A welding tool for LED lamp production

Abstract

The present invention relates to the technical field of LED lamp bead welding, specifically a welding tool for the production of LED lamps, including a bracket, a multi-head solder paste dispenser, a synchronous conveyor belt, a feeding component, a reciprocating rotating component, an adsorption component, a miniature vacuum pump, a pillar and a hot air gun component, wherein two of the feeding components are symmetrically mounted on the bracket with respect to the synchronous conveyor belt, and the reciprocating rotating component is mounted between the bottoms of the two feeding components. The present invention solves the problem of low efficiency of LED lamp bead welding caused by performing LED lamp bead brazing operations at a relatively low temperature, and a significant shortening of the life of the hot air gun due to frequent switching on and off.

Description

Technical Field

[0001] The invention relates to the technical field of LED lamp bead welding, in particular to a welding tool used for producing LED lamps. Background Art

[0002] LED lamps refer to lighting equipment that uses light-emitting diodes (LEDs) as light sources. Compared with traditional lighting technologies, LED lamps have higher energy efficiency, longer service life and better environmental performance. In addition, LED lamps are small in size and easy to integrate into various equipment and designs. They are suitable for a variety of lighting occasions such as home, commercial, industrial, street, and landscape. In many fields such as photography, video production, and live broadcasting, LED fill light boards are often used to provide a stable light source, making the photos or videos taken clearer, brighter, and more colorful, which improves the professionalism of the shooting effect. A single LED fill light board is arrayed with a large number of LED lamp beads, which need to be fixed on the aluminum substrate by welding.

[0003] When welding a large number of LED lamp beads on an aluminum substrate, in order to improve the welding efficiency of the LED fill light board, brazing is usually used for welding, that is, solder is pre-applied close to the welding point of the aluminum substrate, and the aluminum substrate is moved by a conveyor belt to the fixed placement position of the LED lamp beads. After the LED lamp beads fall in the correct positive and negative directions, they are attached to the aluminum substrate. Then the conveyor belt continues to move the aluminum substrate to the bottom of the hot air gun, and the hot air gun heats and melts the solder, thereby completing the welding operation of the LED lamp beads.

[0004] In the prior art, after the LED lamp bead moves to the position directly below the air outlet of the hot air gun, it needs to stay there for a while to ensure that the solder is fully heated and melted. To improve welding efficiency, the heating temperature of the hot air gun needs to be kept far higher than the melting point of the solder. However, too high a heating temperature can easily damage the lamp bead. If the heating temperature is controlled to be close to the melting point of the solder to avoid damage to the LED lamp bead, the solder will take a slightly longer time to melt, resulting in low welding efficiency of the LED lamp bead. In addition, in order to save energy, the power supply of the hot air gun needs to be disconnected and then connected when the next row of LED lamp beads to be welded moves to the bottom of the hot air gun. Frequent opening and closing of the hot air gun greatly shortens the service life of the hot air gun.

[0005] Therefore, a welding tool for producing LED lamps is proposed. Summary of the invention

[0006] The purpose of the present invention is to provide a welding tool for the production of LED lamps. During the process of placing LED lamp beads onto the soldering points on the surface of an aluminum substrate, the hot air gun assembly is rotated to an inclined state to preheat the placed LED lamp beads and the solder. During the subsequent feeding process of the adsorption assembly, the hot air gun assembly rotates synchronously with the aluminum substrate on a synchronous conveyor belt to continuously heat the LED lamp beads and the solder. When the heating temperature is close to the melting point of the solder, the welding efficiency of the LED lamp beads can be fully guaranteed, and damage to the LED lamp beads after high-temperature welding can be avoided. The service life of the LED lamp beads can be extended without frequently disconnecting and connecting the power supply of the hot air gun. The problems of low welding efficiency of the LED lamp beads when the heating temperature is close to the melting point of the solder and a significant shortening of the service life of the hot air gun due to frequent switching on and off are solved.

[0007] Since there may be dozens or even hundreds of LED lamp beads in a single LED fill light board, in order to ensure that the heat generated by the LED lamp beads when powered on can be quickly dissipated, sheet-shaped LED lamp beads are preferably used. Therefore, the present invention is designed for the welding operation of LED fill light boards using sheet-shaped LED lamp beads.

