LED lamp strip reflow soldering with heating protection function

Abstract

The utility model relates to the technical field of LED circuit board welding equipment, in particular to LED lamp strip reflow soldering with a heating protection function, which comprises a reflow soldering main body, a lamp strip supporting net and a vapor chamber are respectively and fixedly arranged at the top of the reflow soldering main body, the lamp strip supporting net is used for bearing an LED lamp strip, and the vapor chamber is positioned at the bottom of the lamp strip supporting net; a constant-temperature box used for blowing out constant-temperature hot air upwards is fixedly arranged in the middle of the reflow soldering body, and a constant-temperature air heater is arranged in the constant-temperature box. The first air cylinder drives the movable air outlet partition plate to quickly move, the air outlet holes between the movable air outlet partition plate and the fixed air outlet partition plate are mutually blocked, and hot air flow cannot penetrate through the air outlet holes, so that the vapor chamber cannot be heated, the situation that the vapor chamber continuously heats the same position of the LED lamp strip is avoided, and the service life of the LED lamp strip is prolonged. Therefore, the situation of continuous high-temperature damage to the LED lamp strip in the stagnation state is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to LED circuit board welding equipment technical field, specifically is LED lamp area reflow soldering with heating protection function. BACKGROUND

[0002] LED lamp is a piece of electrode luminous semiconductor material chip, and the PCB board and chip of LED lamp area usually adopt reflow soldering machine to carry out welding, and the reflow soldering furnace is a kind of welding equipment in SMT industry. It can provide automatic and stable heating environment, so that the soldering paste in the hearth is heated and melted, so that the pre-installed electrical components on the PCB board of LED lamp and PCB board are reliably combined together through soldering alloy, and after welding, the PCB board needs to be cooled and taken out.

[0003] But the prior art in actual use, once the failure shutdown maintenance, since the reflow soldering equipment needs a certain time to warm up after shutdown, so the reflow soldering equipment does not stop in short-term failure, which will make the LED lamp area in the reflow soldering equipment inside be damaged due to stagnation in high-temperature environment. UTILITY MODEL CONTENT

[0004] The utility model aims at providing LED lamp area reflow soldering with heating protection function to solve the problems raised in the above background.

[0005] To achieve the above object, the utility model provides the following technical scheme: LED lamp area reflow soldering with heating protection function, comprising:

[0006] The top of the reflow soldering main body is fixedly provided with a lamp area support net and a heat spreader respectively, the lamp area support net is used for bearing LED lamp area, and the heat spreader is located at the bottom of the lamp area support net;

[0007] The middle part of the reflow soldering main body is fixedly provided with a constant-temperature box for blowing out constant-temperature hot air upward, and the constant-temperature box is provided with a constant-temperature air blower;

[0008] The heating protection assembly is fixedly arranged between the heat spreader and the constant-temperature box corresponding to the reflow soldering main body, the heating protection assembly comprises a movable air outlet baffle and a fixed air outlet baffle, the movable air outlet baffle is movably attached to the top of the fixed air outlet baffle, and the middle part of the movable air outlet baffle and the fixed air outlet baffle is respectively provided with an air outlet hole;

[0009] When the air outlet holes corresponding to the movable air outlet baffle and the fixed air outlet baffle coincide, the hot air of the constant-temperature box penetrates the movable air outlet baffle and the fixed air outlet baffle and blows to the heat spreader to heat the lamp area;

[0010] And when the outflow hole corresponding to the position of the movable outflow baffle and the fixed outflow baffle is staggered, the hot air of the thermostat does not heat the lamp strip at this time.

[0011] Preferably, the uniform heating plate is a pure copper material member, so as to uniformly heat the lamp strip on the lamp strip support net.

[0012] Preferably, the heating protection assembly further comprises a first air cylinder fixedly connected to one end of the movable outflow baffle, and the fixed outflow baffle and the first air cylinder are both fixedly connected to the middle part of the reflow soldering main body, so that the first air cylinder drives the movable outflow baffle to move on the top of the fixed outflow baffle.

