A manufacturing process for connecting a charger pin to a circuit board

Abstract

The present invention discloses a manufacturing process for connecting the pins of a charger with a circuit board, and relates to the technical field of charger production. The technical scheme thereof includes the following steps: an easily disconnected independent area is set on the circuit board, and a plurality of first welding points are set on the circuit board; a plurality of second welding points are set on the independent area; each pin is installed on the independent area, and is electrically connected with each second welding point; one end of each wire is positioned at each first welding point, and the other end is positioned at each second welding point; the first welding point and the second welding point are welded, so that the two ends of the wire are welded to the circuit board and the independent area respectively; the connection between the independent area and the circuit board is disconnected, so that the independent area is removed from the circuit board, and the pins and the circuit board can be installed on the charger housing respectively. The present invention can facilitate the electrical connection between the circuit board and the pins, save labor and processes, and has the effect of improving production efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of charger production, and more specifically, to a manufacturing process for connecting a charger pin with a circuit board. Background Art

[0002] The charger plug and the circuit board usually need to be connected. The current connection is either to use a connector (such as a spring), by welding the connector to the circuit board, and then the plug and the connector are connected to contact, so as to achieve the connection between the plug and the circuit board. For industrial batteries, the battery pack needs to be installed on the charger for charging, and multiple pins are used for connection to meet the functions of charging the battery pack and monitoring the power. Therefore, if the existing connection method is used, multiple connectors are required to be used with the plug, there are many spare parts, and the assembly is too troublesome, resulting in low production efficiency; if wires are used to connect the plug and the circuit board, the two ends of the wire need to be welded separately. One end of the wire can be directly welded to the circuit board through a reflow oven, but it needs to be taken out after welding, and the other end of the wire is manually welded to the pin point-to-point by a handheld welding machine, which is more troublesome, and welding multiple wires separately is very labor-intensive, resulting in low production efficiency and affecting production progress. Summary of the invention

[0003] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a manufacturing process for connecting the charger pins to a circuit board, which can facilitate electrical connection between the circuit board and the pins, save labor and processes, and improve production efficiency.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] A manufacturing process for connecting a charger pin to a circuit board comprises the following steps:

[0006] An independent area that is easy to disconnect is set on the circuit board, and a plurality of first welding points are set on the circuit board; a plurality of second welding points are set on the independent area;

[0007] Each pin is mounted on the independent area and is electrically connected to each second welding point;

[0008] Positioning one end of each wire at each first welding point, and the other end at each second welding point;

[0009] Welding the first welding point and the second welding point so that two ends of the wire are respectively welded to the circuit board and the independent area;

[0010] The connection between the independent area and the circuit board is disconnected to remove the independent area from the circuit board, and the pins and the circuit board can be installed on the charger housing respectively.

[0011] It is further provided that: a plurality of jacks for positioning the plug pins are provided in the independent area; the jacks are electrically connected to the second welding point through a circuit so that the plug pins are electrically connected to the second welding point.

[0012] It is further configured that: the plug pin and the plug hole are interference fit when plugged in; and the two ends of the wire are interference fit with each other when plugged in the first and second welding points respectively.

[0013] It is further configured that: each of the plug pins is installed on the same socket; the socket is an injection molded part; the plug pins are pre-buried in the socket injection mold and are directly formed integrally with the injection molded socket.

[0014] It is further configured that when the plug pin is inserted into the socket, the socket is flat against the circuit board and is on the same horizontal plane as the circuit board.

[0015] It is further arranged that during welding, the pins are simultaneously welded to the sockets to form a positioning.

[0016] Further configuration: the independent area is formed by cutting the circuit board and reserving a number of easy-to-break points; after welding, the easy-to-break area can be separated from the circuit board by applying force to each easy-to-break point and destroying it.

[0017] Further configuration: each of the wires is distinguished by a different color, and their respective soldering points are matched with corresponding colors; the wires are connected to the soldering points with the same color as them for positioning.

[0018] Further setting: wave soldering operation is adopted during soldering, and the wave soldering temperature is set at 260-270 degrees Celsius.