[0008] To achieve the above object, the present invention provides the following technical solutions:

[0009] A welding tool for producing LED lamps, comprising a bracket, a multi-head solder paste dispenser, a synchronous conveyor belt, a feeding assembly, a reciprocating rotating assembly, an adsorption assembly, a micro vacuum pump, a support and a hot air gun assembly, wherein two feeding assemblies are symmetrically mounted on the bracket with respect to the synchronous conveyor belt, the reciprocating rotating assembly is mounted between the bottoms of the two feeding assemblies, and the reciprocating rotating assembly is electrically connected to the synchronous conveyor belt, the adsorption assembly is mounted on the reciprocating rotating assembly, the micro vacuum pump is mounted on the bottom of one side of the feeding assembly, a pressure relief valve is mounted on the micro vacuum pump, and the two The pillar is installed on the top of the bracket, the hot air gun assembly is rotatably installed between the two pillars, and the hot air gun assembly is transmission-connected to the reciprocating rotating assembly. When the adsorption assembly is located above the reciprocating rotating assembly and both the hot air gun assembly and the hot air gun assembly are in a vertical state, the loading assembly puts the LED lamp beads onto the surface of the adsorption assembly, and at the same time the hot air gun assembly heats the preheated solder directly below. When the adsorption assembly is located below the reciprocating rotating assembly and is in a vertical state, the hot air gun assembly is deflected toward the adsorption assembly side by the synchronous action of the reciprocating rotating assembly, and maintains an inclined state to preheat the solder directly below the adsorption assembly.

[0010] Preferably, the loading assembly includes a support, a limit frame, a lamp carrier bar, a lamp placement groove, an extension bar, a high-speed motor, a driving tooth and a transmission tooth. The support is installed on the surface of the bracket, the limit frame is attached to the surface of the support, the lamp carrier bar is slidably arranged on the inner side of the limit frame, and a tooth groove is provided on one side of the lamp carrier bar, the lamp placement grooves are arranged at equal intervals on the surface of the lamp carrier bar, the extension bar is installed at the end of the support, and the extension bar is slidably attached to the bottom of the lamp carrier bar, the high-speed motor is installed on the side wall of the limit frame close to one end of the extension bar, the driving tooth sleeve is arranged on the output shaft of the high-speed motor, the transmission tooth is rotatably connected to the limit frame, and the transmission tooth is meshed between the driving tooth and the tooth groove.

[0011] Preferably, the reciprocating rotating assembly includes a vertical rod, a reciprocating motor and a rotating shaft, the two vertical rods are respectively installed at the bottom of two supports, the reciprocating motor is installed on the side wall of the vertical rod away from the micro vacuum pump, the rotating shaft is rotatably installed between the two vertical rods, and an air chamber connected to the micro vacuum pump is constructed inside the rotating shaft, and the end of the rotating shaft away from the air chamber is connected to the output shaft of the reciprocating motor.

[0012] Preferably, the adsorption assembly includes a temporary placement plate, a rectangular groove, a silicone sheet and an airway, the temporary placement plate is fitted on the outer periphery of the rotating shaft, the rectangular grooves are evenly spaced on the side of the temporary placement plate away from the rotating shaft, the airways are evenly spaced inside the temporary placement plate, and the airways are connected between the air chamber and the rectangular grooves, and the silicone sheet is fit-fitted at the junction of the rectangular groove and the airway.

[0013] Preferably, the hot air gun assembly includes a pulley, a rotating bar, an air inlet, a heating tube, an electric heating wire, a micro fan and a belt, pulleys are installed at both ends of the rotating bar, the pulleys are rotatably connected to the pillars, the air inlet holes are evenly spaced on the side wall of the rotating bar, the heating tubes are evenly spaced at the bottom of the rotating bar, and the top of the heating tubes is connected to the air inlet, the electric heating wire is installed in the heating tube, the micro fan is installed at the end of the air inlet, and the belt is connected between the pulley and the rotating shaft.

[0014] Preferably, a notch is connected in the lamp placement groove, the length of the lamp placement groove is greater than the length of the rectangular groove, and a sloped protrusion located in the lamp placement groove is integrally formed at the bottom of the lamp carrier strip, and the bottom of the notch is flush with the top of the sloped protrusion.

