A soldering tip assembly having a hot air channel

Abstract

This utility model discloses a soldering iron tip assembly with a hot air channel, including a soldering iron tip body, a detachable nozzle sleeve fitted to the outside of the soldering iron tip body, an energy-concentrating cover provided at the bottom of the nozzle sleeve near the welding part at the front end of the soldering iron tip, a spiral guide groove provided on the side wall of the nozzle sleeve, a fluid distribution structure provided at the heating component position on the side of the soldering iron tip body away from the welding part, a heat insulation bracket installed on the top of the soldering iron tip body, an air inlet port provided on the heat insulation bracket, a magnetic sealing ring and a heat-resistant rubber ring provided at the air inlet port to connect to an external hot air generator, the output end of the air inlet pipe located inside the heat insulation bracket abuts against the fluid distribution structure, and a sealing head is installed on the top of the heat insulation bracket. This utility model uses a conical fluid distribution structure to evenly distribute the hot air flow to the spiral guide groove, the generated hot air swirling is focused on the area around the solder joint, the swirling isolating solder vapor, the detachable sleeve can be used for different encapsulation soldering conditions, and the hot air assists in shortening the soldering time with residual heat.

Description

Technical Field

[0001] This utility model relates to the field of welding tool technology, and in particular to a soldering iron tip assembly with a hot air channel. Background Technology

[0002] Soldering irons are essential tools for electronics manufacturing and appliance repair. Their main purpose is to solder components such as resistors, capacitors, inductors, and integrated chips, as well as wires. Traditional soldering irons have a maximum power of 500W. When soldering high-temperature alloys, they heat up slowly, easily resulting in insufficient solder joint temperature and thus, cold solder joints. Heat is transferred to the soldering tip solely through conduction, leading to significant lateral heat loss. Furthermore, the smoke generated during soldering obstructs visibility and reduces the accuracy of manual solder feeding. Utility Model Content

[0003] To address the aforementioned technical problems, a soldering iron tip assembly with a hot air channel is provided.

[0004] To achieve the above objectives, this utility model discloses a soldering iron tip assembly with a hot air channel, including a soldering iron tip body, a detachable nozzle sleeve sleeved on the outside of the soldering iron tip body, an energy-concentrating cover provided at the bottom of the nozzle sleeve near the welding part at the front end of the soldering iron tip, a spiral guide groove provided on the side wall of the nozzle sleeve, a fluid distribution structure provided at the heating component position on the side of the soldering iron tip body away from the welding part, a heat insulation bracket installed on the top of the soldering iron tip body, an air inlet port provided on the heat insulation bracket, a magnetic sealing ring and a heat-resistant rubber ring provided at the air inlet port to connect to an external hot air generator, the output end of the air inlet pipe located inside the heat insulation bracket abutting against the fluid distribution structure, and a sealing head installed on the top of the heat insulation bracket.

[0005] Furthermore, the nozzle sleeve is embedded in the bottom of the heat insulation bracket, and the spiral guide groove has a spiral angle of 15° to 45° and a depth of 0.2mm to 0.5mm.

[0006] Furthermore, the surface of the spiral guide groove is coated with a silicon carbide coating.

[0007] Furthermore, the inner diameter of the outlet end of the energy-concentrating cover is smaller than the maximum diameter of the soldering iron tip body, and the inner surface of the energy-concentrating cover is coated with an infrared reflective layer with a reflectivity ≥90%.

[0008] Furthermore, the energy-concentrating cover is provided with a cross-shaped retaining ring structure inside, which is used to limit the baffle above the soldering iron tip welding part, and the soldering iron tip welding part passes through the center of the retaining ring structure.

[0009] Furthermore, the fluid distribution structure is an inverted cone shape, and the cone surface of the fluid distribution structure near the intake pipe is provided with an array of guide grooves in the circumferential direction. The fluid distribution structure is installed in conjunction with the chamfer at the bottom of the intake pipe.

[0010] Furthermore, the magnetic sealing ring incorporates a permanent magnet array made of samarium cobalt alloy with an operating temperature ≥450℃, and a heat-resistant rubber ring is embedded in a sealing groove on the surface of the magnetic sealing ring.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model discloses a soldering iron tip assembly with a hot air channel. The hot air flow is evenly distributed to the spiral guide groove through the conical fluid distribution structure. The generated hot air vortex is focused on the area around the solder joint. The vortex isolates the solder vapor. The detachable sleeve can be used for different packaging soldering conditions. The hot air assists the residual heat to shorten the soldering time. Attached Figure Description

[0012] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0014] Figure 2 This is a schematic diagram of the exploded structure of this utility model.

