CN215145483U - Welding heating device - Google Patents
Welding heating device Download PDFInfo
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- CN215145483U CN215145483U CN202120779560.7U CN202120779560U CN215145483U CN 215145483 U CN215145483 U CN 215145483U CN 202120779560 U CN202120779560 U CN 202120779560U CN 215145483 U CN215145483 U CN 215145483U
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Abstract
The utility model discloses a welding heating device, including heating element, wind wheel subassembly and air current wind channel, heating element's gas vent and the air inlet intercommunication of wind wheel subassembly, the gas vent and the air current wind channel intercommunication of wind wheel subassembly, wind wheel unit mount in the heating element top, and heating element installs in the air current wind channel, and the bottom in air current wind channel is equipped with the gas vent. The air current fully heats behind heating element, the gaseous intensive mixing that will heat is even through the effect of wind wheel subassembly, the air current after the mixture reaches the unanimous effect of temperature, the wind wheel subassembly will heat the gaseous circuit board that needs welding electronic component through the air current wind channel transport, the hot gas flow of the less difference in temperature can be obtained on the surface of the components and parts of equidimension not above the circuit board, the solder paste that makes circuit board electronic components and parts pin department is heated and melts, thereby let the pad on electronic components and parts and the circuit board combine together reliably through the solder paste alloy, improve the welding quality of product.
Description
Technical Field
The utility model relates to an electronic manufacturing technical field, in particular to welding heating device.
Background
Along with the continuous enhancement of the functions of electronic products, the integration level of a printed circuit board is higher and higher, the power of components is higher and higher, especially in the fields of communication, automobiles, rail traffic, photovoltaic, military, aerospace and the like, the applications of high-power devices such as transistors, video power supplies, LEDs, IGBTs, MOSFETs and the like are more and more, the packaging forms of the components are BGA, QFN, LGA, CSP packaging and the like generally, the common characteristics of the components are that the heat absorption capacity of the components is higher, and the welding quality directly influences the reliability of the products.
In the existing welding process, the hot reflux heating module structure has more internal airflow blocking structures, and the air speed difference of the air flow generated by the air blower after passing through the rectifying plate is larger, so that a large temperature difference can be generated when the air flow blows to the electronic substrate, and the soldering paste alloy on the electronic component and the circuit board can not be completely melted, so that the electronic component and the circuit board can not be firmly welded, and the serious welding quality problem is caused.
Therefore, how to solve the problem that the conventional thermal reflow heating module in the circuit board soldering process cannot provide stable and uniform hot air flow is a technical problem to be solved urgently by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a welding heating device optimizes through the hot reflux heating module structure among the welding process to current circuit board, improves the welding quality among the welding process of circuit board.
In order to solve the technical problem, the utility model provides a welding heating device, including heating element, wind wheel subassembly and air current wind channel, heating element's gas vent with the air inlet intercommunication of wind wheel subassembly, the gas vent of wind wheel subassembly with air current wind channel intercommunication, the wind wheel subassembly install in the heating element top, heating element install in the air current wind channel, just the bottom in air current wind channel is equipped with the gas vent.
Preferably, the air flow return air inlet is communicated with the air inlet of the heating assembly.
Preferably, the airflow return air inlets are symmetrically arranged along two sides of the heating assembly.
Preferably, the heating assembly is a heating rod.
Preferably, a bevel baffle is arranged below the heating assembly.
Preferably, the inclined plane baffle plate and the bottom plane of the airflow air duct form an included angle of 30-60 degrees.
Preferably, a hot air rectifying plate is mounted on a bottom exhaust port of the airflow duct.
Preferably, the hot air rectifying plate is provided with exhaust holes distributed in a cross manner.