[0015] Preferably, the micro fan is installed on the side of the rotating bar away from the temporary placement plate.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. In the present invention, when the aluminum substrate is moved to the bottom of the LED lamp bead placement position after the soldering is finished, the feeding component has already placed the LED lamp bead on the adsorption component. At this time, the reciprocating rotating component drives the adsorption component to rotate 180° counterclockwise to the bottom of the rotating shaft. In this process, the hot air gun component is synchronously deflected to the side of the LED lamp bead placed at the bottom of the adsorption component under the action of the reciprocating rotating component, thereby preheating the LED lamp bead and the solder. Subsequently, the aluminum substrate gradually moves to the bottom of the rotating bar under the action of the synchronous conveyor belt, and the reciprocating rotating component drives the temporary placement plate to rotate clockwise and reset. At the same time, the hot air outlet of the hot air gun component is always aimed at the LED lamp bead and the solder. In the process of the feeding component placing the LED lamp bead on the adsorption component, the hot air gun component continuously heats and melts the solder at a heating temperature slightly higher than the melting temperature of the solder, which can fully ensure the welding efficiency of the LED lamp bead and prevent the LED lamp bead from being damaged due to high-temperature welding. At the same time, there is no need to frequently turn on and off the power supply of the hot air gun component. On the premise of saving energy, the service life of the welding tooling is fully extended.

[0018] 2. Through the designed reciprocating rotating component and hot air gun component, when the hot air gun component rotates to an inclined state to preheat the LED lamp beads falling on the surface of the aluminum substrate, the micro fan rotates with the rotating bar and the distance between it and the surface of the aluminum substrate is reduced. At this time, the air on the side of the LED lamp beads that have been welded is drawn into the heating tube, thereby accelerating the cooling of the welded LED lamp beads by accelerating the air circulation, further improving the welding efficiency of the LED fill light board.

[0019] 3. Through the designed reciprocating rotating component, adsorption component, micro vacuum pump and pressure relief valve, the micro vacuum pump extracts and discharges the air in the airway through the air chamber in the rotating shaft, so that the air chamber and the airway are in a negative pressure state, and the silicone sheet deforms toward the inside of the airway, and then the silicone sheet and the LED lamp beads in the rectangular groove form a negative pressure space. In the process of the reciprocating rotating component driving the adsorption component to rotate counterclockwise, the LED lamp beads are effectively prevented from falling, thereby ensuring the accuracy of the LED lamp bead placement position and effectively improving the welding quality of the LED lamp beads. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 It is a structural schematic diagram of the feeding assembly of the present invention;

[0022] Figure 3 It is a schematic diagram of the structure of the limit frame of the present invention;

[0023] Figure 4 It is a schematic diagram of the structure of the light sheet carrier strip of the present invention;

[0024] Figure 5It is a structural schematic diagram of the reciprocating rotating assembly of the present invention;

[0025] Figure 6 It is a structural schematic diagram of the hot air gun assembly of the present invention;

[0026] Figure 7 It is a side view of the adsorption assembly of the present invention in a loading state;

[0027] Figure 8 It is a side view of the adsorption assembly of the present invention in a rotating state;

[0028] Fig. 9 It is a side view of the adsorption component of the present invention in the unloading state.

[0029] In the figure: 1. bracket; 2. multi-head solder paste dispensing machine; 3. synchronous conveyor belt; 4. feeding assembly; 41. support; 42. limit frame; 43. lamp carrier strip; 431. tooth groove; 44. lamp placement slot; 441. notch; 45. extension strip; 46. high-speed motor; 47. driving gear; 48. transmission gear; 5. reciprocating rotating assembly; 51. vertical rod; 52. reciprocating motor; 53. rotating shaft; 531. air chamber; 6. adsorption assembly; 61. temporary placement plate; 62. rectangular groove; 63. silicone sheet; 64. airway; 7. micro vacuum pump; 71. pressure relief valve; 8. pillar; 9. hot air gun assembly; 91. pulley; 92. rotating strip; 93. air inlet; 94. heating tube; 95. heating wire; 96. micro fan; 97. belt. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] See also Figures 1 to 9 The present invention provides a welding tool for producing LED lamps, and the technical solution is as follows:

