A gas type tin removing hollow needle

Abstract

The application discloses a gas type tin removing hollow needle, which is characterized by comprising a hollow needle, a connecting unit and a gas source unit, the hollow needle is a hollow needle tube made of high-temperature-resistant material, the connecting unit is in a hollow tubular structure, one end of the connecting unit is a luer joint and the other end is a second joint, the gas source unit stores or generates compressed gas, and the connecting unit and the gas source unit are connected through threads, buckles, adhesion or interference fit. A flexible sleeve is arranged between the connecting unit and the gas source unit, the flexible sleeve is sleeved on the second joint of the connecting unit, and the connecting unit with the flexible sleeve is connected with the gas source unit through interference fit or adhesion. The application aims at the shortage of the prior art, provides the gas type tin removing hollow needle, lets the airflow blow through the inner cavity of the hollow needle, and then blows away the solder, replaces the hand-wound rotating hollow needle, improves the problems that the traditional hollow needle is troublesome to operate and has the risk of damaging the solder pad, and is simple to use and low in cost.

Description

Technical Field

[0001] This invention relates to welding auxiliary tools, and in particular to a pneumatic desoldering hollow needle. Background Technology

[0002] With the development of technology, people have more and more opportunities to come into contact with circuits. Circuits are made by soldering electrical components onto circuit boards. If some components on the circuit board are damaged, people need to replace the faulty components. The first step in removing components from the circuit board is to remove the solder from the component pins.

[0003] Common desoldering methods include desoldering pumps, desoldering wicks, or hollow pins. Desoldering wicks are mainly used to remove residual solder, and are relatively expensive, generally used in more delicate circuit repairs. Desoldering pumps are the most widely used method. In the process of desoldering with a desoldering pump, after the soldering iron melts the solder, the soldering iron is removed while the desoldering pump removes the solder. Because the molten solder solidifies quickly, this process requires a high degree of hand-eye coordination and some training to perform well. Desoldering with a hollow pin is simpler. After melting the solder joint with the soldering iron, a hollow pin of appropriate size is inserted into the solder hole while rotating, then the soldering iron is removed, and finally the hollow pin is rotated out. The entire operation is more cumbersome and risky. The hand holding the hollow pin needs to rub and rotate it multiple times, and the solder is solid when the hollow pin is pulled out. If solder sticks to the hollow pin, pulling out the hollow pin may damage the solder pad. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing a pneumatic desoldering hollow needle. This needle allows airflow to pass through its inner cavity, thereby removing solder and replacing the need for manual rubbing and rotating. This improves upon the problems of traditional hollow needles, such as cumbersome operation and the risk of damaging solder pads. Furthermore, it is simple to use and inexpensive.

[0005] To achieve the above objectives, the present invention provides a pneumatic desoldering hollow needle, characterized in that it comprises a hollow needle, a connecting unit, and a gas source unit. The hollow needle is a hollow needle tube made of high-temperature resistant material. The connecting unit is a hollow tubular structure, with one end being a Luer connector and the other end being a second connector. The gas source unit stores or generates compressed gas. The connecting unit and the gas source unit are connected by threads, snaps, adhesives, or interference fits. Most common needles can be quickly installed on Luer connectors. However, to accommodate the different sizes of pins on electrical components, existing hollow needles are generally a set of multiple different sizes. The Luer connector enables quick switching between multiple hollow needles.

[0006] Furthermore, a flexible sleeve is provided between the connecting unit and the gas source unit. The flexible sleeve is fitted onto the second connector of the connecting unit, and the connecting unit with the flexible sleeve is connected to the gas source unit by interference fit or adhesive bonding. The flexible sleeve serves two purposes: firstly, to ensure a more airtight connection between the connecting unit and the gas source unit; and secondly, to prevent heat conduction between the connecting unit and the gas source unit, thus preventing damage to the gas source unit from the high temperature of the connecting unit.

[0007] Furthermore, the air source unit is an airbag made of elastic material, and the air source unit generates exhaust by squeezing the airbag.

[0008] Furthermore, the gas source unit is also equipped with a one-way valve, the one-way valve being open from the outside atmosphere into the gas source unit.

[0009] Furthermore, the aforementioned air-type desoldering hollow needle comprises a set of multiple hollow needles with different inner diameters, one end of each hollow needle being a Luer connector, and the hollow needle being connected to the connecting unit via the Luer connector. Furthermore, the connection unit is equipped with a manual valve, and the air source unit consists of an air tank and a pneumatic connector. The pneumatic connector can be connected to an external air source to directly fill the air tank.

