LED lighting lamp chip pin positioning and welding device

Abstract

The invention relates to the technical field of LED chip welding, and discloses an LED lighting lamp chip pin positioning and welding device which comprises a base with an n-shaped cover plate installed at the upper end, a material supporting mechanism is arranged on the base, and a material taking mechanism is arranged above the base. The positioning and welding device for the LED lighting lamp chip pins can effectively solve the problems that in the prior art, LED lamp bead pins are prone to warping and deformation, and the production efficiency is high. The problems that the LED lamp bead welding efficiency is affected due to the fact that quality defects such as welding deviation and insufficient welding occur in the prior art, the distance requirements of different tin soldering work cannot be met, and suction nozzle components need to be frequently replaced and debugged are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of LED chip soldering, and particularly relates to a device for positioning and soldering the pins of an LED lighting fixture chip. Background Art

[0002] An LED lamp is a light-emitting semiconductor material chip, which usually needs to be packaged into an LED lamp bead before use. In the production process of LED lighting fixtures, it is necessary to first solder the prepared LED lamp beads onto a PCB board and then package them into the LED lighting fixture for use. During the production process of soldering surface-mounted LED lamp beads onto a PCB board, it is usually necessary to cooperate with a pick-and-place machine for soldering work, and the soldering quality of its chip pins directly affects the electrical conductivity, heat dissipation efficiency, and service life of the lighting fixture.

[0003] However, in the current pick-and-place machines on the market, when positioning an LED lamp bead by vacuum adsorption, problems such as warping and deformation of the LED lamp bead pins often occur due to uneven nozzle pressure or the fragile structure of the LED lamp bead pins, which in turn lead to quality defects such as welding deviation and false soldering. In addition, most of the existing pick-and-place machines use fixed-spacing nozzles. When used for soldering LED lamp beads with different spacings, they cannot adapt to the spacing requirements of different soldering operations. In multi-specification mixed-line production, it is necessary to frequently replace and debug the nozzle components, indirectly affecting the soldering work efficiency. Summary of the Invention

[0004] In view of the above-mentioned drawbacks of the prior art, the present invention provides a device for positioning and soldering the pins of an LED lighting fixture chip, which can effectively solve the problems in the prior art, such as easy warping and deformation of the LED lamp bead pins, quality defects such as welding deviation and false soldering, and the inability to adapt to the spacing requirements of different soldering operations, affecting the soldering efficiency of LED lamp beads.

[0005] To achieve the above objectives, the present invention is realized through the following technical solutions:

[0006] The present invention provides a device for positioning and soldering the pins of an LED lighting fixture chip, including:

[0007] A base with a C-shaped cover plate installed at the upper end, a material supporting mechanism is arranged on the base, a material taking mechanism is arranged above the base, a displacement mechanism is jointly arranged on the base and the C-shaped cover plate, an equidistant adjustment mechanism is arranged on the material taking mechanism, a pin correction mechanism is arranged on the material taking mechanism, and an automatic soldering mechanism is also arranged on the material taking mechanism;

[0008] Among them, the material taking mechanism includes a first mounting plate arranged above the base. A first U-shaped plate with a downward opening is mounted on the rear side of the upper end of the first mounting plate. A second U-shaped plate with a rearward opening is mounted on the upper side of the front end of the first U-shaped plate. Two left and right secondary pneumatic push rods are installed through the upper end of the second U-shaped plate. A rectangular through hole is formed at the position of the front end of the first U-shaped plate on the upper end of the first mounting plate. A plurality of annular sleeves are evenly arranged in the rectangular through hole from left to right. A material taking part is jointly arranged on the first mounting plate and the first U-shaped plate;

[0009] The pin correction mechanism includes a first rectangular sleeve plate fixedly sleeved in the middle of the outer wall of each annular sleeve. A second rectangular sleeve plate is slidably sleeved on the lower side of the outer wall of each annular sleeve. An auxiliary unlocking part is jointly arranged on each corresponding first rectangular sleeve plate, second rectangular sleeve plate and annular sleeve. A first correction part is arranged on each of the plurality of second rectangular sleeve plates. A second correction part is arranged on the first mounting plate.

[0010] Further, the first correction part includes first L-shaped pressing plates symmetrically mounted on the front and rear sides of the lower end of the second rectangular sleeve plate. A positioning groove is formed on the upper side of the vertical section of the first L-shaped pressing plate. An installation through hole is formed on the upper end of the horizontal section of the first L-shaped pressing plate. Two left and right support sliding rods are jointly mounted on the inner walls of the front and rear ends of the installation through hole. A second L-shaped pressing plate with a rounded corner is slidably sleeved on the two left and right support sliding rods. Compression springs are sleeved on the parts of the two left and right support sliding rods located between the second L-shaped pressing plate and the first L-shaped pressing plate. Two left and right avoidance grooves are formed at the bottom ends of the vertical sections of the first L-shaped pressing plates. The outer right-angle ends of the first L-shaped pressing plates are wedge-shaped structures. A correction assistance group is also jointly arranged on the two front and rear first L-shaped pressing plates.

[0011] Further, the second correction part includes a first rectangular plate movably attached to the lower end of the first mounting plate. Circular connecting rods are symmetrically mounted on the left and right sides of the upper end of the first rectangular plate. The upper ends of the two left and right circular connecting rods slide through the first mounting plate and are fixedly connected to the secondary telescopic ends of the corresponding secondary pneumatic push rods. Second rectangular plates are slidably mounted on the inner wall of the first rectangular plate corresponding to the positions of the plurality of annular sleeves. A correction group is symmetrically arranged on the front and rear sides of the lower end of the second rectangular plate. The correction group includes an L-shaped pushing plate mounted on the lower end of the second rectangular plate. The lower side of the end of the vertical section of the L-shaped pushing plate facing the annular sleeve is a wedge-shaped structure. A rectangular installation groove is formed at the end of the horizontal section of the L-shaped pushing plate facing the annular sleeve. A trapezoidal matching plate is slidably connected in the rectangular installation groove through a compression spring. A wedge-shaped positioning plug is mounted in the middle of the end of the trapezoidal matching plate facing the annular sleeve. The inclined surfaces of the trapezoidal matching plate and the wedge-shaped positioning plug are both downward.

[0012] Further, the auxiliary unlocking part includes fitting chutes symmetrically arranged on the left and right sides of the outer wall of the annular sleeve. Fitting sliders are symmetrically installed on the left and right sides of the inner circular wall of the rectangular sleeve plate II. The left and right two fitting sliders are respectively slidably connected in the corresponding fitting chutes. A plurality of guiding sliding rods evenly distributed in a rectangle are installed at the upper end of the rectangular sleeve plate II. Limiting baffles are installed at the upper ends of the plurality of guiding sliding rods, and at the same time, they slidably penetrate through the rectangular sleeve plate I. Compression springs are sleeved on the parts of the plurality of guiding sliding rods located between the rectangular sleeve plate I and the rectangular sleeve plate II. Trapezoidal ejector rods are installed at the bottom end of the annular sleeve corresponding to the positions of the plurality of avoidance grooves, and the inclined surface ends of the trapezoidal ejector rods are arranged upward.