[0013] Preferably, the inner wall of the thermostat is provided with a temperature sensor to monitor the temperature change inside the thermostat in real time, and the inner wall of the thermostat is movably connected with a thermostat fan fixing assembly, the thermostat fan fixing assembly comprises a thermostat fan cover top plate, a thermostat fan cover air deflector and a thermostat fan cover bottom plate, the thermostat fan cover air deflector is fixedly connected between the thermostat fan cover top plate and the thermostat fan cover bottom plate, and the thermostat fan is fixedly connected between the middle part of the thermostat fan cover top plate and the thermostat fan cover bottom plate, so that the hot air generated by the fan is blown out through the gap between the thermostat fan cover air deflectors.

[0014] Preferably, the thermostat is a box-shaped structure with a hollow bottom, the bottom of the thermostat is provided with an emptying cavity, the bottom of the inner wall of the thermostat is provided with a containing hole in communication with the emptying cavity, and the thermostat fan cover air deflector is movably connected to the inner wall of the containing hole, the diameters of the thermostat fan cover top plate and the thermostat fan cover bottom plate are greater than the inner wall of the containing hole, and the opposite ends of the opposite surfaces of the thermostat fan cover top plate and the thermostat fan cover bottom plate are both provided with sealing rings, so that the thermostat fan cover top plate and the thermostat fan cover bottom plate are tightly fitted when they are respectively located at one end of the corresponding containing hole of the thermostat, thereby playing a sealing role, and the bottom of the thermostat is provided with an exhaust hole corresponding to the inside of the emptying cavity, so that the excess hot air is discharged.

[0015] Preferably, the bottom of the thermostat is fixedly embedded with an installation barrel in communication with the inside of the emptying cavity, the inner wall of the installation barrel is fixedly connected with a second air cylinder, and the output shaft of the second air cylinder is fixedly connected to the bottom of the thermostat fan cover bottom plate.

[0016] Preferably, the inner wall of the emptying cavity is fixedly connected with a plurality of guide columns, the middle part of the thermostat fan cover bottom plate corresponding to the position of the guide column is provided with a guide hole, and the guide column is movably connected to the inner wall of the guide hole.

[0017] Compared with the prior art, the thermostat has the advantages that:

[0018] 1. The utility model discloses a first cylinder drives the movable air outlet baffle to move fast, and makes the air outlet hole between movable air outlet baffle and fixed air outlet baffle be mutually blocked, and hot air current cannot penetrate the air outlet hole, thereby will not heat the uniform heating plate, thereby avoids the uniform heating plate to the LED lamp area of same position sustained heating condition occurs, thereby avoids the high temperature damage of stagnant state's LED lamp area occurs, 2, the utility model discloses still through the sealing ring of constant temperature fan cover top board and constant temperature fan cover bottom board opposite face setting, make in the heating state of LED lamp area, the sealing ring of constant temperature fan cover bottom board top is tightly combined with the inner wall of the accommodating hole position of exhaust cavity correspondence, the heat of constant temperature fan is completely spread in the inner wall of constant temperature box through the guidance of constant temperature fan cover air baffle even diffusion, and penetrates the air outlet hole and heats the uniform heating plate, thereby through the heating of LED lamp area on the lamp area support net of uniform heating plate, in the heating protection state of LED stagnation, the sealing ring of constant temperature fan cover top board bottom is tightly combined with the inner wall of the accommodating hole position of constant temperature box correspondence, the heat of constant temperature fan is completely spread to the inside of exhaust cavity, and is discharged through the exhaust hole, avoids the height damage of sudden rise to LED lamp area. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is whole structure schematic diagram of LED lamp area reflow soldering of the utility model with heating protection function;

[0020] Figure 2 It is partial schematic diagram of LED lamp area reflow soldering of the utility model with heating protection function;

[0021] Figure 3 It is partial explosion of LED lamp area reflow soldering of the utility model with heating protection function Figure 1 ;

[0022] Figure 4 It is partial explosion of LED lamp area reflow soldering of the utility model with heating protection function Figure 2 ;

[0023] Figure 5 It is constant temperature box structure sectional view of LED lamp area reflow soldering of the utility model with heating protection function;

[0024] Figure 6 It is partial sectional view of constant temperature box structure of LED lamp area reflow soldering of the utility model with heating protection function;

[0025] Figure 7 It is explosion drawing of constant temperature box structure of LED lamp area reflow soldering of the utility model with heating protection function.