The utility model provides a welding heating device, including heating element, wind wheel subassembly and air current wind channel, heating element's gas vent and the air inlet intercommunication of wind wheel subassembly, the gas vent and the air current wind channel intercommunication of wind wheel subassembly, wind wheel unit mount in the heating element top, and heating element installs in the air current wind channel, and the bottom in air current wind channel is equipped with the gas vent. The gas flow in the heating cavity in the heating module forms a closed loop structure under the action of the air wheel component; the air flow in the cavity is fully heated after passing through the heating assembly, the heated air is fully and uniformly stirred under the action of the air wheel assembly, the mixed air flow achieves the effect of consistent temperature, meanwhile, the air wheel assembly applies certain pressure to the uniformly mixed heated air, the heated air is conveyed to a circuit board needing to be welded with electronic elements through an air flow air channel under certain pressure, the surface of the elements with different sizes on the circuit board can obtain smaller temperature difference, soldering paste at pins of the electronic elements of the circuit board is heated and melted, so that the electronic elements and pads on the circuit board are reliably combined together through soldering paste alloy, the welding process is completed, and the product can obtain higher welding quality.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic overall structure diagram of an embodiment of the present invention;
FIG. 2 is a cross-sectional view of the structure shown in FIG. 1;
FIG. 3 is a side cross-sectional view of the structure shown in FIG. 1;
fig. 4 is a cross-sectional view of the structure shown in fig. 1.
Wherein, in fig. 1-4:
the air conditioner comprises a heating assembly-1, an air wheel assembly-2, an air flow duct-3, an air flow return inlet-4 and a hot air rectifying plate-5.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1 to 4, fig. 1 is a schematic view of an overall structure of an embodiment of the present invention; FIG. 2 is a cross-sectional view of the structure shown in FIG. 1; FIG. 3 is a side cross-sectional view of the structure shown in FIG. 1; fig. 4 is a cross-sectional view of the structure shown in fig. 1. Wherein the arrows in the figure represent the gas flow direction.
The utility model provides an among the concrete implementation mode, mainly include heating element 1, wind wheel subassembly 2 and air current wind channel 3, heating element 1's gas vent and wind wheel subassembly 2's air inlet intercommunication, wind wheel subassembly 2's gas vent and air current wind channel 3 intercommunication, wind wheel subassembly 2 is installed in heating element 1 top, and heating element 1 is installed in air current wind channel 3, and the bottom in air current wind channel 3 is equipped with the gas vent.
Wherein, heating element 1 is arranged in heating the gas in the heating module of welding and heats, and wind wheel subassembly 2 is used for stirring the gas after the heating in order to guarantee that the welding has the temperature uniformity with the hot gas, and air current wind channel 3 is used for dredging the hot gas after the mixing to the circuit board that needs welding electronic component.
Specifically, in the actual application process, the gas flow inside the heating cavity in the heating module forms a closed loop structure under the action of the air wheel component 2; the method comprises the steps that firstly, airflow inside a cavity is fully heated after passing through a heating assembly 1, heated gas is fully stirred uniformly under the action of an air wheel assembly 2, the mixed airflow achieves the effect of consistent temperature, meanwhile, the air wheel assembly 2 exerts certain pressure on the uniformly mixed heated gas, the heated gas is conveyed to a circuit board needing to be welded with electronic components through an airflow air duct 3 under certain pressure, smaller temperature difference can be obtained on the surfaces of the components with different sizes on the circuit board, soldering paste at pins of the electronic components of the circuit board is heated and melted, and therefore the electronic components and pads on the circuit board are reliably combined together through soldering paste alloy, the welding process is completed, and products are enabled to obtain higher welding quality.
In order to realize uninterrupted welding process by recycling gas flow, the welding heating device also comprises a gas flow air return opening 4 communicated with the air inlet of the heating assembly 1; the gas after heating of heating element 1 reaches on the circuit board, make the solder paste of circuit board electronic components pin department be heated and melt, thereby let the pad on electronic components and the circuit board combine together reliably through the solder paste alloy, at this moment, because the effect that the solder paste alloy heat absorption on the circuit board melted, the gas air current cooling, and return the heating cavity in the heating module through the air current return air inlet 4 of welding heating device both sides, and then continue to heat the gas after the cooling through heating element 1, the hot gas air current supply of sustainable welding process that satisfies, guarantee incessant, last welding process.
It should be noted that the airflow return air inlets 4 are symmetrically arranged along two sides of the heating assembly 1; because the gas flow after cooling returns and needs heating of heating element 1 behind the heating cavity, at this moment, through evenly setting up air current return air inlet 4, can make the gas flow after cooling return the heating cavity from heating element 1 both sides uniformly to reached heating element 1 can carry out the effect of heating to the gas flow uniformly, firstly guaranteed the homogeneity of gas flow heating, secondly guaranteed heating element 1's work efficiency.