[0013] Further, the equidistant adjustment mechanism includes support plates installed at both the left and right ends of the C-shaped plate I. The lower ends of the left and right two support plates are fixedly connected to the mounting plate I. A transmission shaft is rotatably penetrated through the left and right two support plates together. A servo motor is installed at the right end of the right support plate through a motor base. The output shaft of the servo motor is fixedly connected to the transmission shaft. A cylindrical cam is fixedly sleeved on the outer wall of the transmission shaft. An annular chute is opened in the middle of the outer wall of the cylindrical cam. A plurality of variable pitch spiral grooves are symmetrically opened on the left and right sides of the outer wall of the cylindrical cam. A waist-shaped through hole is opened at the front end of the C-shaped plate I corresponding to the position of the cylindrical cam. A plurality of circular sliding rods are slidably installed in the cylindrical cam. The rear ends of the plurality of circular sliding rods are rotatably installed with rollers. The plurality of rollers are respectively in rolling contact with the corresponding variable pitch spiral grooves and annular chutes. Waist-shaped limiting grooves are opened on the outer walls of the plurality of annular sleeves corresponding to the positions of the circular sliding rods. The front ends of the plurality of circular sliding rods are respectively slidably connected in the corresponding waist-shaped limiting grooves.

[0014] Further, the correction assistance group includes mounting chutes opened at the opposite ends of the front and rear two L-shaped pressing plates I. Rectangular sliders are slidably connected in the mounting chutes through compression springs. A trapezoidal alignment plate is installed at one end of the rectangular slider away from the corresponding L-shaped pressing plate I. The inclined surface end of the trapezoidal alignment plate is arranged towards the annular sleeve. A plurality of mounting plates II are evenly installed at the lower end of the L-shaped pressing plate I from left to right. The lower sides of the opposite ends of the left and right two mounting plates II are wedge-shaped structures, and the lower sides of the left and right ends of the remaining mounting plates II are wedge-shaped structures. And rectangular accommodating grooves are opened at the opposite ends of the left and right two mounting plates II, and rectangular accommodating grooves are provided at the left and right ends of the remaining mounting plates II. Blocks are slidably connected in the plurality of rectangular accommodating grooves through compression springs. The upper and lower ends of the blocks are wedge-shaped structures.

[0015] Furthermore, the material taking part includes a plurality of rectangular sleeve plates three slidably installed between the U-shaped plate one and the U-shaped plate two. A connecting pipe is installed through the middle of each of the plurality of rectangular sleeve plates three. The lower ends of the plurality of connecting pipes are all slidably connected to the inner wall of the annular sleeve. A suction nozzle buffer assembly is arranged at the lower end of each of the plurality of annular sleeves. A rectangular connecting plate is installed in the middle of the front end of the U-shaped plate one. Two rectangular sliding grooves one are opened at the corresponding positions of the front end of the U-shaped plate one with respect to the rectangular connecting plate. Limiting sliders are installed on both the left and right sides of the rear end of the rectangular connecting plate. The left and right two limiting sliders are respectively slidably connected in the corresponding rectangular sliding grooves one. A kidney-shaped sliding hole is opened at the upper end of the rectangular connecting plate. The outer walls of the plurality of annular sleeves are all slidably connected to the inner wall of the kidney-shaped sliding hole. Rectangular sliding grooves two are opened on the inner walls at both the front and rear ends of the kidney-shaped sliding hole. Limiting rods are symmetrically installed on the outer walls of the plurality of annular sleeves in the front and rear directions. The plurality of limiting rods are respectively slidably connected in the corresponding rectangular sliding grooves two. A cylinder is installed on the upper end of the U-shaped plate one through a mounting seat. The upper ends of the plurality of connecting pipes are all connected to the cylinder through spring air pipes and adapters. The first-stage telescopic ends of the left and right two secondary pneumatic push rods are fixedly connected to the upper end surface of the rectangular connecting plate, and the second-stage telescopic ends of the left and right two secondary pneumatic push rods all slidably penetrate through the lower end surface of the rectangular connecting plate.

[0016] Furthermore, the automatic soldering mechanism includes mounting sliding holes opened on both the front and rear sides of the rectangular through hole of the mounting plate one. Screws are rotatably penetrated through the corresponding positions of the front end of the mounting plate one with respect to the front and rear two mounting sliding holes. Slide seats are threadedly connected to the positions of the front and rear two screws located in the corresponding mounting sliding holes. An automatic laser soldering head is installed at the lower end of the slide seat, and the left ends of the front and rear two screws are connected by a transmission belt. A stepping motor is installed on the left side of the lower end of the mounting plate one through a motor seat. The output shaft of the stepping motor is fixedly connected to any one of the lead screws.

[0017] Furthermore, the material supporting mechanism includes rectangular docking ports opened on the inner walls of both the left and right ends of the U-shaped cover plate. A slide rail one is installed in the middle of the upper end of the base. An electric slider one is slidably installed on the slide rail one. A rectangular suction cup is installed at the upper end of the electric slider one. Spring support rods are slidably connected to the front and rear ends of the rectangular suction cup with auxiliary top plates. Slide rails two are installed on both the left and right sides of the upper end of the base. Electric slider two are slidably installed on the front and rear two slide rails two. A docking guide rail is jointly installed at the upper ends of the left and right two electric slider two on the same side. The opposite ends of the front and rear two auxiliary top plates are all movably attached to the docking guide rail.

[0018] Further, the displacement mechanism includes waist-shaped sliding grooves opened on the inner walls at both the left and right ends of the U-shaped cover plate. Two front and rear support sliding rods II are slidably penetrated and installed on the horizontal section of the U-shaped plate I. The left and right ends of the two front and rear support sliding rods II are respectively slidably connected to the corresponding waist-shaped sliding grooves. On both the left and right sides of the upper end of the base, a slide rail III is installed through a support column. An electric slider III is installed in the middle of each of the left and right slide rails III. A slide rail IV is jointly installed between the two left and right electric sliders III. An electric slider IV is installed in the middle of the slide rail IV. The upper end of the electric slider IV is fixedly connected to the inner wall of the upper end of the U-shaped plate I.

[0019] The technical solution provided by the present invention has the following beneficial effects compared with the prior art:

[0020] In the present invention, by respectively controlling the first-stage and second-stage telescopic ends of the two left and right second-stage pneumatic push rods, the L-shaped pressing plate I and the L-shaped pressing plate II can be driven to move downward synchronously, initially correcting the two horizontal sections of the LED lamp beads, avoiding problems such as pin warping and deformation. Moreover, multiple stoppers can cooperate with the L-shaped pressing plate I to achieve the effect of protecting and clamping the pins of the LED lamp beads, avoiding the problem that the pins may shift inward and be damaged by extrusion deformation when correcting the pins of the LED lamp beads; multiple second return-shaped plates drive the corresponding L-shaped pushing plates to move downward, which can realize the cooperation between the L-shaped pressing plate II and the L-shaped pressing plate I to jointly bend and correct the vertical sections of the pins of the LED lamp beads, thereby ensuring the soldering quality of the LED lamp beads and the PCB board.