[0010] Furthermore, the air source unit also includes a manual air pump, which is connected to the pneumatic connector. The manual air pump directly pressurizes the air storage tank, thus providing compressed gas for soldering.

[0011] Furthermore, the air source unit also includes an electric air pump unit, which consists of a motor, an air pump, a control unit, and a power supply. The power supply is a lithium battery or an external power source, which provides energy to the motor. The motor drives the air pump, which is connected to the pneumatic connector to provide air to the air storage tank. The electric air pump unit can operate using a lithium battery or an external power source to pressurize the air storage tank, thus providing compressed gas for soldering.

[0012] The beneficial effects of this invention are as follows: 1. One type of air-type desoldering hollow needle in this solution removes solder by blowing air instead of manually rubbing and rotating, making the operation simpler and less labor-intensive; 2. In this solution, the hollow needle tip of the air-type desoldering hollow needle does not need to penetrate deep into the solder hole. The contact between the hollow needle and the solder is not deep. In addition, the blow will blow away the solder of the hollow needle. There is basically no solder connecting the needle tip and the solder pad. Therefore, this solution reduces the risk of the hollow needle damaging the solder pad. Attached Figure Description

[0013] The invention will be further described below with reference to the accompanying drawings: Figure 1 This is a schematic diagram of the present invention; Figure 2 This is a schematic diagram of the first optimization scheme of the present invention; Figure 3 This is a schematic diagram of the second optimization scheme of the present invention; Figure 4 This is a schematic diagram of the third optimization scheme of the present invention; Figure 5 This is a schematic diagram of the fourth optimization scheme of the present invention; Figure 6 This is a schematic diagram of the fifth optimization scheme of the present invention; Figure 7 This is a schematic diagram of the sixth optimization scheme of the present invention; In the diagram: Hollow needle 1, connecting unit 2, Luer connector 201, second connector 202, manual valve 203, air source unit 3, one-way valve 301, air tank 302, pneumatic connector 303, manual air pump 304, electric air pump unit 305, motor 3051, air pump 3052, power supply 3053, flexible sleeve 4. Detailed Implementation

[0014] The invention will now be described in detail with reference to the accompanying drawings. (See attached drawings.) Figures 1-7 .

[0015] Example 1 。

[0016] like Figure 1 As shown, a pneumatic desoldering hollow needle includes a hollow needle 1, a connecting unit 2, and a pneumatic source unit 3. The hollow needle 1 is a hollow needle tube made of metal. Ten hollow needles 1 are arranged in a group, each with an inner diameter of 0.61, 0.75, 0.84, 1.12, 1.20, 1.36, 1.60, 1.90, 2.30, and 2.50 (mm). The connecting unit 2 is a hollow tubular structure, with one end being a Luer connector 201 and the other end being a second connector 202. Figure 2 As shown, a flexible sleeve 4 is provided between the connecting unit 2 and the gas source unit 3. The flexible sleeve 4 is fitted onto the second connector 202 of the connecting unit 2, and the connecting unit 2 with the flexible sleeve 4 is connected to the gas source unit 3 by an interference fit. Figure 3 As shown, the air source unit 3 is an airbag made of elastic material. The air source unit 3 generates exhaust by compressing the airbag. Figure 4 As shown, the gas source unit 3 is also equipped with a one-way valve 301, and the direction of conduction of the one-way valve 301 is from the outside atmosphere into the gas source unit 3.

[0017] When removing solder from the pins of electrical components, firstly, the user selects a suitable hollow pin 1 based on the diameter of the pin and the solder hole. The suitable conditions are that the inner diameter of the hollow pin 1 is larger than the diameter of the component pin, and the outer diameter of the hollow pin 1 is smaller than the diameter of the solder hole. Secondly, the user heats the solder joint of the pin to be removed with a soldering iron. After the solder joint melts, the user inserts the hollow pin 1 through the solder hole (if the outer diameter of the hollow pin 1 is larger than the diameter of the solder hole, the hollow pin 1 cannot pass through the solder hole; the hollow pin 1 should only be in perpendicular contact with the solder hole) and places it on the component pin. Finally, the user presses the air bladder of the air source unit 3, and the high-speed gas blows away the melted solder, detaching the component pin from the circuit board, thus completing the removal of the component pin.