[0032] A welding tool for producing LED lamps, comprising a bracket 1, a multi-head solder paste dispenser 2, and a synchronous conveyor belt 3. The bracket 1 is horizontally arranged during welding operation. The multi-head solder paste dispenser 2 is installed at the rear end position of the surface of the bracket 1 and is used to dispense solder paste as solder on an aluminum substrate. The number of heads of the multi-head solder paste dispenser 2 is the same as the number of welding of a single-row LED lamp bead. A through groove is opened at the center of the bracket 1. The synchronous conveyor belt 3 is installed in the through groove, and both ends of the synchronous conveyor belt 3 are close to the ends of the bracket 1. The tool also comprises a feeding component 4, a reciprocating rotating component 5, an adsorption component 6, and a micro vacuum pump. 7, support 8 and hot air gun assembly 9, two feeding assemblies 4 are symmetrically installed on the bracket 1 about the synchronous conveyor belt 3, and the lengths of the two feeding assemblies 4 vary according to the number of LED lamp beads. If the number of LED lamp beads in a single row is an even number, the lengths of the two feeding assemblies 4 are the same. If the number of LED lamp beads in a single row is an even number, the lengths of the two feeding assemblies 4 are different; the reciprocating rotating assembly 5 is installed between the bottoms of the two feeding assemblies 4, and the reciprocating rotating assembly 5 is electrically connected to the synchronous conveyor belt 3. The reciprocating rotating assembly 5 and the synchronous conveyor belt 3 are connected through a controller. Regardless of whether the reciprocating rotating assembly 5 rotates clockwise, the reciprocating rotating assembly 5 rotates clockwise. Whether it rotates clockwise or counterclockwise, the synchronous conveyor belt 3 drives the aluminum substrate to move from back to front. The adsorption component 6 is installed on the reciprocating rotating component 5, and the micro vacuum pump 7 is installed at the bottom of the feeding component 4 on one side. A pressure relief valve 71 is installed on the micro vacuum pump 7. When the feeding component 4 puts the LED lamp beads into the adsorption component 6 which is vertical and located above the reciprocating rotating component 5, the power supply of the micro vacuum pump 7 is in the on state, and the pressure relief valve 71 is in the closed state. At this time, the LED lamp beads can be fixed in the adsorption component 6. After the adsorption component 6 rotates 180° to the bottom of the reciprocating rotating component 5, the micro vacuum pump 7 is in the In the power-off state, and the pressure relief valve 71 is in the open state, at this time, the LED lamp beads lose their restrictions and fall on the welding point position of the aluminum substrate; two pillars 8 are installed on the top of the bracket 1, and the hot air gun assembly 9 is rotatably installed between the two pillars 8, and the hot air gun assembly 9 is connected to the reciprocating rotating assembly 5 in a transmission manner. When the reciprocating rotating assembly 5 drives the adsorption assembly 6 to rotate 180°, the hot air gun assembly 9 rotates simultaneously with the reciprocating rotating assembly 5, and the rotation angle of the hot air gun assembly 9 is different from the rotation angle of the adsorption assembly 6; when the adsorption assembly 6 is located above the reciprocating rotating assembly 5 and is in a vertical state with the hot air gun assembly 9, refer to Figure 5 and Figure 7 , the feeding component 4 puts the LED lamp beads onto the surface of the adsorption component 6, and at the same time the hot air gun component 9 heats the preheated solder directly below; when the adsorption component 6 is located below the reciprocating rotating component 5 and is in a vertical state, the hot air gun component 9 is deflected to the side of the adsorption component 6 by the synchronous action of the reciprocating rotating component 5, and maintains an inclined state to preheat the solder directly below the adsorption component 6, corresponding to Fig. 9 Status shown in .