[0021] At the same time, when the second-stage telescopic ends of the two left and right second-stage pneumatic push rods are extended, while the L-shaped pushing plate moves downward, it will drive the wedge-shaped alignment insertion plate to move downward synchronously and insert into the alignment groove, thereby realizing the quick connection of the second correction part and the first correction part. After controlling the second-stage telescopic ends of the two left and right second-stage pneumatic push rods to retract, the second correction part and the first correction part will move upward synchronously, thereby realizing the effect that the first correction part disengages from the pins of the LED lamp beads, avoiding blocking the automatic laser soldering head from soldering the LED lamp beads and the PCB board; in addition, the trapezoidal mating plate, the wedge-shaped alignment insertion plate and the alignment groove cooperate to achieve the effects of quick connection and unlocking and disengagement of the second correction part and the first correction part.

[0022] By controlling the rotation of the cylindrical cam by the servo motor, multiple circular sliding rods will drive the corresponding annular sleeves to move equidistantly, thereby realizing the effect of equidistantly adjusting the nozzle spacing, without the need to frequently replace and debug the nozzle components, effectively improving the work efficiency. Description of the Drawings

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 This is a schematic diagram of the three-dimensional structure of a device for positioning and welding the chip pins of an LED lighting fixture according to the present invention;

[0025] Figure 2 It is a three-dimensional structural schematic diagram of a displacement mechanism in a device for positioning and welding a chip pin of an LED lighting fixture according to the present invention;

[0026] Figure 3 It is a left sectional view of a device for positioning and welding the chip pins of an LED lighting fixture according to the present invention;

[0027] Figure 4 For the present invention Figure 3 A partial enlarged view of the middle A;

[0028] Figure 5 For the present invention Figure 3 A partial enlarged view of point B in the middle;

[0029] Figure 6 It is a three-dimensional structural schematic diagram of a mounting plate 1 and a shaped plate 1 in a device for positioning and welding the pins of a LED lighting fixture chip of the present invention;

[0030] Figure 7 It is a three-dimensional structural schematic diagram of a material taking mechanism in a device for positioning and welding the chip pins of an LED lighting fixture according to the present invention;

[0031] Figure 8 It is a schematic diagram of a partially cutaway three-dimensional structure of a second correction part in a device for positioning and welding the pins of a LED lighting fixture chip according to the present invention;

[0032] Fig. 9 For the present invention Figure 8 A partial enlarged view of point C in the middle;

[0033] Fig.10 It is a schematic diagram of the three-dimensional structure of an auxiliary unlocking part in a device for positioning and welding the chip pins of an LED lighting fixture according to the present invention;

[0034] Fig.11 For the present invention Fig.10 A partial enlarged view of point D in the middle;

[0035] Fig.12It is a schematic diagram of a first partial cross-section three-dimensional structure of a correction part 1 in a device for positioning and welding the pins of a LED lighting fixture chip of the present invention;

[0036] Fig.13 It is a schematic diagram of a second partial cross-section three-dimensional structure of a correction part 1 in a device for positioning and welding the pins of a LED lighting fixture chip of the present invention;

[0037] Fig.14 It is a three-dimensional structural schematic diagram of an adjustment mechanism in a device for positioning and welding the chip pins of an LED lighting fixture according to the present invention;

[0038] Fig.15 The present invention is a schematic diagram of the changes in the coordinated working states of a material taking mechanism and a pin correcting mechanism in a device for positioning and welding the chip pins of an LED lighting fixture.

[0039] The reference numerals in the figure respectively represent: 1. U-shaped cover plate; 2. base; 3. blank supporting mechanism; 31. rectangular docking port; 32. electric slider one; 33. rectangular suction cup; 34. auxiliary top plate; 35. electric slide base two; 36. docking guide rail; 4. blank picking mechanism; 41. mounting plate one; 42. U-shaped plate one; 43. U-shaped plate two; 44. secondary pneumatic push rod; 45. rectangular through hole; 46. annular sleeve; 47. blank picking part; 471. rectangular sleeve plate three; 472. connecting pipe; 473. nozzle buffer assembly; 474. rectangular connecting plate; 475. rectangular chute one; 476. limit slider; 477. kidney-shaped sliding hole; 478. rectangular chute two; 479. limit rod; 480. cylinder; 5. displacement mechanism; 51. kidney-shaped chute; 52. supporting slide rod two; 53. electric slider three; 54. electric slider four; 6. equidistant adjustment mechanism; 61. support plate; 62. transmission shaft; 63. servo motor; 64. cylindrical cam; 65. annular chute; 66. variable pitch spiral groove; 67. kidney-shaped through hole; 68. circular slide rod; 69. roller; 70. kidney-shaped limit groove; 7. pin correction mechanism; 71. rectangular sleeve plate one; 72. rectangular sleeve plate two; 73. auxiliary unlocking part; 731. mating chute; 732. mating slider; 733. guiding slide rod; 734. trapezoidal ejector rod; 74. correction part one; 741. L-shaped pressing plate one; 742. alignment groove; 743. mounting through hole; 744. supporting slide rod one; 745. L-shaped pressing plate two; 746. avoidance groove; 747. correction auxiliary group; 7471. mounting chute; 7472. rectangular slider; 7473. trapezoidal alignment plate; 7474. mounting plate two; 7475. rectangular accommodating groove; 7476. stop block; 75. correction part two; 751. figure-eight plate one; 752. circular connecting rod; 753. figure-eight plate two; 754. correction group; 755. L-shaped pushing plate; 756. rectangular mounting groove; 757. trapezoidal mating plate; 758. wedge-shaped alignment plug; 8. automatic soldering mechanism; 81. mounting slide hole; 82. lead screw; 83. slide seat; 84. automatic laser welding head; 85. stepping motor. Detailed implementation mode

[0040] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0041] The present invention will be further described below with reference to the embodiments.

[0042] Embodiment:

[0043] Please refer to Figure 1 、 Figure 3 、 Figure 7 and Fig.12 , the present invention provides a technical solution: an LED lighting fixture chip pin positioning and soldering device, comprising:

[0044] A base 2 with a U-shaped cover plate 1 installed at the upper end, a material supporting mechanism 3 is arranged on the base 2, a material taking mechanism 4 is arranged above the base 2, a displacement mechanism 5 is jointly arranged on the base 2 and the U-shaped cover plate 1, an equidistant adjusting mechanism 6 is arranged on the material taking mechanism 4, a pin correcting mechanism 7 is arranged on the material taking mechanism 4, and an automatic soldering mechanism 8 is also arranged on the material taking mechanism 4;

[0045] Among them, the material taking mechanism 4 includes a mounting plate 41 arranged above the base 2, a U-shaped plate 42 with an opening facing down is installed at the rear side of the upper end of the mounting plate 41, a U-shaped plate 43 with an opening facing backward is installed on the upper side of the front end of the U-shaped plate 42, two left and right secondary pneumatic push rods 44 are installed through the upper end of the U-shaped plate 43, a rectangular through hole 45 is opened at the position of the front end of the U-shaped plate 42 on the upper end of the mounting plate 41, a plurality of annular sleeves 46 are uniformly arranged in the rectangular through hole 45 from left to right, and a material taking part 47 is jointly arranged on the mounting plate 41 and the U-shaped plate 42.