[0019] It is further configured that the circuit board is fed into the welding furnace through a conveyor line for welding, and during the conveying process, the circuit board is fixed on the conveyor line through a knob block.

[0020] By adopting the above technical solution, the present invention has the following advantages compared with the prior art:

[0021] 1. The pins are electrically connected through the independent area, so that the independent area and the first welding point and the second welding point on the circuit board can be connected by wires, and then the first and second welding points are welded in a welding furnace at one time, so that the circuit board and the pins can be electrically connected. The independent area can be removed, and the pins and the circuit board can be installed separately, saving welding procedures, and the welding automation process is not only high in precision but also reduces labor costs, and has the effect of improving production efficiency;

[0022] 2. The jack and the pin are positioned and matched to facilitate the stable installation of the pin on the independent area, so as to facilitate the welding process, and the jack is electrically connected to the second welding point through the circuit, so that the pin can be electrically connected to the second welding point after installation, and then the pin can be electrically connected to the circuit board after welding, thereby improving production efficiency;

[0023] 3. By forming each pin on the same socket, the socket can be aligned with the independent area during installation, and each pin can be installed into the socket of the independent area, which improves the convenience of the installation process, facilitates the installation of multiple pins at one time, and facilitates the subsequent installation of the independent area with pins on the charger housing, thereby improving convenience and thus improving production efficiency;

[0024] 4. The independent area is connected to the circuit board through the easy-break point, so that the independent area is a part of the circuit board. After welding, you only need to break the easy-break point to remove the independent area from the circuit board. This is not only convenient for simultaneous welding, but also easy to separate the independent area from the circuit board, thereby improving the convenience and efficiency of production processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the process of manufacturing the connection between the charger pin and the circuit board in the present invention;

[0026] Figure 2 It is a schematic diagram of the structure when the circuit board and the socket are installed in the present invention;

[0027] Figure 3 It is a schematic diagram of the overall structure of the circuit board in the present invention;

[0028] Figure 4 It is a schematic diagram of the structure of the socket and the pins in the present invention.

[0029] In the figure: 1. Circuit board; 2. Independent area; 3. First welding point; 4. Second welding point; 5. Pin; 6. Wire; 7. Jack; 8. Socket; 9. Breaking point; 10. Process edge. DETAILED DESCRIPTION

[0030] Reference Figures 1 to 4 The manufacturing process of connecting the charger pins to the circuit board is further explained.

[0031] A manufacturing process for connecting the pins of a charger to a circuit board, such as Figure 1 , Figure 2 and Figure 3 As shown, it includes the following steps:

[0032] S1. Cut an independent area 2 on the circuit board 1, and reserve one or more easy-to-break points 9 during cutting so that the circuit board 1 and the independent area 2 form an easily-disconnected connection; wherein the independent area 2 is an independent area on the circuit board 1, that is, the circuit board 1 needs to bypass the independent area 2 for processing during the circuit etching process, so that the entire circuit of the circuit board 1 bypasses the independent area 2, and forms a plurality of first welding points 3 for welding with one end of the wire 6; at the same time, the independent area 2 is also etched with a second welding point 4 for welding with the other end of the wire 6; when processing the welding points, each first welding point 3 and the second welding point 4 can be colored, and can be distinguished by different colors, so as to facilitate pairing of wires 6 of different colors;

[0033] Furthermore, a plurality of sockets 7 are formed on the independent area 2, and the number of the sockets 7 corresponds to the number of the pins 5, so as to allow each pin 5 to be inserted and positioned; the sockets 7 are electrically connected to the second welding point 4 through the etched circuit, so that the pin 5 can be electrically connected to the second welding point 4 after being inserted into the sockets 7;

[0034] S2. Each pin 5 is directly integrally formed on the socket 8 by an injection molding process, and the socket 8 is positioned on the independent area 2, and each pin 5 is inserted into each corresponding socket 7, so that the pin 5 is installed on the independent area 2 and forms an electrical connection with the second welding point 4; wherein the pin 5 is interference fit with the socket 7 when plugged in, so that it is convenient to directly position it on the socket 7 to ensure stable processing in subsequent processes; after the pin 5 is inserted into the socket 7, check whether the socket 8 is flat on the circuit board 1, and require that the socket 8 and the circuit board 1 are on the same horizontal plane, so as to avoid the pin 5 on the socket 8 from being offset in subsequent processes and improve production accuracy;