[0033] As an embodiment of the present invention, refer to Figure 2 , Figure 3 , Figure 4 The feeding assembly 4 includes a support 41, a limit frame 42, a lamp carrier strip 43, a lamp placement groove 44, an extension strip 45, a high-speed motor 46, a driving tooth 47 and a transmission tooth 48. The support 41 is installed on the surface of the bracket 1. The cross section of the support 41 is L-shaped. The limit frame 42 is attached to the surface of the support 41. The lamp carrier strip 43 is slidably arranged on the inner side of the limit frame 42, and a tooth groove 431 is opened on one side of the lamp carrier strip 43. The lamp placement grooves 44 are evenly spaced and opened on the surface of the lamp carrier strip 43. The extension strip 45 is installed at the end of the support 41, and the extension strip 45 is slidably attached to the bottom of the lamp carrier strip 43. The extension strip 45 is used to prevent the LED lamp beads just placed in the lamp placement groove 44 from falling off. The high-speed motor 46 is installed on the side wall of the limit frame 42 near one end of the extension strip 45. The driving tooth 47 is sleeved on the output shaft of the high-speed motor 46. The transmission tooth 48 is rotatably connected with the limit frame 42, and the transmission tooth 48 is meshed between the driving tooth 47 and between the tooth grooves 431; after the LED lamp beads of the high-speed motor 46 are placed in the lamp sheet placement groove 44, the LED lamp beads fall down, and at the moment of starting the high-speed motor 46, the output shaft of the high-speed motor 46 drives the lamp sheet carrier strip 43 to move horizontally along the inner wall of the limit frame 42 through the transmission action between the driving teeth 47, the transmission teeth 48 and the tooth grooves 431, and the end of the LED lamp bead enters the notch 441 under the action of inertia, thereby preventing the LED lamp bead from falling from the bottom of the lamp sheet placement groove 44, when the ends of the lamp sheet carrier strips 43 in the two feeding components 4 collide, the power supply of the high-speed motor 46 is disconnected, and the lamp sheet carrier strip 43 quickly stops after the collision, and the LED lamp bead moves out of the notch 441 under the action of inertia, and then the LED lamp bead falls from the bottom of the lamp sheet placement groove 44 into the rectangular groove 62 of the temporary placement plate 61, and then the high-speed motor 46 reverses and quickly resets to prevent the lamp sheet carrier strip 43 from being exposed and affecting the rotation of the temporary placement plate 61.

[0034] As an embodiment of the present invention, refer to Figure 5 The reciprocating rotating assembly 5 includes a vertical rod 51, a reciprocating motor 52 and a rotating shaft 53. The two vertical rods 51 are respectively installed at the bottom of the two supports 41, the reciprocating motor 52 is installed on the side wall of the vertical rod 51 away from the micro vacuum pump 7, the rotating shaft 53 is rotatably installed between the two vertical rods 51, and the rotating shaft 53 is internally constructed with an air chamber 531 connected to the micro vacuum pump 7. The micro vacuum pump 7 extracts air in the adsorption assembly 6 through the air chamber 531 to make the adsorption assembly 6 in a negative pressure state. The end of the rotating shaft 53 away from the air chamber 531 is connected to the output shaft of the reciprocating motor 52. The reciprocating motor 52 drives the rotating shaft 53 to rotate by 180°. After rotating clockwise, the next rotation becomes counterclockwise, and the rotation angle is also 180°, so that the hot air gun assembly 9 can be reset after rotation to continuously heat the LED lamp beads and solder paste moved to the bottom of the hot air gun assembly 9.

[0035] As an embodiment of the present invention, refer to Figure 5 The adsorption component 6 includes a temporary placement plate 61, a rectangular groove 62, a silicone sheet 63 and an air channel 64. The temporary placement plate 61 is fitted and installed on the outer periphery of the rotating shaft 53. The rectangular grooves 62 are evenly spaced and arranged on the side of the temporary placement plate 61 away from the rotating shaft 53. The air channels 64 are evenly spaced and arranged inside the temporary placement plate 61. The air channels 64 are connected between the air chamber 531 and the rectangular grooves 62. The silicone sheet 63 is fitted and installed at the junction of the rectangular grooves 62 and the air channels 64. When the micro vacuum pump 7 is in the power-on state and the pressure relief valve 71 is in the closed state, the air chamber 531 and the air channel 64 are both in a negative pressure state. At this time, The stretched silicone sheet 63 that is attached to the LED lamp bead is deformed into the airway 64 due to the negative pressure, and a negative pressure space is formed between the LED lamp bead and the silicone sheet 63, thereby limiting and fixing the LED lamp bead in the rectangular groove 62. When the LED lamp bead rotates to the bottom of the rotating shaft 53, the power supply of the micro vacuum pump 7 is disconnected, and the pressure relief valve 71 is in an open state. At this time, the outside air enters the air chamber 531 and the airway 64 through the pressure relief valve 71, and the silicone sheet 63 is reset under the action of its own material properties, and the LED lamp bead is pushed out of the rectangular groove 62 by elasticity, so that the LED lamp bead falls on the welding part of the aluminum substrate.