[0046] During specific implementation, first, the staff docks the material supporting mechanism 3 with the left peripheral PCB board conveying device, sucks the PCB board and drives it to move rightward to the middle position at the upper end of the base 2 to complete the feeding work. Then, through the cooperation of the displacement mechanism 5 and the material taking mechanism 4, a plurality of LED lamp beads on the LED lamp bead feeding device arranged outside the front side of the base 2 are simultaneously sucked and driven to move to the position above the PCB board where welding needs to be performed to complete the material taking work. Then, through the cooperation of the material taking mechanism 4 and the pin correcting mechanism 7, a plurality of LED lamp beads are placed on the PCB board, and the pins of the plurality of LED lamp beads are corrected. Finally, the automatic soldering mechanism 8 performs soldering work on the plurality of LED lamp beads and the PCB board. Until the soldering work of this PCB board is completed, the material supporting mechanism 3 is docked with the right peripheral PCB board conveying device, and the PCB board is driven to move rightward to complete the discharging work.

[0047] Please refer to Figure 1-Figure 3, the stock supporting mechanism 3 includes rectangular docking ports 31 opened on the inner walls at both left and right ends of the C-shaped cover plate 1. A first slide rail is installed in the middle of the upper end of the base 2, and a first electric slider 32 is slidably installed on the first slide rail. A rectangular suction cup 33 is installed at the upper end of the first electric slider 32. Both the front and rear ends of the rectangular suction cup 33 are slidably connected to an auxiliary top plate 34 through spring support rods. Two second slide rails are installed on both the left and right sides of the upper end of the base 2, and a second electric slide block 35 is slidably installed on each of the two second slide rails. A docking guide rail 36 is jointly installed at the upper ends of the two second electric slide blocks 35 on the same side. The opposite ends of the front and rear two auxiliary top plates 34 are movably attached to the docking guide rail 36.

[0048] Please refer to Figure 1-Figure 3 , the displacement mechanism 5 includes kidney-shaped sliding grooves 51 opened on the inner walls at both left and right ends of the C-shaped cover plate 1. Two second support slide rods 52 are slidably penetrated and installed on the horizontal section of the first C-shaped plate 42. The left and right ends of the two second support slide rods 52 are respectively slidably connected to the corresponding kidney-shaped sliding grooves 51. Two third slide rails are installed on both the left and right sides of the upper end of the base 2 through support columns. A third electric slider 53 is installed in the middle of each of the two third slide rails. A fourth slide rail is jointly installed between the two third electric sliders 53. A fourth electric slider 54 is installed in the middle of the fourth slide rail. The upper end of the fourth electric slider 54 is fixedly connected to the inner wall of the upper end of the first C-shaped plate 42.

[0049] Please refer to Figure 1 , Figure 5 , Figure 6 and Figure 7, the material taking part 47 includes a plurality of rectangular sleeve plates three 471 slidably installed between the U-shaped plate one 42 and the U-shaped plate two 43. A connecting pipe 472 is installed through the middle of each of the plurality of rectangular sleeve plates three 471. The lower ends of the plurality of connecting pipes 472 are all slidably connected to the inner wall of the annular sleeve 46. A suction nozzle buffer assembly 473 is arranged at the lower end of each of the plurality of annular sleeves 46. A rectangular connecting plate 474 is installed in the middle of the front end of the U-shaped plate one 42. Two rectangular sliding grooves one 475 are opened at the corresponding positions of the front end of the U-shaped plate one 42 for the rectangular connecting plate 474. Limiting sliders 476 are installed on both the left and right sides of the rear end of the rectangular connecting plate 474. The two left and right limiting sliders 476 are respectively slidably connected in the corresponding rectangular sliding grooves one 475. A kidney-shaped sliding hole 477 is opened at the upper end of the rectangular connecting plate 474. The outer walls of the plurality of annular sleeves 46 are all slidably connected to the inner wall of the kidney-shaped sliding hole 477. Rectangular sliding grooves two 478 are opened on the inner walls of the front and rear ends of the kidney-shaped sliding hole 477. Limiting rods 479 are symmetrically installed on the front and rear sides of the outer walls of the plurality of annular sleeves 46. The plurality of limiting rods 479 are respectively slidably connected in the corresponding rectangular sliding grooves two 478. A cylinder 480 is installed at the upper end of the U-shaped plate one 42 through a mounting seat. The upper ends of the plurality of connecting pipes 472 are all connected to the cylinder 480 through spring air pipes and adapters. The first-stage telescopic ends of the two left and right secondary pneumatic push rods 44 are fixedly connected to the upper end surface of the rectangular connecting plate 474, and the second-stage telescopic ends of the two left and right secondary pneumatic push rods 44 all slidably penetrate through the lower end surface of the rectangular connecting plate 474.

[0050] When the PCB board needs to be taken, first control the electric slide seats two 35 on the front and rear sides to drive the corresponding docking guide rails 36 to approach or move away from each other respectively, so as to achieve the effect of docking with the left peripheral PCB board conveying device. Then control the electric slider one 32 to drive the rectangular suction cup 33 to move leftward to suck the PCB board, and continue to drive it to move rightward to the middle position above the base 2.

[0051] It should be noted that the peripheral LED lamp bead feeding device can adopt an automatic material changing plate type. When the LED lamp beads need to be taken, control the two left and right electric sliders three 53 to drive the slide rail four forward to the position above the material plate with LED lamp beads. Then control the first-stage telescopic ends of the two left and right secondary pneumatic push rods 44 to extend. At this time, under the action of the rectangular sliding groove two 478 and the plurality of limiting rods 479, the rectangular connecting plate 474 will drive the plurality of annular sleeves 46 to move downward. When the plurality of suction nozzle buffer assemblies 473 are closely attached to the upper ends of the LED lamp beads, control the cylinder 480 to control the plurality of suction nozzle buffer assemblies 473 to suck and hold the corresponding LED lamp beads tightly. Then control the first-stage telescopic ends of the two left and right secondary pneumatic push rods 44 to retract, and control the two left and right electric sliders three 53 to drive the slide rail four backward to the position above the PCB board where welding is required.