[0035] S3, each wire 6 is assigned to each first and second welding point 4 by color, and one end of the wire 6 is positioned at the first welding point 3 corresponding to its color, and the other end is positioned at the second welding point 4 corresponding to its color; the wire 6 is positioned at the first and second welding points 4 by plugging or snapping, and the two are interference-fitted with each other during plugging or snapping, so that the wire 6 is initially and stably installed on the circuit board 1 and the independent area 2;

[0036] S4, sending the circuit board 1 processed in step S3 to a soldering furnace for wave soldering, setting the soldering temperature to 260-270 degrees Celsius, so that the first soldering point 3 and the second soldering point 4 are soldered to the wire 6, so that the two ends of the wire 6 are soldered to the circuit board 1 and the independent area 2 respectively, and the pin 5 on the socket 8 is soldered to the independent area 2, so that the pin 5 is fixed to the independent area 2 and is electrically connected to the circuit board 1 through the wire 6;

[0037] S5. Apply force to disconnect each breakable point 9 between the independent area 2 and the circuit board 1, so that the connection between the independent area 2 and the circuit board 1 is disconnected, so that the independent area 2 can be removed from the circuit board 1, and the pins 5 and the circuit board 1 can be installed on the charger shell respectively; in this embodiment, the charger shell includes an upper shell and a lower shell, the circuit board 1 is installed on the lower shell, and the pins 5 are installed on the upper shell through the socket 8 and the removed independent area 2, so that after the upper shell and the lower shell are ultrasonically welded, the charger can be completed and the pins 5 are electrically connected to the circuit board 1.

[0038] In this embodiment, the entire process is processed on the assembly line, that is, the wire 6 is preliminarily connected to the circuit board 1 through step S3, and can be directly sent to the welding furnace for welding through the conveyor line, and the circuit board 1 is fixed on the conveyor line through the knob block. Specifically, a plurality of positioning jigs for placing the circuit board 1 are installed on the conveyor line along its conveying direction, and a knob block is set at each corner of the positioning jig. The knob block is rotatably arranged on the positioning jig, and the rotating shaft of the knob block has friction resistance, so that the knob block can only rotate under force, and one end thereof extends to the area of ​​the positioning jig for placing the circuit board 1, so that after the circuit board 1 is placed on the positioning jig for positioning, the knob block is rotated to press the corners of the circuit board 1 to ensure that the circuit board 1 will not jump out or fall off the positioning jig, so that the welding process is more stable, and it is convenient to directly weld each welding point at one time, effectively saving the process of manpower welding operation and improving production efficiency.

[0039] like Figure 2 and Figure 4 As shown, in this embodiment, the pin 5 is L-shaped, and the two ends formed after the socket 8 extend to the side and bottom of the socket 8 respectively, so that when the socket 8 is assembled to the independent area 2 located on the circuit board 1, one end of the pin 5 is inserted into the socket 7 of the independent area 2, and the other end is located at the side of the socket 8 and extends, so that the socket 8 is exposed after being installed on the charger housing, and then it is convenient to connect with the interface of the battery pack.

[0040] like Figure 2 and Figure 3As shown, a process edge 10 is reserved on the side of the independent area 2 of the circuit board 1, and the process edge 10 is used to clamp or grab the circuit board 1 during the entire manufacturing process, and the process edge 10 is also connected to the circuit board 1 through a number of breakable points 9, and is not connected to the independent area 2. Therefore, during the entire process, the circuit board 1 can be taken and processed by grabbing the process edge 10 to avoid affecting the components or circuits on the circuit board 1. After the circuit board 1 is wave soldered, the independent area 2 can be disconnected and the process edge 10 can be broken off and removed from the circuit board 1, so that a complete circuit board 1 and an independent area 2 with a socket 8 can be obtained, which can be installed on the charger housing respectively to improve the convenience of operation.