[0036] As an embodiment of the present invention, refer to Figure 6The hot air gun assembly 9 includes a pulley 91, a rotating bar 92, an air inlet 93, a heating tube 94, an electric heating wire 95, a micro fan 96 and a belt 97. The pulleys 91 are installed at both ends of the rotating bar 92. The pulleys 91 at both ends of the rotating bar 92 are rotatably connected to the support 8, and the pulleys 91 are also installed on the periphery of the rotating shaft 53. The pulleys 91 on the periphery of the rotating shaft 53 are different from the pulleys 91 at both ends of the rotating bar 92. Since the rotation angle of the heating tube 94 does not reach 180°, the diameter of the pulleys 91 on the periphery of the rotating shaft 53 is different from that of the pulleys 91 at both ends of the rotating bar 92. The pulley 91 has a relatively small diameter, air inlet holes 93 are evenly spaced on the side wall of the rotating bar 92, heating tubes 94 are evenly spaced and installed at the bottom of the rotating bar 92, and the top of the heating tubes 94 is connected to the air inlet holes 93, the heating wire 95 is installed in the heating tubes 94, the micro fan 96 is installed at the end of the air inlet holes 93, the belt 97 is connected between the pulley 91 and the rotating shaft 53, and the micro fan 96 is installed on the side of the rotating bar 92 away from the temporary placement plate 61; when the output shaft of the reciprocating motor 52 drives the rotating shaft 53 to rotate, The pulley 91 on the rotating shaft 53 and the pulleys 91 at both ends of the rotating bar 92 are rotated synchronously through the belt 97, thereby changing the angle of the rotating bar 92, and at the same time changing the angle of the air outlet of the micro-blower 96 and the heating tube 94. When the heating tube 94 is tilted toward the bottom of the temporary placement plate 61, the welded LED lamp beads move to the front side below the temporary placement plate 61, and the micro-blower 96 draws air in the area of ​​the welded LED lamp beads, and blows it toward the LED lamp beads after being heated by the electric heating wire 95. The rotation speed of the micro-blower 96 is fixed, and the wind force formed is fixed. The hot air blown out when the heating tube 94 is tilted forms an air heating layer above the LED lamp beads on the pre-heating side to avoid direct blowing of the LED lamp beads. When the pre-heated LED lamp beads subsequently move to the bottom of the rotating bar 92, although the distance between the LED lamp beads and the air outlet of the heating tube 94 is reduced, the solder paste has melted between the aluminum substrate and the LED lamp beads. The melted solder paste can stabilize the LED lamp beads, thereby preventing the LED lamp beads from being blown by the hot air.

[0037] As an embodiment of the present invention, refer to Figure 4 , a notch 441 is connected in the lamp sheet placement groove 44, and the length of the lamp sheet placement groove 44 is greater than the length of the rectangular groove 62. A sloped protrusion located in the lamp sheet placement groove 44 is integrally formed at the bottom of the lamp sheet carrier strip 43. The length difference between the lamp sheet placement groove 44 and the rectangular groove 62 is the length of the horizontal part of the sloped protrusion. The bottom of the notch 441 is flush with the top of the sloped protrusion. When the end of the lamp sheet carrier strip 43 collides and quickly stops, the LED lamp bead moves out of the notch 441, and the end portion falls in contact with the edge of the sloped protrusion under the guidance of the sloped protrusion, and then the LED lamp bead falls smoothly into the rectangular groove 62.

[0038] Working process: In the initial state, the support 41 is placed under the LED lamp bead unloading equipment, and the temporary placement plate 61 is located above the rotating shaft 53 and remains vertical. The LED lamp bead unloading equipment puts the sheet-shaped LED lamp beads into the lamp sheet placement groove 44 of the lamp sheet carrier strip 43 in the correct positive and negative directions. At this time, the bottom of the LED lamp bead overlaps the sloped protrusion, and the bottom surface of the end of the LED lamp bead is flush with the notch 441. At the moment of starting the high-speed motor 46, the output shaft of the high-speed motor 46 drives the lamp sheet carrier strip 43 to move horizontally along the inner wall of the limit frame 42 through the transmission action between the driving teeth 47, the transmission teeth 48 and the tooth grooves 431. Under the action of inertia, the end of the LED lamp bead enters the notch 441 along the sloped protrusion. When the ends of the two light sheet carrier strips 43 collide and quickly come to a stop, the LED lamp bead quickly moves out of the notch 441 under the action of inertia, and the LED lamp bead fits the sloped protrusion and moves in the opposite direction. The LED lamp bead keeps one end fitting the edge of the sloped protrusion and the other end fitting the light sheet placement groove 44 and falls into the rectangular groove 62. Then the high-speed motor 46 reverses and drives the light sheet carrier strip 43 to reset. At this time, the micro vacuum pump 7 is powered on, the pressure relief valve 71 is closed, the air chamber 531 and the airway 64 are both in a negative pressure state, and the stretched silicone sheet 63 is deformed into the airway 64 under the action of negative pressure, a negative pressure space is formed between the LED lamp bead and the silicone sheet 63, and the LED lamp bead is fixedly fitted in the rectangular groove 62.