[0052] Please refer to Figure 5 、 Fig.12 and Fig.13 The correction part 74 includes an L-shaped pressure plate 741 symmetrically installed at the front and rear ends of the lower end of the rectangular sleeve plate 72, a positioning groove 742 is opened on the upper side of the vertical section of the L-shaped pressure plate 741, and a mounting through hole 743 is opened on the upper end of the horizontal section of the L-shaped pressure plate 741. Two left and right supporting slide bars 744 are commonly installed on the inner walls of the front and rear ends of the mounting through hole 743, and the left and right supporting slide bars 744 are commonly slidably sleeved with an L-shaped pressure plate 2 745 with rounded corners, and the parts of the left and right supporting slide bars 744 located between the L-shaped pressure plate 2 745 and the L-shaped pressure plate 1 741 are sleeved with compression springs, and the bottom end of the vertical section of the L-shaped pressure plate 741 is opened with two left and right avoidance grooves 746, and the outer right-angle end of the L-shaped pressure plate 1 741 is a wedge-shaped structure, and the front and rear L-shaped pressure plates 741 are also commonly provided with a correction auxiliary group 747.

[0053] See also Fig.12 and Fig.13 The correction auxiliary group 747 includes mounting grooves 7471 provided at opposite ends of the front and rear L-shaped pressing plates 741, and rectangular sliders 7472 are slidably connected in the mounting grooves 7471 through compression springs. A trapezoidal alignment plate 7473 is installed at one end of the rectangular slider 7472 away from the corresponding L-shaped pressing plate 741, and the inclined end of the trapezoidal alignment plate 7473 is arranged toward the annular sleeve 46. A plurality of mounting plates 7473 are evenly installed from left to right at the lower end of the L-shaped pressing plate 741. 7474, the lower sides of the opposite ends of the left and right mounting plates 7474 are wedge-shaped structures, and the lower sides of the left and right ends of the remaining mounting plates 7474 are wedge-shaped structures, and rectangular receiving grooves 7475 are opened at the opposite ends of the left and right mounting plates 7474, and the left and right ends of the remaining mounting plates 7474 are provided with rectangular receiving grooves 7475, and the plurality of rectangular receiving grooves 7475 are slidably connected with stoppers 7476 through compression springs, and the upper and lower ends of the stoppers 7476 are wedge-shaped structures.

[0054] It should be noted that when the multiple suction nozzle buffer components 473 absorb LED lamp beads from the external LED lamp bead material plate, the multiple trapezoidal alignment plates 7473 and the front and rear two L-shaped pressure plates 741 will jointly perform preliminary correction on the position of the LED lamp beads. When the position of the LED lamp beads needs to be corrected, the first-stage telescopic ends of the left and right two-stage pneumatic push rods 44 are first controlled to extend. At this time, the multiple annular sleeves 46 will drive the corresponding suction nozzle buffer components 473 to move downward until the lower end surfaces of the multiple sucked LED lamp beads are in close contact with the PCB board. During this period, the multiple trapezoidal alignment plates 7473 and the front and rear two L-shaped pressure plates 741 will jointly perform preliminary correction on the position of the LED lamp beads. When the position of the LED lamp beads needs to be corrected, the first-stage telescopic ends of the left and right two-stage pneumatic push rods 44 are first controlled to extend. At this time, the multiple annular sleeves 46 will drive the corresponding suction nozzle buffer components 473 to move downward until the lower end surfaces of the multiple sucked LED lamp beads are in close contact with the PCB board. The alignment plate 7473 and the front and rear two L-shaped pressure plates 741 will jointly correct the position of the LED lamp bead again, and under the action of the compression spring, the multiple blocks 7476 will respectively return to the corresponding rectangular accommodating grooves 7475, and then pop out to restore to their original state, thereby cooperating with the L-shaped pressure plate 741 to achieve the effect of protecting and clamping the LED lamp bead pins. At the same time, the lower end surface of the horizontal section of the L-shaped pressure plate 1 741 will contact the higher horizontal section of the LED lamp bead pin, and the lower end surface of the horizontal section of the L-shaped pressure plate 2 745 will contact the lower horizontal section of the LED lamp bead pin.

[0055] See also Figure 5-Figure 7 The correction part 2 75 includes a circular plate 751 movably fitted at the lower end of the mounting plate 41, and a circular connecting rod 752 is symmetrically installed on the upper end of the circular plate 751. The upper ends of the two circular connecting rods 752 on the left and right sides are slidably penetrated through the mounting plate 41 and fixedly connected to the secondary telescopic end of the corresponding secondary pneumatic push rod 44. The positions of the corresponding multiple annular sleeves 46 on the inner wall of the circular plate 751 are slidably installed with circular plates 753. The lower end of the circular plate 753 is symmetrically provided with a correction group 754, and the correction group 754 includes An L-shaped push plate 755 is installed at the lower end of the circular plate 753. The vertical section of the L-shaped push plate 755 is a wedge-shaped structure on the lower side of one end facing the annular sleeve 46, and the horizontal section of the L-shaped push plate 755 is provided with a rectangular mounting groove 756 towards one end of the annular sleeve 46. A trapezoidal matching plate 757 is slidably connected in the rectangular mounting groove 756 through a compression spring. A wedge-shaped alignment plug plate 758 is installed in the middle of one end of the trapezoidal matching plate 757 facing the annular sleeve 46, and the inclined ends of the trapezoidal matching plate 757 and the wedge-shaped alignment plug plate 758 are both set downward.

[0056] See also Fig.10 and Fig.11The auxiliary unlocking portion 73 includes a matching slide groove 731 symmetrically opened on the outer wall of the annular sleeve 46, and a matching slider 732 is symmetrically installed on the circular inner wall of the rectangular sleeve plate 72. The left and right matching sliders 732 are respectively slidably connected to the corresponding matching slide grooves 731. A plurality of rectangular evenly distributed guide slide rods 733 are installed on the upper end of the rectangular sleeve plate 72. A plurality of guide slide rods 733 are installed on the upper ends of the plurality of guide slide rods 733, and they slide through the rectangular sleeve plate 1 71 at the same time. The portions of the plurality of guide slide rods 733 located between the rectangular sleeve plate 1 71 and the rectangular sleeve plate 2 72 are all sleeved with compression springs, and the positions of the plurality of avoidance grooves 746 at the bottom end of the annular sleeve 46 are all installed with trapezoidal top rods 734, and the inclined ends of the trapezoidal top rods 734 are set upward.

[0057] It should be noted that, under the action of the compression spring, the L-shaped pressure plate 745 is initially located on the side of the mounting hole 743 away from the annular sleeve, and the trapezoidal matching plate 757 and the wedge-shaped alignment plug plate 758 are initially in a pop-up rectangular mounting groove 756 state. When the LED lamp bead pin needs to be corrected, the secondary telescopic ends of the left and right two-stage pneumatic push rods 44 are first controlled to extend. At this time, the circular plate 1 751 will drive multiple circular plates 753 to move downward until, under the action of the L-shaped push plate 755, the L-shaped pressure plate 745 is squeezed to move in the direction of the annular sleeve 46. At this time, the L-shaped pressure plate 745 will cooperate with the L-shaped pressure plate 1 741 to jointly correct the LED lamp bead pin, and under the action of the compression spring, the wedge-shaped alignment plug plate 758 is inserted into the alignment groove 742, thereby achieving the effect of quick connection between the correction part 2 75 and the correction part 1 74.