[0026] In the diagram: 1. Reflow soldering body; 2. LED strip support mesh; 3. Heat spreader; 4. Movable air outlet baffle; 5. Fixed air outlet baffle; 6. Air outlet; 7. First cylinder; 8. Temperature control chamber; 9. Temperature control fan cover top plate; 10. Temperature control fan cover air guide plate; 11. Temperature control fan cover bottom plate; 12. Receiving hole; 13. Guide column; 14. Guide hole; 15. Second cylinder; 16. Exhaust cavity; 17. Mounting bucket. Detailed Implementation

[0027] 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.

[0028] Please see Figures 1-7 This utility model provides a technical solution: LED strip reflow soldering with heating protection function, comprising:

[0029] The reflow soldering body 1 has a LED strip support mesh 2 and a heat spreader plate 3 fixedly mounted on its top. The LED strip support mesh 2 is used to support the LED strip, and the heat spreader plate 3 is located at the bottom of the LED strip support mesh 2. The heat spreader plate 3 is made of pure copper to ensure uniform heating of the LED strip on the LED strip support mesh 2.

[0030] A constant temperature chamber 8 for blowing constant temperature hot air upward is fixedly installed in the middle of the reflow soldering body 1, and a constant temperature hot air blower is installed inside the constant temperature chamber 8.

[0031] When the above structure is in use, the LED light strip is pulled to move on top of the light strip support net 2 by the traction device. At this time, the hot air blown out by the constant temperature hot air blower inside the constant temperature box 8 will heat the heat spreader 3, so that the heat spreader 3 can heat the LED light strip evenly and realize the welding operation of the LED light strip.

[0032] A heating protection component is fixedly provided between the reflow soldering body 1 and the corresponding heat spreader 3 and constant temperature chamber 8. The heating protection component includes a movable air outlet baffle 4 and a fixed air outlet baffle 5. The movable air outlet baffle 4 is movably attached to the top of the fixed air outlet baffle 5. Air outlet holes 6 are respectively opened in the middle of the movable air outlet baffle 4 and the fixed air outlet baffle 5. The heating protection component also includes a first cylinder 7 fixedly installed at one end of the movable air outlet baffle 4. The fixed air outlet baffle 5 and the first cylinder 7 are respectively fixedly installed in the middle of the reflow soldering body 1 so that the first cylinder 7 drives the movable air outlet baffle 4 to move on the top of the fixed air outlet baffle 5.

[0033] When the first cylinder 7 drives the movable air outlet baffle 4 to move in the middle of the reflow soldering body 1, the air outlet 6 in the middle of the movable air outlet baffle 4 and the air outlet 6 in the middle of the fixed air outlet baffle 5 coincide. At this time, the hot air blown out by the constant temperature hot air blower inside the constant temperature box 8 will pass through the air outlet 6 in the middle of the movable air outlet baffle 4 and the fixed air outlet baffle 5 and heat the heat spreader 3.

[0034] When the first cylinder 7 drives the movable air outlet baffle 4 to move rapidly, the air outlet 6 in the middle of the movable air outlet baffle 4 and the air outlet 6 in the middle of the fixed air outlet baffle 5 intersect each other. At this time, the air outlets 6 between the movable air outlet baffle 4 and the fixed air outlet baffle 5 are blocked, and the airflow cannot pass through the air outlets 6. That is, the hot air blown out by the constant temperature hot air blower inside the constant temperature chamber 8 will not heat the heat spreader 3, thereby avoiding the situation where the heat spreader 3 continuously heats the same position of the LED light strip, thus avoiding the situation where the LED light strip in the stationary state is continuously damaged by high temperature.