[0039] After the LED lamp bead falls into the rectangular groove 62, the reciprocating motor 52 first drives the rotating shaft 53 to rotate 180 degrees counterclockwise, and the LED lamp bead moves to the bottom of the rotating shaft 53 with the temporary placement plate 61. The synchronous conveyor belt 3 moves the part of the aluminum substrate where the solder paste is applied to the bottom of the rotating shaft 53. The power of the micro vacuum pump 7 is disconnected, and the pressure relief valve 71 is opened. The outside air enters the air chamber 531 and the airway 64 through the pressure relief valve 71. The silicone sheet 63 is reset under the action of its own material properties and pushes the LED lamp bead out of the rectangular groove 62. The LED lamp bead falls on the welding part of the aluminum substrate. In this process, refer to Figure 8 and Fig. 9 The rotating shaft 53 drives the rotating bar 92 to rotate a corresponding angle through the pulley 91 and the belt 97, so that the air outlet at the bottom of the heating tube 94 deflects toward the temporary placement plate 61, preheating the fallen LED lamp beads and solder paste, gradually increasing the temperature of the solder paste, so that the solder paste slowly melts. In addition, the micro fan 96 extracts air from the area where the LED lamp beads have been soldered, speeding up the air circulation and quickly cooling the LED lamp beads soldered on the aluminum substrate;

[0040] After a single row of LED lamp beads fall on the aluminum substrate for preheating, the reciprocating motor 52 drives the rotating shaft 53 to rotate 180° clockwise. At this time, the synchronous conveyor belt 3 drives the aluminum substrate to continue to move to the bottom of the rotating bar 92, and the temporary placement plate 61 rotates clockwise to the upper side of the rotating shaft 53 and maintains a vertical state. In the process of rotating the rotating bar 92 rotating to the vertical state, the air outlet at the bottom of the heating tube 94 is always facing the solder paste near the LED lamp beads. Figure 7 and Figure 8 , and when the temporary placement plate 61 and the rotating bar 92 stop rotating, the air heated by the electric heating wire 95 is blown out from the end of the heating tube 94, and the solder paste is continuously heated and melted, thereby completing the welding of the LED lamp beads;

[0041] The above operations are performed continuously, thereby realizing efficient production of LED fill light panels, and brazing and welding can be performed at a lower temperature to prevent the LED lamp beads from being damaged by high temperature, and there is no need to frequently turn on and off the power supply of the hot air gun assembly 9, fully ensuring the service life of the equipment.

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

Claims

1. A welding tool for producing LED lamps, comprising a bracket (1), a multi-head solder paste dispensing machine (2), and a synchronous conveyor belt (3), characterized in that: It also includes a feeding component (4), a reciprocating rotating component (5), an adsorption component (6), a micro vacuum pump (7), a support (8) and a hot air gun component (9), wherein the two feeding components (4) are symmetrically mounted on the bracket (1) with respect to the synchronous conveyor belt (3), the reciprocating rotating component (5) is mounted between the bottoms of the two feeding components (4), and the reciprocating rotating component (5) is electrically connected to the synchronous conveyor belt (3), the adsorption component (6) is mounted on the reciprocating rotating component (5), the micro vacuum pump (7) is mounted on the bottom of one side of the feeding component (4), a pressure relief valve (71) is mounted on the micro vacuum pump (7), and the two support pillars (8) are mounted on the top of the bracket (1). The hot air gun assembly (9) is rotatably mounted between the two pillars (8), and the hot air gun assembly (9) is transmission-connected to the reciprocating rotating assembly (5). When the adsorption assembly (6) is located above the reciprocating rotating assembly (5) and both the hot air gun assembly (9) and the adsorption assembly (6) are in a vertical state, the loading assembly (4) puts the LED lamp beads onto the surface of the adsorption assembly (6), and at the same time, the hot air gun assembly (9) heats the preheated solder directly below. When the adsorption assembly (6) is located below the reciprocating rotating assembly (5) and is in a vertical state, the hot air gun assembly (9) is deflected toward the adsorption assembly (6) by the synchronous action of the reciprocating rotating assembly (5), and maintains an inclined state to preheat the solder directly below the adsorption assembly (6).

