the control circuit and disconnect the power supply. At this time, the connector contacts have been magnetized and can be used normally or for other operations.

[0012] 2. A quick inspection and welding device for a connector. After the connector contacts are magnetized, the user can push the magnetization part upward along the limit post, then align the small hole opened on the lower surface of the liquid tank of the detection part with the connector, and press the connector into the liquid tank. The connector pushes the cover plate originally located at the bottom of the liquid tank upward. And because the connector and the small hole have the same size, the magnetic suspension liquid inside the liquid tank will not leak. After the contacts completely enter the liquid tank, let the device and the connector as a whole stand still for a period of time, and observe the distribution of magnetic powder on the surface of the welding area through the transparent liquid tank. Pay attention to the degree of aggregation and shape of the magnetic powder to judge whether there are defects. The aggregation of magnetic powder usually indicates the location of defects, such as cracks, lack of fusion, etc. After the observation is completed, the user writes down the places with welding defects, and then smoothly pulls out the contacts from the liquid tank. Since the density of the cover plate inside the liquid tank is greater than that of the magnetic suspension liquid inside the liquid tank, the cover plate will fall as the contacts are pulled out and finally fit tightly with the lower bottom surface of the liquid tank to prevent the magnetic suspension liquid from flowing out, completing the detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is an exploded view of the present invention and the connector to be tested;

[0014] Figure 2 is a perspective structural view of the detection part of the present invention;

[0015] Figure 3 is a perspective structural view of the magnetization part of the present invention;

[0016] Figure 4 This is the overall sectional structure schematic diagram during the magnetization step of the present utility model;

[0017] Figure 5 This is the overall sectional structure schematic diagram during the detection step of the present utility model;

[0018] Figure 6 This is the top view structure schematic diagram of the cover plate of the present utility model;

[0019] Figure 7 This is the partial enlarged sectional view of the cover plate of the present utility model.

[0020] In the figure: 1. Detection part; 101. Limit post; 102. Liquid tank; 103. Cover plate; 104. Small hole; 105. Liquid inlet; 2. Magnetization part; 201. Magnetic induction coil; 202. Power connection terminal; 203. Hollow column; 3. Connector housing; 301. Contact part. Specific embodiments

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0022] Such as Figures 1-3As shown in the figure, a quick inspection and welding device for a connector is used to detect the welding condition at the connection between the connector housing 3 and the contact 301, and includes a detection part 1 and a magnetization part 2. The main body of the magnetization part 2 is a hollow column 203. Inside the lower part of the hollow column 203, a magnetic induction coil 201 that closely adheres to the inner wall of the hollow column 203 is designed. The number of the magnetic induction coils 201 is greater than or equal to 2, and the magnetic induction coils 201 are electrically connected through wires; the magnetization part 2 is sleeved outside the detection part 1. The detection part 1 is designed and installed with a limit post 101. The diameter of the limit post 101 is equal to the inner diameter of the upper part of the hollow column 203. The upper end diameter inside the hollow column 203 is smaller than the lower end diameter. The magnetization part 2 has a vertical movement freedom on the annular outer surface of the limit post 101 through the upper end of the hollow column 203; a liquid tank 102 is designed and installed below the limit post 101. The liquid tank 102 is fixedly connected to the limit post 101. The liquid tank 102 is made of transparent glass or plastic. The liquid tank 102 is filled with a magnetic suspension liquid containing magnetic powder. A small hole 104 with the same specification as the contact 301 of the connector is designed at the bottom of the liquid tank 102. Since the size of the connector is the same as that of the small hole 104, when the contact 301 enters the inside of the liquid tank 102, the magnetic suspension liquid inside the liquid tank 102 will not leak. A cover plate 103 is installed inside the liquid tank 102. The density of the cover plate 103 is greater than that of the magnetic suspension liquid inside the liquid tank 102. Therefore, when the user smoothly pulls out the contact 301 from the inside of the liquid tank 102, since the density of the cover plate 103 inside the liquid tank 102 is greater than that of the magnetic suspension liquid inside the liquid tank 102, the cover plate 103 will fall as the contact 301 is pulled out and finally closely fit with the bottom surface of the liquid tank 102 to prevent the magnetic suspension liquid from flowing out.

[0023] As Figure 3 shown, the inner wall of the hollow column 203 and the magnetic induction coil 201 are connected by glue. The glue is a non-conductive and non-magnetic material, which can reduce the influence on the magnetization step. Two power connection terminals 202 are designed on the surface of the column body of the hollow column 203. The wires connecting the magnetic induction coils 201 are connected to an external power supply through the power connection terminals 202. The user can apply a voltage across the two ends of the power connection terminals 202 to energize the magnetic induction coil 201 inside the hollow column 203, and can also adjust the magnitude and time of the current according to needs through the external power connection terminals 202 to achieve the expected magnetization effect.

[0024] As Figures 4-5As shown, the inner diameter of the hollow core column 203 is slightly larger than that of the connector housing 3, ensuring that the outer shell of the connecting piece can be placed inside the hollow core column 203, and the magnetic induction coil 201 can wrap the contact piece 301 inside the outer shell of the connecting piece, so that the contact piece 301 is within the circular range formed by the magnetic induction coil 201. When the hollow core column 203 is sleeved outside the connector housing 3, the magnetic induction coil 201 wraps around the outside of the contact piece 301.