[0035] The inner wall of the constant temperature chamber 8 is equipped with a temperature sensor to monitor the temperature changes inside the chamber in real time. A constant temperature fan fixing assembly is movably connected to the inner wall of the constant temperature chamber 8. The constant temperature fan fixing assembly includes a constant temperature fan cover top plate 9, a constant temperature fan cover air guide plate 10, and a constant temperature fan cover bottom plate 11. The constant temperature fan cover air guide plate 10 is fixedly installed between the constant temperature fan cover top plate 9 and the constant temperature fan cover bottom plate 11, and the constant temperature fan is fixedly installed between the constant temperature fan cover top plate 9 and the constant temperature fan cover bottom plate 11. The hot air generated by the fan is blown out through the gap between the air guide plates 10 of the constant temperature fan cover at the middle position between the plates 11. The constant temperature box 8 is a box-type structure with a hollow bottom. The bottom of the constant temperature box 8 has an exhaust cavity 16. The bottom of the inner wall of the constant temperature box 8 has a receiving hole 12 that communicates with the exhaust cavity 16. The air guide plates 10 of the constant temperature fan cover are movably connected to the inner wall of the receiving hole 12. The diameter of the top plate 9 and the bottom plate 11 of the constant temperature fan cover is larger than the inner wall of the receiving hole 12. Furthermore, sealing rings are provided at one end of the opposing surfaces of the top plate 9 and the bottom plate 11 of the constant temperature fan cover, so that the top plate 9 and the bottom plate 11 of the constant temperature fan cover can seal when they are respectively attached to one end of the constant temperature box 8 at the corresponding receiving hole 12 position. The bottom of the constant temperature box 8 has an exhaust hole corresponding to the inside of the exhaust cavity 16 to exhaust excess hot air. An installation bucket 17 that communicates with the inside of the exhaust cavity 16 is fixedly embedded in the bottom of the constant temperature box 8. A second cylinder 15 is fixedly installed on the inner wall, and the output shaft of the second cylinder 15 is fixedly installed on the bottom of the constant temperature fan cover base plate 11. Multiple guide columns 13 are fixedly installed on the inner wall of the exhaust cavity 16. A guide hole 14 is opened in the middle of the constant temperature fan cover base plate 11 corresponding to the position of the guide column 13, and the guide column 13 is movably connected to the inner wall of the guide hole 14. By setting the guide column 13 and the guide hole 14, the movement of the constant temperature fan cover base plate 11 and the constant temperature fan can be guided.

[0036] When the above structure is in use, in the state of heating the LED light strip, the sealing ring at the top of the constant temperature fan cover bottom plate 11 is tightly fitted with the inner wall of the corresponding receiving hole 12 position of the exhaust cavity 16. At this time, the heat of the constant temperature fan is completely and evenly diffused on the inner wall of the constant temperature box 8 through the guide plate 10 of the constant temperature fan cover, and heats the heat spreader 3 through the air outlet 6, thereby heating the LED light strip on the light strip support net 2 through the heat spreader 3. In the heating protection state when the LED stops, the sealing ring at the bottom of the constant temperature fan cover top plate 9 is tightly fitted with the inner wall of the corresponding receiving hole 12 position of the constant temperature box 8. At this time, the heat of the constant temperature fan is completely diffused into the interior of the exhaust cavity 16 and discharged through the exhaust hole, avoiding damage to the LED light strip due to sudden height increase.

[0037] Working principle: In use, this utility model uses a traction device to pull the LED light strip to move on top of the light strip support net 2. At this time, the first cylinder 7 drives the movable air outlet baffle 4 to move in the middle of the reflow soldering body 1, so that the air outlet 6 in the middle of the movable air outlet baffle 4 and the air outlet 6 in the middle of the fixed air outlet baffle 5 coincide. At this time, the hot air blown out by the constant temperature hot air blower inside the constant temperature box 8 will pass through the air outlet 6 in the middle of the movable air outlet baffle 4 and the fixed air outlet baffle 5, and heat the heat spreader 3, so that the heat spreader 3 can heat the LED light strip evenly, and realize the welding operation of the LED light strip.