[0015] Figure 3 This is a cross-sectional view of the present invention.

[0016] Figure 4 This is a schematic diagram of the heat insulation bracket of this utility model.

[0017] Figure 5 This is a schematic diagram of the bottom of the heat insulation bracket of this utility model.

[0018] Figure 6 This is a schematic diagram of the nozzle sleeve structure of this utility model.

[0019] Figure 7 This is a schematic diagram of the fluid distribution structure of this utility model.

[0020] In the diagram: 1 is the soldering iron tip body; 11 is the soldering part; 12 is the heating component; 2 is the nozzle sleeve; 21 is the energy-concentrating cover; 22 is the spiral guide groove; 23 is the retaining ring structure; 3 is the heat insulation bracket; 31 is the air inlet pipe; 4 is the sealing head; 5 is the magnetic sealing ring; 51 is the heat-resistant rubber ring; 6 is the fluid distribution structure; 61 is the guide groove array. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] One embodiment of this utility model is as follows: Figures 1 to 3 As shown, the soldering iron tip body is made of copper-plated iron. A detachable nozzle sleeve 2 is fitted onto the outer side of the soldering iron tip body 1. A concentrating shroud 21 is provided at the bottom of the nozzle sleeve 2 near the welding part 11 at the front end of the soldering iron tip. Different concentrating shrouds with different apertures can be replaced according to different welding scenarios. A spiral guide groove 22 is provided on the side wall of the nozzle sleeve 2. A flow distribution structure 6 is provided at the heating component 12 position on the side of the soldering iron tip body 1 away from the welding part 11. A heat insulation bracket 3 is installed on the top of the soldering iron tip body 1. The heat insulation bracket is made of ceramic material and has an air inlet port for air intake. A magnetic sealing ring 5 and a heat-resistant rubber ring 51 are provided at the pipe interface to connect to an external hot air generator. The hot air temperature is adjustable from 200℃ to 480℃, and the flow rate ranges from 0.5L / min to 3L / min. The output end of the air inlet pipe 31 located inside the heat insulation bracket 3 abuts against the fluid distribution structure 6. A sealing head 4 is installed on the top of the heat insulation bracket 3. The hot air flow is evenly distributed to the spiral guide groove through the conical fluid distribution structure. The generated hot air vortex is focused on the area around the solder joint. The vortex isolates the solder vapor. The detachable sleeve can be used for different encapsulation soldering conditions. The hot air assists the residual heat to shorten the soldering time.

[0023] like Figure 4 As shown, the nozzle sleeve 2 is embedded in the bottom of the heat insulation bracket 3. In a preferred embodiment of this application, the spiral guide groove 22 has a spiral angle of 30° and a depth of 0.3mm. The cross-sectional shape of the spiral guide groove is trapezoidal, which changes the traditional direct injection hot air to tangential swirling flow and avoids solder splashing and clogging of the channel.

[0024] In a preferred embodiment of this application, the surface of the spiral guide groove 22 is coated with silicon carbide, the inner diameter of the outlet end of the energy-concentrating cover 21 is smaller than the maximum diameter of the soldering iron tip body 1, and the inner surface of the energy-concentrating cover 21 is coated with an infrared reflective layer with a reflectivity ≥90%. Specifically, when the temperature at the center of the solder joint reaches 620°C, the temperature at the outer edge (3mm) around it is 580°C, with a temperature difference of 40°C. This is a significant improvement compared to the temperature difference of approximately 160°C in the traditional soldering iron tip structure, thereby improving the soldering quality and extending the service life.

[0025] like Figure 6 As shown, the energy-concentrating cover 21 has a cross-shaped retaining ring structure 23 inside, which is used to limit the baffle above the soldering part 11 of the soldering iron tip, and the soldering part 11 of the soldering iron tip passes through the center of the retaining ring structure 23.

[0026] like Figure 7As shown, the fluid distribution structure 6 is an inverted cone shape. The conical surface of the fluid distribution structure 6 near the intake pipe 31 is provided with a circumferential guide groove array 61. The fluid distribution structure 6 is installed in conjunction with the chamfer at the bottom of the intake pipe 31. After the airflow is evenly dispersed by the fluid distribution structure, it forms a swirling jet along the spiral guide groove, which optimizes the uniformity of airflow distribution and reduces temperature fluctuations caused by turbulence.

