Precise tin removing device

Abstract

The utility model relates to a precise tin removal device which comprises a heat source, a tin removal device, a tin removal device and a tin removal device. The negative pressure part is used for being connected to an additional negative pressure air source so as to suck waste tin; a detinning base; the tin removing base is provided with a hot air channel and a negative pressure channel which are used in cooperation with a heat source and a negative pressure component. The tin removing component is used for guiding hot air and negative pressure; and the collecting part is used for collecting the waste tin. The utility model has the advantages that: 1, the operation is simple, convenient and fast; 2, a non-contact tin removal mode in the whole process avoids damage and scratching of a PCB bonding pad or product scrapping caused by dragging off of a welding spot; 3, harmful smoke is sucked away together to protect the environment; and 4, consumables are not used, the efficiency is greatly improved, and the product quality is better guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of PCB soldering, specifically to a precision desoldering device. Background Technology

[0002] In the field of electronics manufacturing and repair, PCBs (Printed Circuit Boards), as the carriers of electronic components, directly affect the performance and reliability of products through their soldering quality. Removing excess solder dross from the pads is an indispensable step in PCB manufacturing and subsequent maintenance. Traditionally, this step is mainly done manually using a soldering iron. The high temperature of the soldering iron heats the solder points on the pads until they melt, and then the excess dross is removed using desoldering wicks. While this method is technically feasible and has been widely used for a long time, it suffers from at least the following drawbacks, including but not limited to:

[0003] 1. Traditional technical operations are cumbersome. Manual operation not only requires operators to have a high level of skill to accurately control the temperature and contact time of the soldering iron to avoid damaging the PCB or components due to overheating, but also requires frequent replacement of desoldering wire, which increases the complexity and time cost of operation.

[0004] 2. Traditional techniques inherently carry the risk of damaging PCB pads. Under the combined effects of high temperatures and physical contact, the pad surface is easily scratched or deformed, and may even cause the solder joint to be completely pulled off, resulting in the scrapping of the PCB board, increasing production costs and wasting resources.

[0005] 3. When using traditional techniques to remove solder, the soldering iron releases harmful gases and fine particles when heating the solder joints. Long-term exposure to such an environment may damage the respiratory system of operators and also exacerbate air pollution problems in the production workshop.

[0006] 4. From an efficiency and cost perspective, traditional desoldering methods are inefficient, consume a lot of consumables, and cannot guarantee the stability of product quality. Manual operation involves many uncontrollable factors, easily leading to inconsistent product quality and failing to meet the demands of modern electronics manufacturing for high efficiency, precision, and environmental friendliness.

[0007] In view of this, improvements are needed to address the aforementioned deficiencies. Utility Model Content

[0008] The technical problem to be solved by this utility model is to overcome the above-mentioned defects and provide a precision desoldering device.

[0009] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows:

[0010] A precision desoldering device, comprising:

[0011] A heat source, which generates heat and melts tin through the heat emitted therefrom;

[0012] A negative pressure component, which is connected to an additional negative pressure air source to extract waste tin;

[0013] Solder removal base; the solder removal base is provided with a hot air channel and a negative pressure channel for use with a heat source and a negative pressure component;

[0014] A desoldering component, which is used for guiding hot air and negative pressure;

[0015] A collection component for collecting waste tin.

[0016] As an improvement, the heat source is a hollow heater, which is fixedly connected to the top of the desoldering base and communicates with its hot air channel, and the hot air channel on the desoldering base runs through itself vertically.

[0017] As an improvement, the negative pressure component is a negative pressure tube that runs vertically through the tube. A connector is provided at the top of the tube, and the tube is connected to an additional air source through the connector. The bottom of the negative pressure tube is fixedly connected to the desoldering base and communicates with its negative pressure channel.

[0018] As an improvement, the desoldering component is a desoldering nozzle, which is open from top to bottom, and its top thread is installed to the top of the desoldering base. The open part of the desoldering nozzle is connected to the hot air channel. Air guides are opened on both sides of the desoldering nozzle, and the air guides are connected to the negative pressure channel.