[0038] When maintenance is required, the first cylinder 7 drives the movable air outlet baffle 4 to move quickly, and the air outlet 6 in the middle of the movable air outlet baffle 4 and the air outlet 6 in the middle of the fixed air outlet baffle 5 intersect each other. At this time, the air outlets 6 between the movable air outlet baffle 4 and the fixed air outlet baffle 5 are blocked, and the airflow cannot pass through the air outlets 6. That is, the hot air blown out by the constant temperature hot air blower inside the constant temperature box 8 will not heat the heat spreader 3, thereby avoiding the situation where the heat spreader 3 continuously heats the same position of the LED light strip, thus avoiding the situation where the LED light strip in the stationary state is continuously damaged by high temperature.

[0039] The constant temperature environment inside the constant temperature chamber 8 is maintained by the temperature sensor and the constant temperature fan. However, when the movable air outlet baffle 4 moves quickly and the air outlet 6 between the movable air outlet baffle 4 and the fixed air outlet baffle 5 is blocked, although the constant temperature environment of the constant temperature chamber 8 is maintained, the temperature adjustment of the constant temperature fan is not timely when the air outlet 6 is blocked quickly, which can cause the temperature inside the constant temperature chamber 8 to rise suddenly. At this time, the first cylinder 7 moves and the second cylinder 15 drives the bottom plate 11 of the constant temperature fan cover to move downward, and the bottom plate 11 of the constant temperature fan cover drives the constant temperature fan to move downward. The state of the bottom plate 11 of the constant temperature fan cover being tightly attached to the inner wall of the exhaust cavity 16 changes to the state of the bottom of the top plate 9 of the constant temperature fan cover being tightly attached to the inner wall of the corresponding receiving hole 12 of the constant temperature chamber 8. At this time, the hot air generated by the constant temperature fan will be discharged from the exhaust hole in the exhaust cavity 16, without damaging the LED light strip that is stationary on the light strip support net 2.

[0040] The guide post 13 and guide hole 14 guide the movement of the constant temperature fan cover bottom plate 11 and the constant temperature fan. The sealing rings on the opposite sides of the constant temperature fan cover top plate 9 and the constant temperature fan cover bottom plate 11 ensure that when the LED light strip is being heated, the sealing ring at the top of the constant temperature fan cover bottom plate 11 is tightly fitted to the inner wall of the corresponding receiving hole 12 in the exhaust cavity 16. At this time, the heat from the constant temperature fan is evenly diffused on the inner wall of the constant temperature box 8 through the guide plate 10 of the constant temperature fan cover, and heats the heat spreader 3 through the air outlet 6. Thus, the heat spreader 3 heats the LED light strip on the light strip support net 2. When the LED is in the heating protection state and the LED is stopped, the sealing ring at the bottom of the constant temperature fan cover top plate 9 is tightly fitted to the inner wall of the corresponding receiving hole 12 in the constant temperature box 8. At this time, the heat from the constant temperature fan is completely diffused into the interior of the exhaust cavity 16 and discharged through the exhaust hole, avoiding damage to the LED light strip due to sudden height increase.

[0041] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0042] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. LED lamp strip reflow soldering with heating protection function, characterized in that: The application relates to a reflow soldering main body (1), the top of the reflow soldering main body (1) is respectively fixed with a lamp strip supporting net (2) and a heat plate (3), the lamp strip supporting net (2) is used for bearing an LED lamp strip, and the heat plate (3) is located at the bottom of the lamp strip supporting net (2). The middle part of the reflow soldering main body (1) is fixed with a constant-temperature box (8) used for blowing out constant-temperature hot air upwards, and the inside of the constant-temperature box (8) is provided with a constant-temperature air blower. The heating protection assembly is fixed between the heat plate (3) and the constant-temperature box (8) of the reflow soldering main body (1), the heating protection assembly comprises a movable air outlet baffle (4) and a fixed air outlet baffle (5), the movable air outlet baffle (4) is movably attached to the top of the fixed air outlet baffle (5), air outlet holes (6) are formed in the middle parts of the movable air outlet baffle (4) and the fixed air outlet baffle (5) respectively, When the air outlet holes (6) of the movable air outlet baffle (4) and the fixed air outlet baffle (5) at the corresponding positions coincide, the hot air of the constant-temperature box (8) penetrates through the movable air outlet baffle (4) and the fixed air outlet baffle (5) to blow towards the heat plate (3) to heat the lamp strip, When the air outlet holes (6) of the movable air outlet baffle (4) and the fixed air outlet baffle (5) at the corresponding positions stagger, the hot air of the constant-temperature box (8) does not heat the lamp strip. The heat plate (3) is a pure copper component, so that the lamp strip on the lamp strip supporting net (2) can be uniformly heated.