[0018] Example 2 。

[0019] like Figure 1 As shown, a pneumatic desoldering hollow needle includes a hollow needle 1, a connecting unit 2, and a pneumatic source unit 3. The hollow needle 1 is a metal hollow needle, and there are 10 hollow needles 1 in a group with inner diameters of 0.61, 0.75, 0.84, 1.12, 1.20, 1.36, 1.60, 1.90, 2.30, and 2.50 (mm). The connecting unit 2 is a hollow tubular structure, with one end being a Luer connector 201 and the other end being a second connector 202. Figure 2 As shown, a flexible sleeve 4 is provided between the connecting unit 2 and the gas source unit 3. The flexible sleeve 4 is fitted onto the second connector 202 of the connecting unit 2. The connecting unit 2 with the flexible sleeve 4 is connected to the gas source unit 3 by an interference fit.

[0020] like Figure 5 and 6 As shown, the connecting unit 2 is equipped with a manual valve 203, and the air source unit 3 consists of an air tank 302, a pneumatic connector 303, and a manual air pump 304. The manual air pump 304 is connected to the pneumatic connector 303, and the manual air pump 304 directly pressurizes the air tank 302 by manually pulling it. When the manual valve 203 is opened, the gas in the air tank 302 will be blown out from the hollow needle 1 through the connecting unit 2.

[0021] When removing solder from the pins of electrical components, firstly, manually pull the manual air pump 304 to pressurize the air tank 302; secondly, the user selects a suitable hollow pin 1 according to the diameter of the pin and the solder hole. The suitable conditions are that the inner diameter of the hollow pin 1 is larger than the diameter of the component pin, and the outer diameter of the hollow pin 1 is smaller than the diameter of the solder hole; thirdly, heat the solder joint of the pin to be removed with a soldering iron. After the solder joint melts, the user inserts the hollow pin 1 through the solder hole (if the outer diameter of the hollow pin 1 is larger than the diameter of the solder hole, the hollow pin 1 cannot pass through the solder hole; the hollow pin 1 should only be in perpendicular contact with the solder hole) and puts it on the component pin; finally, open the manual valve 203, and the pressurized gas in the air tank 302 blows away the melted solder, the component pin detaches from the circuit board, and the removal of the component pin is completed.

Claims

1. A pneumatic desoldering hollow needle, characterized in that: It includes a hollow needle (1), a connecting unit (2) and a gas source unit (3). The hollow needle (1) is a hollow needle tube made of high temperature resistant material. The connecting unit (2) is a hollow tubular structure. One end of the connecting unit (2) is a Luer connector (201) and the other end is a second connector (202). The gas source unit (3) stores or generates compressed gas. The connecting unit (2) and the gas source unit (3) are connected by threads, snaps, adhesives or interference fits.

2. The air-type hollow desoldering needle according to claim 1, characterized in that: A flexible sleeve (4) is provided between the connecting unit (2) and the gas source unit (3). The flexible sleeve (4) is fitted onto the second connector (202) of the connecting unit (2). The connecting unit (2) fitted with the flexible sleeve (4) is connected to the gas source unit (3) by interference fit or bonding.

3. A pneumatic desoldering hollow needle according to claim 1 or 2, characterized in that: The air source unit (3) is an airbag made of elastic material, and the air source unit (3) generates exhaust by squeezing the airbag.

4. A pneumatic desoldering hollow needle according to claim 3, characterized in that: The gas source unit (3) is also provided with a one-way valve (301), and the one-way valve (301) is open from the outside atmosphere into the gas source unit (3).

5. A pneumatic desoldering hollow needle according to claim 1, characterized in that: The air-type desoldering hollow needle includes a set of multiple hollow needles (1) with different inner diameters. One end of the hollow needle (1) is a Luer connector, and the hollow needle (1) is connected to the connecting unit (2) through the Luer connector.

6. A pneumatic desoldering hollow needle according to claim 1, characterized in that: The connection unit (2) is equipped with a manual valve (203). The air source unit (3) consists of an air tank (302) and a pneumatic connector (303). The pneumatic connector (303) can be connected to an external air source to directly fill the air tank (302).

7. A pneumatic desoldering hollow needle according to claim 6, characterized in that: The air source unit (3) also includes a manual air pump (304), which is connected to the pneumatic connector (303).

8. A pneumatic desoldering hollow needle according to claim 6, characterized in that: The air source unit (3) also includes an electric air pump unit (305), which consists of a motor (3051), an air pump (3052), a control unit and a power supply (3053). The power supply (3053) is a lithium battery or an external power supply. The power supply (3053) provides energy to the motor (3051). The motor (3051) drives the air pump (3052) to work. The air pump (3052) is connected to the pneumatic connector (303) to provide air source to the air storage tank (302).

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