[0019] As an improvement, the collection component includes a waste tin can, which is fixedly connected to the detinning base by screws. The waste tin can is equipped with an isolation mesh, which divides the waste tin can into an upper cavity and a lower cavity. The upper cavity is connected to a negative pressure pipe, and the lower cavity is connected to an air vent.

[0020] As an improvement, a slide rail is fixedly connected inside the waste tin can, and the isolation net is slidably connected inside the slide rail. The slide rail and the isolation net are connected by a snap-fit ​​structure.

[0021] As an improvement, the buckle structure includes a downward-opening cavity one, and a cavity two that works with the isolation net at the front end. The cavity one is located in front of the upper slide rail. At least two damping rods are fixedly connected inside the cavity one. A wedge block is fixedly connected to the bottom end of each damping rod. The wedge block passes through the cavity one, extends into the cavity two, and forms a snap-fit. An actuating rod that works with the wedge block is rotatably connected inside the cavity two. A spring is sleeved on the damping rod. The spring is connected to the wedge block and the inner wall of the cavity one, respectively.

[0022] As an improvement, the screw is fitted with a spring sleeve, which is used to fasten the waste tin can and the detinning base.

[0023] As an improvement, a seal is formed between the waste tin container and the tin removal base.

[0024] Compared to traditional technologies, the advantages of this invention are: 1. This invention, through additional software control, enables one-button start, allowing operators to quickly initiate the entire desoldering process without complex setup steps. This not only improves work efficiency but also reduces the possibility of operational errors, making operation simpler and faster.

[0025] 2. This utility model uses a combination of hot air and negative pressure to achieve a non-contact desoldering process. This method avoids the physical damage to the PCB board that may be caused by traditional manual desoldering, such as scratches on the pads or damage caused by dragging the solder joints, thereby effectively reducing the scrap rate of products and improving the overall quality of products.

[0026] 3. The design of this utility model ensures that harmful fumes generated during the desoldering process are directly absorbed by the negative pressure component, effectively preventing the release of harmful substances into the environment and ensuring workplace safety and environmental protection. This not only meets the environmental protection requirements of modern industrial production but also protects the health of operators.

[0027] 4. The precision desoldering device designed in this utility model does not require additional consumables, such as traditional flux, thus greatly reducing operating costs. At the same time, due to the use of a highly efficient heat source and negative pressure components, the desoldering process is faster, improving production efficiency. Attached Figure Description

[0028] Figure 1 The three-dimensional structure of this utility model Figure 1 ;

[0029] Figure 2 The three-dimensional structure of this utility model Figure 2 ;

[0030] Figure 3 The three-dimensional structure of this utility model Figure 3 ;

[0031] Figure 4 This is a side cross-sectional view of the present invention;

[0032] Figure 5 This is a side cross-sectional view of the waste tin can of this utility model;

[0033] Figure 6 This is an enlarged view of point A in this utility model;

[0034] As shown in the figure: 1. Desoldering base; 2. Hollow heater; 3. Negative pressure pipe; 4. Connector; 5. Desoldering nozzle; 6. Air vent; 7. Waste solder container; 8. Screw; 9. Isolation mesh; 10. Upper cavity; 11. Lower cavity; 12. Slide rail; 13. Cavity 1; 14. Cavity 2; 15. Damping rod; 16. Wedge block; 17. Actuating lever; 18. Spring; 19. Spring sleeve. Detailed Implementation

[0035] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses consistent with some aspects of this disclosure as detailed in the appended claims.

[0036] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0037] Please refer to the instruction manual appendix. Figures 1-6 This utility model discloses a precision desoldering device, which mainly includes a heat source, a negative pressure component, a desoldering base 1, a desoldering component, and a collection component. The heat source is used to generate heat and melt the tin through the heat emitted by it. In a preferred embodiment of this utility model, the heat source is a hollow heater 2, which is hollow inside and connected to an additional power source to generate heat.