In order to improve the heating efficiency and the effect of the heating assembly 1, the heating assembly 1 is arranged as a heating rod which is of a cylinder heating structure, when the cooled gas flow returns to the heating cavity, the contact surface of the gas flow can be increased through the surface of the heating assembly 1 because the heating assembly 1 is of the cylinder heating structure, the gas flow is fully and uniformly heated, and the heating efficiency and the heating effect of the heating assembly 1 are ensured.
Furthermore, an inclined baffle is arranged below the heating component 1, and the included angle between the inclined baffle and the bottom plane of the airflow duct 3 is 30-60 degrees; because the hot air flow needs to reach the circuit board, the inclined baffle plate guides the hot air flow, so that the hot air flow can be more uniformly dispersed on the circuit board, solder paste alloys of bonding pads at different positions of the circuit board can be more easily melted, and the quality of a welding process can be improved.
Furthermore, a hot air rectifying plate 5 is arranged on an exhaust port at the bottom of the airflow duct 3; the hot air rectifying plate 5 is provided with exhaust holes which are distributed in a cross way; when hot air flow reaches the upper part of the circuit board under the guidance of the air flow duct 3 and the inclined baffle plate, the hot air flow is uniformly dispersed through the exhaust holes of the hot air rectifying plate 5, so that the hot air flow can be uniformly dispersed, the hot air flow can be uniformly dispersed on the circuit board, soldering paste alloys of bonding pads at different positions of the circuit board can be easily melted, and the welding process quality can be improved.
To sum up, the welding heating device that this embodiment provided mainly includes heating element, wind wheel subassembly and air current wind channel, heating element's gas vent and the air inlet intercommunication of wind wheel subassembly, the gas vent and the air current wind channel intercommunication of wind wheel subassembly, and the wind wheel subassembly is installed in the heating element top, and heating element installs in the air current wind channel, and the bottom in air current wind channel is equipped with the gas vent. The gas flow in the heating cavity in the heating module forms a closed loop structure under the action of the air wheel component; the air flow in the cavity is fully heated after passing through the heating assembly, the heated air is fully and uniformly stirred under the action of the air wheel assembly, the mixed air flow achieves the effect of consistent temperature, meanwhile, the air wheel assembly applies certain pressure to the uniformly mixed heated air, the heated air is conveyed to a circuit board needing to be welded with electronic elements through an air flow air channel under certain pressure, the surface of the elements with different sizes on the circuit board can obtain smaller temperature difference, soldering paste at pins of the electronic elements of the circuit board is heated and melted, so that the electronic elements and pads on the circuit board are reliably combined together through soldering paste alloy, the welding process is completed, and the product can obtain higher welding quality.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. The utility model provides a welding heating device, its characterized in that, includes heating element, wind wheel subassembly and air current wind channel, heating element's gas vent with the air inlet intercommunication of wind wheel subassembly, the gas vent of wind wheel subassembly with air current wind channel intercommunication, the wind wheel subassembly install in the heating element top, heating element install in the air current wind channel, just the bottom in air current wind channel is equipped with the gas vent.
2. The welding heating device of claim 1, further comprising an air return vent in communication with the air inlet of the heating assembly.
3. The welding heating device of claim 2, wherein the air flow return vents are symmetrically disposed along both sides of the heating assembly.
4. The welding heating apparatus of claim 1, wherein the heating assembly is a heating rod.
5. The welding heating device of claim 1, wherein a beveled baffle is positioned below the heating assembly.
6. The welding heating device of claim 5, wherein the angle between the beveled baffle and the bottom plane of the airflow duct is between 30 ° and 60 °.
7. The welding heating device of any one of claims 1 to 6, wherein a hot air rectifying plate is mounted on a bottom exhaust port of the airflow duct.
8. The welding heating device of claim 7, wherein the hot air flow straightening plate is provided with exhaust holes distributed in a cross manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120779560.7U CN215145483U (en) | 2021-04-15 | 2021-04-15 | Welding heating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120779560.7U CN215145483U (en) | 2021-04-15 | 2021-04-15 | Welding heating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215145483U true CN215145483U (en) | 2021-12-14 |
Family
ID=79360148
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120779560.7U Active CN215145483U (en) | 2021-04-15 | 2021-04-15 | Welding heating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215145483U (en) |
-
2021
- 2021-04-15 CN CN202120779560.7U patent/CN215145483U/en active Active
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