[0025] As Figure 6 shown, the surface of the cover plate 103 is designed with a liquid inlet 105, and the position of the liquid inlet 105 does not coincide with that of the small hole 104. The bottom area of the cover plate 103 is the same as that of the liquid tank 102. When the liquid tank 102 is in a non-operating static state, the lower surface of the cover plate 103 is closely attached to the bottom of the liquid tank 102.

[0026] As Figure 1 shown, the hollow core column 203 is made of a non-magnetic and non-conductive material, which not only ensures safety but also eliminates interference with the magnetization step.

[0027] In specific use, the use of the device is divided into a magnetization step and a detection step. During the magnetization step, the user can apply a voltage across the power connection terminals 202 to energize the magnetic induction coil 201 inside the hollow column 203. When the magnetic induction coil 201 is energized, an electric current passes through the magnetic induction coil 201 to generate a magnetic field, magnetizing the contact member 301 located in the middle of the magnetic induction coil 201. The user can adjust the magnitude and duration of the current through the external power connection terminals 202 as needed to achieve the desired magnetization effect. After magnetization is completed, the switch of the control circuit is turned off and the power supply is disconnected. At this time, the connector contact member 301 has been magnetized and can be used normally or for other operations. When the connector contact member 301 is magnetized, the user can push the magnetized part 2 upward along the limit post 101, then align the small hole 104 opened on the lower surface of the liquid tank 102 of the detection part 1 with the connecting member, and press the connecting member into the liquid tank 102. The connecting member pushes the cover plate 103 originally located at the bottom of the liquid tank 102 upward. Since the dimensions of the connecting member and the small hole 104 are the same, the magnetic suspension liquid inside the liquid tank 102 will not leak out. After the contact member 301 completely enters the liquid tank 102, the device and the connector as a whole are left stationary for a period of time, and the distribution of magnetic powder on the surface of the welding area is observed through the transparent liquid tank 102. Pay attention to the degree of aggregation and shape of the magnetic powder to determine whether there are defects. The aggregation of magnetic powder usually indicates the location of defects such as cracks and lack of fusion. After the observation is completed, the user marks the places with welding defects, and then gently pulls out the contact member 301 from inside the liquid tank 102. Since the density of the cover plate 103 inside the liquid tank 102 is greater than that of the magnetic suspension liquid inside the liquid tank 102, the cover plate 103 will fall as the contact member 301 is pulled out and finally fit tightly against the lower bottom surface of the liquid tank 102 to prevent the magnetic suspension liquid from flowing out, thus completing the detection.

[0028] It should be noted that, without conflict, the embodiments in this application and the features in the embodiments can be combined with each other. The following will detail this application with reference to the drawings and in conjunction with the embodiments.

[0029] The above description is only a preferred embodiment of this application and an explanation of the applied technical principles. Those skilled in the art should understand that the scope of the utility model involved in this application is not limited to the technical solution formed by the specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept of the utility model. For example, the technical solutions formed by mutually replacing the above features with the (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A connector quick inspection welding device, used to detect the welding condition of the connection between the connector housing (3) and the contact piece (301), comprising a detection part (1) and a magnetization part (2), characterized in that: The main body of the magnetizing part (2) is a hollow column (203), and a magnetic induction coil (201) is designed at the bottom of the hollow column (203) and is closely attached to the inner wall of the hollow column (203). The number of the magnetic induction coils (201) is greater than or equal to 2, and the magnetic induction coils (201) are connected to each other by a wire. The magnetizing part (2) is sleeved on the outside of the detection part (1), and the detection part (1) is designed to be installed with a limiting column (101). The diameter of the limiting column (101) is equal to the upper diameter of the hollow column (203). The upper end diameter of the hollow column (203) is smaller than the lower end diameter. The magnetizing part (2) is connected to the inner wall of the hollow column (203) by the hollow column (203). The upper end of the core column (203) has a degree of freedom of movement in a vertical direction on the annular outer surface of the limiting column (101); a liquid tank (102) is designed and installed below the limiting column (101); the liquid tank (102) and the limiting column (101) are fixedly connected; the liquid tank (102) is made of transparent glass or plastic material; a magnetic suspension containing magnetic powder is filled in the liquid tank (102); a small hole (104) of the same specification as the contact piece (301) of the connector is designed at the bottom of the liquid tank (102); a cover plate (103) is installed in the liquid tank (102); the density of the cover plate (103) is greater than that of the magnetic suspension in the liquid tank (102).

2. A quick inspection welding device for a connector according to claim 1, characterized in that: The inner wall of the hollow column (203) and the magnetic induction coil (201) are connected by glue, and two power terminals (202) are designed on the surface of the hollow column (203). The wires connecting the magnetic induction coils (201) are connected to an external power source via the power terminals (202).

3. A quick inspection welding device for a connector according to claim 1, characterized in that: The inner diameter of the hollow column (203) is slightly larger than the connector housing (3); when the hollow column (203) is sleeved outside the connector housing (3), the magnetic induction coil (201) is wrapped around the outside of the contact piece (301).

4. A quick inspection welding device for a connector according to claim 1, characterized in that: The surface of the cover plate (103) is designed with a liquid inlet (105), the position of the liquid inlet (105) and the small hole (104) do not overlap, the cover plate (103) and the bottom area of ​​the liquid tank (102) are the same, and when the liquid tank (102) is in a non-operating static state, the lower surface of the cover plate (103) is tightly attached to the bottom of the liquid tank (102).

5. The quick inspection welding device of a connector according to claim 2, characterized in that: The hollow column (203) is made of a non-magnetic and non-conductive material.

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