[0058] Then, the secondary telescopic ends of the two left and right secondary pneumatic push rods 44 are controlled to retract. At this time, the circular plate 1 751 will drive the multiple circular plates 753 to move upward and return to their original positions, and the multiple rectangular sleeve plates 72 will follow and move upward, thereby achieving the effect of detaching from the LED lamp bead pins. During this period, under the action of the compression spring, the multiple blocks 7476 will respectively return to the corresponding rectangular receiving grooves 7475, and then pop out again to return to their original positions.

[0059] See also Figure 1 , Figure 6 , Figure 8 and Fig.14 The automatic soldering mechanism 8 includes a mounting plate 41 and mounting slide holes 81 on both sides of the front and rear of the rectangular through hole 45. A lead screw 82 is installed at the left end of the mounting plate 41 corresponding to the positions of the front and rear mounting slide holes 81. The front and rear lead screws 82 are threadedly connected to a slide seat 83 at the positions corresponding to the mounting slide holes 81. An automatic laser welding head 84 is installed at the lower end of the slide seat 83, and the left ends of the front and rear lead screws 82 are connected by a transmission belt. A stepper motor 85 is installed on the left side of the lower end of the mounting plate 41 through a motor seat, and the output shaft of the stepper motor 85 is fixedly connected to any one of the lead screws.

[0060] The rotation of the connected lead screw 82 is controlled by the stepper motor 85. Under the driving action of the transmission belt, the front and rear lead screws 82 will rotate synchronously. At this time, the front and rear sliders 83 will drive the corresponding automatic laser soldering heads 84 to slide along the corresponding installation sliding holes 81 respectively. During this period, the automatic laser soldering heads 84 will automatically perform soldering work on multiple LED lamp bead pins and the PCB board. After the soldering work is completed, the first-stage telescopic ends of the left and right second-stage pneumatic push rods 44 can be controlled to retract. At this time, the multiple annular sleeves 46 will drive the nozzle buffer assembly 473 to move upward away from the LED lamp beads. At the same time, the multiple annular sleeves 46 will drive the corresponding trapezoidal ejector rods 734 to move upward. During this period, the multiple trapezoidal ejector rods 734 will respectively push the trapezoidal mating plates 757 to retract them into the corresponding rectangular installation grooves 756. The multiple trapezoidal mating plates 757 will drive the corresponding wedge-shaped alignment plug plates 758 to withdraw from the corresponding alignment grooves 742, thereby achieving the effect of unlocking and disengaging the second correction part 75 and the first correction part 74.

[0061] Please refer to Figure 4 、 Figure 5 、 Figure 6 and Fig.14 As shown in, the equal-spacing adjustment mechanism 6 includes support plates 61 installed at both the left and right ends of the U-shaped plate one 42. The lower ends of the left and right support plates 61 are fixedly connected to the mounting plate one 41. A transmission shaft 62 is rotatably penetrated through the left and right support plates 61 together. A servo motor 63 is installed at the right end of the right support plate 61 through a motor base. The output shaft of the servo motor 63 is fixedly connected to the transmission shaft 62. A cylindrical cam 64 is fixedly sleeved on the outer wall of the transmission shaft 62. An annular sliding groove 65 is opened in the middle of the outer wall of the cylindrical cam 64. A plurality of variable pitch spiral grooves 66 are symmetrically opened on the outer wall of the cylindrical cam 64. A waist-shaped through hole 67 is opened at the front end of the U-shaped plate one 42 corresponding to the position of the cylindrical cam 64. A plurality of circular sliding rods 68 are slidably installed in the cylindrical cam 64. The rear ends of the plurality of circular sliding rods 68 are rotatably installed with rollers 69. The plurality of rollers 69 respectively roll and contact in the corresponding variable pitch spiral grooves 66 and the annular sliding groove 65. Waist-shaped limiting grooves 70 are opened on the outer walls of the plurality of annular sleeves 46 corresponding to the positions of the circular sliding rods 68. The front ends of the plurality of circular sliding rods 68 are respectively slidably connected in the corresponding waist-shaped limiting grooves 70.

[0062] When it is necessary to change the soldering pitch of the LED lamp beads, the transmission shaft 62 is controlled to rotate by the servo motor 63. The transmission shaft 62 drives the cylindrical cam 64 to rotate. Under the action of the plurality of variable pitch spiral grooves 66 on the outer wall of the cylindrical cam 64, the plurality of circular sliding rods 68 will drive the corresponding annular sleeves 46 to move equidistantly until the plurality of annular sleeves 46 are in appropriate positions.

[0063] In summary, the present application adopts the (mechanism) with the following advantages:

[0064] Advantage 1. In this embodiment, whenever multiple suction nozzle buffer assemblies 473 press down on the LED lamp beads, multiple trapezoidal alignment plates 7473 and the front and rear two L-shaped pressure plates 741 will jointly correct the position of the LED lamp beads, and when the first-level telescopic ends of the left and right two-level pneumatic push rods 44 are controlled to extend, the L-shaped pressure plate 1 741 and the L-shaped pressure plate 2 745 will move downward synchronously. At this time, the lower end surface of the horizontal section of the L-shaped pressure plate 1 741 will contact the higher horizontal section of the LED lamp bead pin, and the lower end surface of the horizontal section of the L-shaped pressure plate 2 745 will contact the lower horizontal section of the LED lamp bead pin, which can preliminarily correct the warping and deformation problems of the two horizontal sections of the LED lamp bead pins.

[0065] Advantage two, in this embodiment, since the multiple blocks 7476 will be respectively returned to the corresponding rectangular receiving grooves 7475, and then pop out to restore to their original state, they can cooperate with the L-shaped pressure plate 741 to achieve the effect of protecting and clamping the LED lamp bead pins, avoiding the problem that the pins may shift inward, be squeezed, deformed and damaged when the LED lamp bead pins are corrected.

[0066] Advantage three, in this embodiment, when the first-level telescopic ends of the two left and right secondary pneumatic push rods 44 are extended, the multiple circular plates 753 will drive the corresponding L-shaped push plates 755 to move downward, and the L-shaped push plates 755 will squeeze the L-shaped pressure plate 2 745 to move toward the direction of the annular sleeve 46. At this time, the L-shaped pressure plate 2 745 and the L-shaped pressure plate 1 741 will cooperate to bend and correct the vertical section of the LED lamp bead pin, so as to ensure the soldering quality of the LED lamp bead and the PCB board.

[0067] Advantage four, in this embodiment, when the secondary telescopic ends of the left and right secondary pneumatic push rods 44 are controlled to extend, the L-shaped push plate 755 moves downward, and at the same time, it will drive the wedge-shaped alignment plug plate 758 to move downward synchronously and insert into the alignment groove 742, thereby realizing the quick connection between the correction part 2 75 and the correction part 1 74. After that, when the secondary telescopic ends of the left and right secondary pneumatic push rods 44 are controlled to retract, the correction part 2 75 and the correction part 1 74 will move upward synchronously, thereby realizing the effect of separating the correction part 1 74 from the LED lamp bead pin, avoiding blocking the automatic laser welding head 84 from soldering the LED lamp bead and the PCB board.