2. The welding tool for LED lamp production according to claim 1, characterized in that: The loading assembly (4) comprises a support (41), a limit frame (42), a light sheet carrier strip (43), a light sheet placement groove (44), an extension strip (45), a high-speed motor (46), a driving tooth (47) and a transmission tooth (48), wherein the support (41) is mounted on the surface of the bracket (1), the limit frame (42) is attached to the surface of the support (41), the light sheet carrier strip (43) is slidably arranged on the inner side of the limit frame (42), and a tooth groove (431) is provided on one side of the light sheet carrier strip (43), and the light sheet placement groove (44) is provided with a tooth groove (431). 4) are opened at equal intervals on the surface of the light sheet carrier strip (43), the extension strip (45) is installed at the end of the support (41), and the extension strip (45) is slidably fitted with the bottom of the light sheet carrier strip (43), the high-speed motor (46) is installed on the side wall of the limit frame (42) close to one end of the extension strip (45), the driving gear (47) is sleeved on the output shaft of the high-speed motor (46), the transmission gear (48) is rotatably connected to the limit frame (42), and the transmission gear (48) is meshed between the driving gear (47) and the tooth groove (431).

3. The welding tool for LED lamp production according to claim 2, characterized in that: The reciprocating rotating assembly (5) comprises a vertical rod (51), a reciprocating motor (52) and a rotating shaft (53); the two vertical rods (51) are respectively mounted on the bottom of two supports (41); the reciprocating motor (52) is mounted on the side wall of the vertical rod (51) away from the micro vacuum pump (7); the rotating shaft (53) is rotatably mounted between the two vertical rods (51); an air chamber (531) in communication with the micro vacuum pump (7) is configured inside the rotating shaft (53); and the end of the rotating shaft (53) away from the air chamber (531) is connected to the output shaft of the reciprocating motor (52).

4. The welding tool for LED lamp production according to claim 3, characterized in that: The adsorption component (6) comprises a temporary placement plate (61), a rectangular groove (62), a silicone sheet (63) and an air channel (64); the temporary placement plate (61) is fitted on the outer periphery of the rotating shaft (53); the rectangular grooves (62) are arranged at equal intervals on a side of the temporary placement plate (61) away from the rotating shaft (53); the air channels (64) are arranged at equal intervals inside the temporary placement plate (61); the air channels (64) are connected between the air chamber (531) and the rectangular grooves (62); and the silicone sheet (63) is fitted on the junction of the rectangular groove (62) and the air channel (64).

5. The welding tool for LED lamp production according to claim 4, characterized in that: The hot air gun assembly (9) comprises a pulley (91), a rotating bar (92), an air inlet (93), a heating tube (94), an electric heating wire (95), a micro fan (96) and a belt (97). The pulleys (91) are installed at both ends of the rotating bar (92), and the pulleys (91) are rotatably connected to the support (8). The air inlet (93) are evenly spaced on the side wall of the rotating bar (92). The heating tubes (94) are evenly spaced at the bottom of the rotating bar (92), and the top of the heating tubes (94) is connected to the air inlet (93). The electric heating wire (95) is installed in the heating tube (94), and the micro fan (96) is installed at the end of the air inlet (93). The belt (97) is connected between the pulley (91) and the rotating shaft (53).

6. The welding tool for LED lamp production according to claim 5, characterized in that: The lamp piece placement groove (44) is connected to a notch (441), the length of the lamp piece placement groove (44) is greater than the length of the rectangular groove (62), the bottom of the lamp piece carrier strip (43) is integrally formed with a sloped protrusion located in the lamp piece placement groove (44), and the bottom of the notch (441) is flush with the top of the sloped protrusion.

7. The welding tool for LED lamp production according to claim 6, characterized in that: The micro fan (96) is installed on a side of the rotating bar (92) away from the temporary placement plate (61).

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