[0038] The negative pressure component is used to connect to an additional negative pressure gas source. In a preferred embodiment of this utility model, the negative pressure component is a negative pressure pipe 3, which runs vertically through the pipe. A connector 4 is provided at the top of the pipe, and the pipe 4 is connected to an additional gas source. The negative pressure generated by the gas source is conducted to the negative pressure pipe 3 through the connector 4 to absorb waste tin.

[0039] The aforementioned desoldering base 1 is equipped with a hot air channel and a negative pressure channel for use with the heat source and negative pressure component. In a preferred embodiment of this utility model, the hollow heater 2 is fixedly connected to the top of the desoldering base 1 and communicates with its hot air channel, and the bottom of the negative pressure pipe 3 is fixedly connected to the desoldering base 1 and communicates with its negative pressure channel. The bottom of the desoldering base 1 is connected to the desoldering component, which is used for guiding hot air and negative pressure. Specifically, the desoldering component is a desoldering nozzle 5, which is vertically continuous, with its top threadedly installed at the top of the desoldering base 1. The vertically continuous part of the desoldering nozzle 5 communicates with the hot air channel, and air guide ports 6 are opened on both sides of the desoldering nozzle 5, which communicate with the negative pressure channel. In actual use, the hollow heater 2 is heated by the additional software control, generating heat. The heat is directed to the desoldering nozzle 5 through the hot air channel, and then to the PCB pads through the desoldering nozzle 5, so that the pads are heated. After the solder on the pads melts, the negative pressure is turned on by the software control, and the negative pressure is input. The negative pressure channel and the negative pressure pipe 3 are connected through the connector 4 of the negative pressure pipe 3. Then, the excess solder dross on the PCB pads is sucked away by the air guide 6.

[0040] If these solder dross particles were to pass directly through the negative pressure pipe 3, they could cause blockages and contaminate the negative pressure air source. Therefore, to prevent solder dross particles from entering the negative pressure channel, this invention also includes a collection component. This collection component includes a waste solder container 7, which is fixedly connected to the desoldering base 1 by screws 8. A spring sleeve 19 is fitted over the screws 8 to secure the waste solder container 7 and the desoldering base 1. This connection creates a seal between the waste solder container 7 and the desoldering base 1, ensuring no air leakage during negative pressure suction. Furthermore, the waste solder container 7 is equipped with an isolation mesh 9, which divides it into an upper cavity 10 and a lower cavity 11. The upper cavity 10 is connected to the negative pressure pipe 3, and the lower cavity 11 is connected to the air vent 6. Negative pressure is provided by the negative pressure pipe 3, and the solder dross particles enter the lower cavity 11 from the air vent 6 and are intercepted by the isolation mesh 9. This prevents the solder dross particles from entering the upper cavity 10 and the negative pressure pipe 3, thus preventing blockages.

[0041] However, with prolonged use, the isolation net 9 will inevitably become clogged or dirty. In order to quickly clean and replace the isolation net 9, this utility model is designed with a snap-fit ​​structure. Specifically, a slide rail 12 is fixedly connected inside the waste tin can 7, and the isolation net 9 is slidably connected inside the slide rail 12. The slide rail 12 and the isolation net 9 are connected by a snap-fit ​​structure. The snap-fit ​​structure includes a downward-opening cavity 13, and a cavity 14 at the front end of the isolation net 9 for use with the cavity 13. The cavity 13 is located in front of the upper slide rail 12. At least two damping rods 15 are fixedly connected inside the cavity 13. A wedge block 16 is fixedly connected to the bottom end of the damping rod 15. The wedge block 16 passes through the cavity 13, extends into the cavity 14 and forms a snap-fit. An actuating rod 17 for use with the wedge block 16 is rotatably connected inside the cavity 14. A spring 18 is sleeved on the damping rod 15. The spring 18 is connected to the wedge block 16 and the inner wall of the cavity 13 respectively.