[0068] Advantage five, in this embodiment, when the first-stage telescopic ends of the left and right two-stage pneumatic push rods 44 are controlled to retract, the multiple annular sleeves 46 will drive the corresponding trapezoidal push rods 734 to move upward. During this period, the multiple trapezoidal push rods 734 will respectively push the trapezoidal matching plates 757 to make them return to the corresponding rectangular installation grooves 756. The multiple trapezoidal matching plates 757 will drive the corresponding wedge-shaped alignment plug plates 758 to withdraw from the corresponding alignment grooves 742, thereby achieving the effect of unlocking and disengaging the correction part 2 75 and the correction part 1 74.

[0069] Advantage six: In this embodiment, the cylindrical cam 64 is controlled to rotate by the servo motor 63, and the multiple circular slide bars 68 will drive the corresponding annular sleeves 46 to move equidistantly, thereby achieving the effect of equidistantly adjusting the spacing between the suction nozzles. There is no need to frequently replace and debug the suction nozzle components, which effectively improves work efficiency.

[0070] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A LED lighting fixture chip pin positioning welding device, characterized in that: Including: A base (2) with a U-shaped cover plate (1) installed at the upper end, a material supporting mechanism (3) is arranged on the base (2), a material taking mechanism (4) is arranged above the base (2), a displacement mechanism (5) is jointly arranged on the base (2) and the U-shaped cover plate (1), an equidistant adjusting mechanism (6) is arranged on the material taking mechanism (4), a pin correcting mechanism (7) is arranged on the material taking mechanism (4), and an automatic soldering mechanism (8) is also arranged on the material taking mechanism (4); Among them, the material taking mechanism (4) includes a first mounting plate (41) arranged above the base (2), a first U-shaped plate (42) with a downward opening is installed at the rear side of the upper end of the first mounting plate (41), a second U-shaped plate (43) with a backward opening is installed on the upper side of the front end of the first U-shaped plate (42), two left and right secondary pneumatic push rods (44) are installed through the upper end of the second U-shaped plate (43), a rectangular through hole (45) is opened at the position of the front end of the first U-shaped plate (42) on the upper end of the first mounting plate (41), a plurality of annular sleeves (46) are uniformly arranged in the rectangular through hole (45) from left to right, and a material taking part (47) is jointly arranged on the first mounting plate (41) and the first U-shaped plate (42); The pin correcting mechanism (7) includes rectangular sleeve plates one (71) fixedly sleeved on the middle parts of the outer walls of a plurality of annular sleeves (46), rectangular sleeve plates two (72) are slidably sleeved on the lower sides of the outer walls of a plurality of annular sleeves (46), an auxiliary unlocking part (73) is jointly arranged on each corresponding rectangular sleeve plate one (71), rectangular sleeve plate two (72) and annular sleeve (46), a first correcting part (74) is arranged on each of the plurality of rectangular sleeve plates two (72), and a second correcting part (75) is arranged on the first mounting plate (41).

2. The LED lighting fixture chip pin positioning welding device according to claim 1, characterized in that: The first correcting part (74) includes L-shaped pressing plates one (741) symmetrically installed at the front and rear of the lower end of the rectangular sleeve plate two (72), a positioning groove (742) is opened on the upper side of the vertical section of the L-shaped pressing plate one (741), a mounting through hole (743) is opened on the upper end of the horizontal section of the L-shaped pressing plate one (741), two left and right supporting sliding rods one (744) are jointly installed on the inner walls of the front and rear ends of the mounting through hole (743), an L-shaped pressing plate two (745) with a fillet is slidably sleeved on the two left and right supporting sliding rods one (744), and compression springs are sleeved on the parts of the two left and right supporting sliding rods one (744) located between the L-shaped pressing plate two (745) and the L-shaped pressing plate one (741), two left and right avoiding grooves (746) are opened at the bottom ends of the vertical sections of the L-shaped pressing plates one (741), and the outer right-angle ends of the L-shaped pressing plates one (741) are wedge-shaped structures, and a correcting auxiliary group (747) is jointly arranged on the front and rear two L-shaped pressing plates one (741).

3. The LED lighting fixture chip pin positioning welding device according to claim 1, characterized in that: The correction part 2 (75) comprises a circular plate 1 (751) movably fitted at the lower end of the mounting plate 1 (41), a circular connecting rod (752) being symmetrically mounted on the upper end of the circular plate 1 (751), the upper ends of the two circular connecting rods (752) being slidably penetrated through the mounting plate 1 (41) and being fixedly connected to the secondary telescopic end of the corresponding secondary pneumatic push rod (44), a circular plate 2 (753) being slidably mounted at the positions corresponding to the plurality of annular sleeves (46) on the inner wall of the circular plate 1 (751), a correction group (754) being symmetrically mounted on the lower end of the circular plate 2 (753), the correction group (754) comprising a circular plate 2 (753) and a plurality of circular sleeves (46) being slidably mounted on the inner wall of the circular plate 1 (751), An L-shaped push plate (755) is installed at the lower end of the second plate (753), the vertical section of the L-shaped push plate (755) is a wedge-shaped structure at the lower side of one end facing the annular sleeve (46), and a rectangular installation groove (756) is opened at the horizontal section of the L-shaped push plate (755) at one end facing the annular sleeve (46), a trapezoidal matching plate (757) is slidably connected in the rectangular installation groove (756) through a compression spring, and a wedge-shaped alignment plug plate (758) is installed at the middle of one end of the trapezoidal matching plate (757) facing the annular sleeve (46), and the inclined ends of the trapezoidal matching plate (757) and the wedge-shaped alignment plug plate (758) are both arranged to face downward.

4. The LED lighting fixture chip pin positioning welding device according to claim 1, characterized in that: The auxiliary unlocking portion (73) includes a matching slide groove (731) symmetrically provided on the outer wall of the annular sleeve (46), and a matching slider (732) is symmetrically installed on the circular inner wall of the rectangular sleeve plate 2 (72). The left and right matching sliders (732) are respectively slidably connected to the corresponding matching slide grooves (731). A plurality of rectangular evenly distributed guide slide bars (733) are installed on the upper end of the rectangular sleeve plate 2 (72). The upper ends of the plurality of guide slide bars (733) are all installed with limit baffles, and they slide through the rectangular sleeve plate 1 (71) at the same time. The portions of the plurality of guide slide bars (733) located between the rectangular sleeve plate 1 (71) and the rectangular sleeve plate 2 (72) are all sleeved with compression springs. The positions of the plurality of avoidance grooves (746) at the bottom end of the annular sleeve (46) are all installed with trapezoidal top rods (734), and the inclined ends of the trapezoidal top rods (734) are arranged upward.