[0027] The magnetic sealing ring 5 incorporates a permanent magnet array made of samarium-cobalt alloy. The operating temperature is ≥450℃, and the magnetic flux attenuation at high temperatures is <3%. Figure 5 As shown, the heat-resistant rubber ring 51 is embedded in the sealing groove on the surface of the magnetic sealing ring 5.

[0028] The working principle of this embodiment is as follows: The soldering iron tip is inserted into the nozzle sleeve. The baffle at the top of the soldering section is limited by the retaining ring structure inside the energy-concentrating cover. The heating element at the top of the soldering iron tip is connected to the fluid distribution structure. After the top conical surface of the fluid distribution structure is chamfered against the output end of the air inlet pipe, the flange at the top of the nozzle sleeve is fixed to the bottom of the heat insulation bracket with bolts. The magnetic sealing ring attracts the outlet of the external hot air generator through magnetic force, and the heat-resistant rubber ring is squeezed during the attraction process to achieve a seal. Taking the desoldering of a QFN packaged chip as an example, the soldering iron tip contacts the corner pin of the chip, and the hot air vortex is turned on to heat the center of the chip. After 3 seconds, the solder at the bottom of the chip melts evenly, and the chip is removed with a vacuum pen.

[0029] Several points need to be clarified: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly, and can refer to mechanical or electrical connections, or internal connections between two components, or direct connections. Terms such as "upper," "lower," "left," and "right" are only used to indicate relative positional relationships, and the relative positional relationships may change when the absolute position of the described objects changes. Second, in this document, relational terms such as "first" and "second" are only used to distinguish one entity from another entity, and do not necessarily require or imply any such actual relationship or order between these entities.

[0030] The above examples are merely illustrative of this utility model and do not constitute a limitation on the scope of protection of this utility model. All designs that are the same as or similar to this utility model are within the scope of protection of this utility model.

Claims

1. A soldering iron tip assembly with a hot air channel, comprising a soldering iron tip body (1), characterized in that, The soldering iron tip body (1) is fitted with a detachable nozzle sleeve (2) on the outside. A concentrating cover (21) is provided on the bottom of the nozzle sleeve (2) near the outside of the soldering iron tip front welding part (11). A spiral guide groove (22) is provided on the side wall of the nozzle sleeve (2). A fluid distribution structure (6) is provided on the heating component (12) on the side of the soldering iron tip body (1) away from the welding part (11). A heat insulation bracket (3) is installed on the top of the soldering iron tip body (1). An air inlet is provided on the heat insulation bracket (3). A magnetic sealing ring (5) and a heat-resistant rubber ring (51) are provided at the air inlet to connect to an external hot air generator. The output end of the air inlet pipe (31) located inside the heat insulation bracket (3) abuts against the fluid distribution structure (6). A sealing head (4) is installed on the top of the heat insulation bracket (3).

2. A soldering iron tip assembly with a hot air channel according to claim 1, characterized in that, The nozzle sleeve (2) is embedded in the bottom of the heat insulation bracket (3), and the spiral guide groove (22) has a spiral angle of 15° to 45° and a depth of 0.2mm to 0.5mm.

3. A soldering iron tip assembly with a hot air channel according to claim 2, characterized in that, The surface of the spiral guide groove (22) is coated with silicon carbide.

4. A soldering iron tip assembly with a hot air channel according to claim 1, characterized in that, The inner diameter of the outlet end of the energy-concentrating cover (21) is smaller than the maximum diameter of the soldering iron tip body (1), and the inner surface of the energy-concentrating cover (21) is coated with an infrared reflective layer with a reflectivity ≥90%.

5. A soldering iron tip assembly with a hot air channel according to claim 4, characterized in that, The energy-concentrating cover (21) is provided with a cross-shaped retaining ring structure (23) inside, which is used to limit the baffle above the soldering iron tip welding part (11) and the soldering iron tip welding part (11) passes through the center of the retaining ring structure (23).

6. A soldering iron tip assembly with a hot air channel according to claim 1, characterized in that, The fluid distribution structure (6) is an inverted cone shape. A guide groove array (61) is provided circumferentially on the cone surface of the fluid distribution structure (6) near the air intake pipe (31). The fluid distribution structure (6) is installed in conjunction with the chamfer at the bottom of the air intake pipe (31).

7. A soldering iron tip assembly with a hot air channel according to claim 1, characterized in that, The magnetic sealing ring (5) has a built-in permanent magnet array. The permanent magnet array is made of samarium cobalt alloy and has a working temperature of ≥450℃. The heat-resistant rubber ring (51) is embedded in the sealing groove on the surface of the magnetic sealing ring (5).

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