[0042] Therefore, when it is necessary to disassemble or assemble the isolation net 9, the user only needs to use a small rod to insert into the cavity 14 and turn the lever 17. The lever 17 is turned by force, pushing the wedge block 16 upward and slowly returning to the cavity 13. When it is completely returned to the cavity 13, the damping rod 15 and the spring 18 retract to the maximum, the slide rail 12 and the isolation net 9 are released from the limit, and the user can remove the isolation net 9 for disassembly.

[0043] It should also be noted that all electrical components mentioned in this article are connected to an external main controller and 220V AC mains power. The main controller can be a conventional known device such as a computer. The specific implementation of this disclosure omits detailed descriptions of known functions and components. To ensure device compatibility, the operating methods used are consistent with the parameters of commercially available instruments.

[0044] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A precision tin removal device, characterized by, include: A heat source, which generates heat and melts tin through the heat emitted therefrom; A negative pressure component, which is connected to an additional negative pressure air source to extract waste tin; Solder removal base (1); the solder removal base (1) is provided with a hot air channel and a negative pressure channel for use with a heat source and a negative pressure component; A desoldering component, which is used for guiding hot air and negative pressure; A collection component for collecting waste tin.

2. The precision tin removal device of claim 1, wherein: The heat source is a hollow heater (2), which is fixedly connected to the top of the desoldering base (1) and connected to its hot air channel. The hot air channel on the desoldering base (1) runs through itself from top to bottom.

3. The precision tin removal device of claim 2, wherein: The negative pressure component is a negative pressure tube (3), which runs vertically through the tube. A connector (4) is provided at the top of the tube, and the tube is connected to an additional air source through the connector (4). The bottom of the negative pressure tube (3) is fixedly connected to the desoldering base (1) and communicates with its negative pressure channel.

4. The precision tin removal device of claim 3, wherein: The desoldering component is a desoldering nozzle (5), which is open from top to bottom. Its top teeth are installed on the top of the desoldering base (1). The open part of the desoldering nozzle (5) is connected to the hot air channel. Air guides (6) are opened on both sides of the desoldering nozzle (5), and the air guides (6) are connected to the negative pressure channel.

5. The precision tin removal device of claim 4, wherein: The collection component includes a waste tin can (7), which is fixedly connected to the detinning base (1) by screws (8). The waste tin can (7) is provided with an isolation net (9), which divides the waste tin can (7) into an upper cavity (10) and a lower cavity (11). The upper cavity (10) is connected to the negative pressure pipe (3), and the lower cavity (11) is connected to the air vent (6).

6. The precision tin removal device of claim 5, wherein: The waste tin can (7) is fixedly connected to a slide rail (12), and the isolation net (9) is slidably connected to the slide rail (12). The slide rail (12) and the isolation net (9) are connected by a snap-fit ​​structure.

7. The precision tin removal device of claim 6, wherein: The buckle structure includes a downward-opening cavity one (13), and a cavity two (14) for use with the cavity one (13) at the front end of the isolation net (9). The cavity one (13) is located in front of the upper slide rail (12). At least two damping rods (15) are fixedly connected in the cavity one (13). A wedge block (16) is fixedly connected to the bottom end of the damping rod (15). The wedge block (16) passes through the cavity one (13), extends into the cavity two (14) and forms a snap. A toggle rod (17) for use with the wedge block (16) is rotatably connected in the cavity two (14). A spring (18) is sleeved on the damping rod (15). The spring (18) is connected to the wedge block (16) and the inner wall of the cavity one (13) respectively.

8. The precision tin removal device of claim 5, wherein: The screw (8) is fitted with a spring sleeve (19), which is used to fasten the waste tin can (7) and the detinning base (1).

9. The precision tin removal device of claim 5, wherein: A seal is formed between the waste tin can (7) and the tin removal base (1).

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