5. The LED lighting fixture chip pin positioning welding device according to claim 1, characterized in that: The equidistant adjustment mechanism (6) includes support plates (61) installed at both the left and right ends of the C-shaped plate one (42). The lower ends of the left and right support plates (61) are fixedly connected to the mounting plate one (41). A transmission shaft (62) is rotatably installed through the left and right support plates (61) together. A servo motor (63) is installed at the right end of the right support plate (61) through a motor base. The output shaft of the servo motor (63) is fixedly connected to the transmission shaft (62). A cylindrical cam (64) is fixedly sleeved on the outer wall of the transmission shaft (62). An annular sliding groove (65) is opened in the middle of the outer wall of the cylindrical cam (64). A plurality of variable pitch spiral grooves (66) are symmetrically opened on the outer wall of the cylindrical cam (64) from left to right. A waist-shaped through hole (67) is opened at the front end of the C-shaped plate one (42) corresponding to the position of the cylindrical cam (64). A plurality of circular sliding rods (68) are slidably installed in the cylindrical cam (64). A roller (69) is rotatably installed at the rear ends of the plurality of circular sliding rods (68). The plurality of rollers (69) are respectively in rolling contact with the corresponding variable pitch spiral grooves (66) and the annular sliding groove (65). Waist-shaped limiting grooves (70) are opened on the outer walls of the plurality of annular sleeves (46) corresponding to the positions of the circular sliding rods (68). The front ends of the plurality of circular sliding rods (68) are respectively slidably connected to the corresponding waist-shaped limiting grooves (70).

6. The LED lighting fixture chip pin positioning welding device according to claim 2, characterized in that: The correction assistance group (747) includes installation sliding grooves (7471) opened at the opposite ends of the front and rear L-shaped pressing plates one (741). A rectangular slider (7472) is slidably connected in the installation sliding groove (7471) through a compression spring. A trapezoidal alignment plate (7473) is installed at the end of the rectangular slider (7472) away from the corresponding L-shaped pressing plate one (741). The inclined surface end of the trapezoidal alignment plate (7473) is arranged towards the annular sleeve (46). A plurality of installation plates two (7474) are evenly installed at the lower end of the L-shaped pressing plate one (741) from left to right. The lower sides of the opposite ends of the left and right installation plates two (7474) are wedge-shaped structures. The lower sides of the left and right ends of the remaining installation plates two (7474) are wedge-shaped structures. And a rectangular accommodation groove (7475) is opened at the opposite ends of the left and right installation plates two (7474). Rectangular accommodation grooves (7475) are provided at the left and right ends of the remaining installation plates two (7474). A stopper (7476) is slidably connected in each of the plurality of rectangular accommodation grooves (7475) through a compression spring. The upper and lower ends of the stopper (7476) are wedge-shaped structures.

7. The LED lighting fixture chip pin positioning welding device according to claim 1, characterized in that: The material taking part (47) includes a plurality of rectangular sleeve plates three (471) slidably installed together between the U-shaped plate one (42) and the U-shaped plate two (43). A connecting pipe (472) is installed through the middle of each of the plurality of rectangular sleeve plates three (471). The lower ends of the plurality of connecting pipes (472) are all slidably connected to the inner wall of the annular sleeve (46). The lower ends of the plurality of annular sleeves (46) are all provided with suction nozzle buffer assemblies (473). In the middle of the front end of the U-shaped plate one (42), a rectangular connecting plate (474) is installed. At the position corresponding to the rectangular connecting plate (474) on the front end of the U-shaped plate one (42), two rectangular sliding grooves one (475) are opened on the left and right. On the left and right sides of the rear end of the rectangular connecting plate (474), limit sliders (476) are installed. The two limit sliders (476) on the left and right are respectively slidably connected in the corresponding rectangular sliding grooves one (475). A kidney-shaped sliding hole (477) is opened at the upper end of the rectangular connecting plate (474). The outer walls of the plurality of annular sleeves (46) are all slidably connected to the inner wall of the kidney-shaped sliding hole (477). Rectangular sliding grooves two (478) are opened on the inner walls at the front and rear ends of the kidney-shaped sliding hole (477). On the outer walls of the plurality of annular sleeves (46), limit rods (479) are installed symmetrically in the front and rear. The plurality of limit rods (479) are respectively slidably connected in the corresponding rectangular sliding grooves two (478). A cylinder (480) is installed at the upper end of the U-shaped plate one (42) through a mounting seat. The upper ends of the plurality of connecting pipes (472) are all connected to the cylinder (480) through spring air pipes and adapters. The first-stage telescopic ends of the two secondary pneumatic push rods (44) on the left and right are fixedly connected to the upper end surface of the rectangular connecting plate (474), and the second-stage telescopic ends of the two secondary pneumatic push rods (44) on the left and right all slidably penetrate through the lower end surface of the rectangular connecting plate (474).

8. The LED lighting fixture chip pin positioning welding device according to claim 1, characterized in that: The automatic soldering mechanism (8) includes mounting slide holes (81) opened on both the front and rear sides of the mounting plate one (41) and the rectangular through hole (45). At the positions corresponding to the two mounting slide holes (81) on the left end of the mounting plate one (41), lead screws (82) are rotatably installed through. At the positions of the front and rear two lead screws (82) located in the corresponding mounting slide holes (81), sliding seats (83) are threadedly connected. An automatic laser soldering head (84) is installed at the lower end of the sliding seat (83), and the left ends of the front and rear two lead screws (82) are connected by a transmission belt. A stepping motor (85) is installed at the lower left side of the mounting plate one (41) through a motor seat. The output shaft of the stepping motor (85) is fixedly connected to any one of the lead screws.

9. The LED lighting fixture chip pin positioning welding device according to claim 1, characterized in that: The material supporting mechanism (3) includes rectangular docking ports (31) opened on the inner walls of the left and right ends of the U-shaped cover plate (1). A first slide rail is installed in the middle of the upper end of the base (2), and a first electric slider (32) is slidably installed on the first slide rail. A rectangular suction cup (33) is installed at the upper end of the first electric slider (32). Both the front and rear ends of the rectangular suction cup (33) are slidably connected to auxiliary top plates (34) through spring support rods. Two second slide rails are installed on the left and right sides of the upper end of the base (2), and a second electric slide base (35) is slidably installed on each of the two second slide rails. A docking guide rail (36) is jointly installed at the upper ends of the left and right second electric slide bases (35) on the same side. The opposite ends of the front and rear auxiliary top plates (34) are movably attached to the docking guide rail (36).

10. The LED lighting fixture chip pin positioning welding device according to claim 1, characterized in that: The displacement mechanism (5) includes kidney-shaped sliding grooves (51) opened on the inner walls of the left and right ends of the U-shaped cover plate (1). Two front and rear support sliding rods two (52) are slidably penetrated and installed on the horizontal section of the first U-shaped plate (42). The left and right ends of the two front and rear support sliding rods two (52) are respectively slidably connected in the corresponding kidney-shaped sliding grooves (51). Two third slide rails are installed on the left and right sides of the upper end of the base (2) through support columns. Third electric sliders (53) are installed in the middle of the two third slide rails on the left and right. A fourth slide rail is jointly installed between the two third electric sliders (53) on the left and right. A fourth electric slider (54) is installed in the middle of the fourth slide rail. The upper end of the fourth electric slider (54) is fixedly connected to the upper inner wall of the first U-shaped plate (42).

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