2. The LED lamp strip reflow soldering with heating protection function according to claim 1, characterized in that: The heating protection assembly further comprises a first air cylinder (7) fixedly connected to one end of the movable air outlet baffle (4), the fixed air outlet baffle (5) and the first air cylinder (7) are fixedly connected to the middle part of the reflow soldering main body (1) respectively, so that the first air cylinder (7) drives the movable air outlet baffle (4) to move on the top of the fixed air outlet baffle (5).

3. The LED lamp strip reflow soldering with heating protection function according to claim 2, characterized in that: The inner wall of the constant-temperature box (8) is provided with a temperature sensor for monitoring the temperature change in the constant-temperature box (8) in real time, the inner wall of the constant-temperature box (8) is movably connected with a constant-temperature air blower fixing assembly, the constant-temperature air blower fixing assembly comprises a constant-temperature air blower cover top plate (9), a constant-temperature air blower cover air deflector (10) and a constant-temperature air blower cover bottom plate (11), the constant-temperature air blower cover air deflector (10) is fixedly connected between the constant-temperature air blower cover top plate (9) and the constant-temperature air blower cover bottom plate (11), and a constant-temperature air blower is fixedly connected to the middle part between the constant-temperature air blower cover top plate (9) and the constant-temperature air blower cover bottom plate (11), so that the hot air generated by the air blower is blown out through the gaps between the constant-temperature air blower cover air deflectors (10).

4. The LED lamp strip reflow soldering with heating protection function according to claim 3, characterized in that: ​ 5. The LED lamp strip reflow soldering with heating protection function according to claim 4, characterized in that: The constant temperature box (8) is a box structure with a hollow bottom, the bottom of the constant temperature box (8) is provided with a discharge cavity (16), the bottom of the inner wall of the constant temperature box (8) is provided with a containing hole (12) in communication with the discharge cavity (16), and the constant temperature fan cover air deflector (10) is movably connected to the inner wall of the containing hole (12), the diameter of the constant temperature fan cover top plate (9) and the constant temperature fan cover bottom plate (11) is greater than that of the inner wall of the containing hole (12), and the constant temperature fan cover top plate (9) and the constant temperature fan cover bottom plate (11) are provided with sealing rings at opposite ends, so that the constant temperature fan cover top plate (9) and the constant temperature fan cover bottom plate (11) are respectively attached to the corresponding containing hole (12) of the constant temperature box (8) at one end, thereby achieving the sealing effect, and the bottom of the constant temperature box (8) is provided with a discharge hole corresponding to the inside of the discharge cavity (16), so that the excess hot air is discharged.

6. The LED lamp strip reflow soldering with heating protection function according to claim 5, characterized in that: The bottom of the constant temperature box (8) is fixedly embedded with an installation barrel (17) in communication with the inside of the discharge cavity (16), the inner wall of the installation barrel (17) is fixedly connected with a second air cylinder (15), and the output shaft of the second air cylinder (15) is fixedly connected to the bottom of the constant temperature fan cover bottom plate (11).

7. The LED lamp strip reflow soldering with heating protection function according to claim 6, characterized in that: The inner wall of the discharge cavity (16) is fixedly connected with a plurality of guide columns (13), the middle part of the constant temperature fan cover bottom plate (11) is provided with a guide hole (14) corresponding to the position of the guide column (13), and the guide column (13) is movably connected to the inner wall of the guide hole (14).

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