[0041] like Figure 2 As shown, further, in order to facilitate the distinction of the functions of each wire 6, in this embodiment, four wires 6 are used to form a connection, and the number of pins 5 is also set to four for coordination; wherein, the colors of the four wires 6 are black, white, red and yellow, respectively, and correspondingly, the first welding point 3 and the second welding point 4 each have four, which are distinguished by black, white, red and yellow, respectively; the red wire 6 and the black wire 6 are the positive and negative poles of the power supply, respectively, and are used to be welded to the two first welding points 3 at the power supply on the circuit board 1; the yellow and white wires 6 are product signal lines, which are used to transmit signals between the circuit board 1 and the independent area 2, so as to implement feedback of various charging data, and facilitate system judgment and processing.

[0042] Working principle: The pin 5 is electrically connected through the independent area 2, so that the first welding point 3 and the second welding point 4 on the independent area 2 and the circuit board 1 can be connected by the wire 6, and then sent to the welding furnace to weld the first and second welding points 4 at one time, so that the circuit board 1 and the pin 5 can be electrically connected. Then, the independent area 2 can be removed, and the pin 5 and the circuit board 1 can be installed separately, saving the welding process. The welding automation process is not only high in precision but also reduces labor costs, and has the effect of improving production efficiency.

[0043] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A manufacturing process for connecting the charger pins to the circuit board. It is characterized in that The following steps are involved: An independent area that is easy to disconnect is set on the circuit board, and a plurality of first welding points are set on the circuit board; a plurality of second welding points are set on the independent area; Each pin is mounted on the independent area and is electrically connected to each second welding point; Positioning one end of each wire at each first welding point, and the other end at each second welding point; Welding the first welding point and the second welding point so that two ends of the wire are respectively welded to the circuit board and the independent area; The connection between the independent area and the circuit board is disconnected to remove the independent area from the circuit board, and the pins and the circuit board can be installed on the charger housing respectively.

2. A manufacturing process for connecting the pins of a charger to a circuit board according to claim 1, Features: The independent area is provided with a plurality of sockets for positioning the plug pins; the sockets are electrically connected to the second welding point through a circuit so that the plug pins are electrically connected to the second welding point.

3. A manufacturing process for connecting the pins of a charger to a circuit board according to claim 2, Features: The plug pin and the plug hole are interference fit when plugged in; and the two ends of the wire are interference fit with each other when plugged in the first and second welding points respectively.

4. A manufacturing process for connecting the charger pins to the circuit board according to claim 2, Features: Each of the plug pins is installed on the same socket; the socket is an injection molded part; the plug pins are pre-buried in the socket injection mold and are directly formed integrally with the injection molded socket.

5. A manufacturing process for connecting the charger pins to the circuit board according to claim 4, Features: When the plug pin is inserted into the jack, the socket is flat against the circuit board and is on the same horizontal plane as the circuit board.

6. A manufacturing process for connecting the pins of a charger to a circuit board according to claim 2, Features: During welding, the pins are welded to the sockets simultaneously to form a positioning.

7. A manufacturing process for connecting a charger pin to a circuit board according to claim 1, Features: The independent area is formed by cutting the circuit board and reserving a number of easy-to-break points; after welding, the easy-to-break area can be separated from the circuit board by applying force to each easy-to-break point and destroying it.

8. A manufacturing process for connecting the pins of a charger to a circuit board according to claim 1, Features: Each of the wires is distinguished by a different color, and their respective soldering points are matched with corresponding colors; the wires are connected to the soldering points with the same color as them for positioning.

9. A manufacturing process for connecting a charger pin to a circuit board according to claim 1, Features: Wave soldering is used during soldering, and the wave soldering temperature is set at 260-270 degrees Celsius.

10. A manufacturing process for connecting a charger pin to a circuit board according to claim 1, Features: The circuit board is sent to the welding furnace through the conveying line for welding, and the circuit board is fixed on the conveying line through the knob block during the conveying process.

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