CN116275736A - Combined LED lamp bead welding device and welding method thereof - Google Patents

Abstract

The invention relates to the field of LED production and discloses a combined LED lamp bead welding device and a welding method thereof. In the invention, during welding, the lamp beads are firstly inversely and sequentially placed into the slots, and then pins in different states are arranged in sequence through the alignment mechanism, so that two pins of the lamp beads are orderly arranged towards one side, the subsequent alignment of the substrate and the pins is convenient, the lamp beads are automatically and orderly arranged through the alignment mechanism, the process of manually adjusting the pin orientation one by one is omitted, the labor amount and the time of manually participating in the welding process are reduced, and the subsequent welding efficiency is effectively improved.

Description

Combined LED lamp bead welding device and welding method thereof

Technical Field

The invention relates to the field of LED production, in particular to a combined LED lamp bead welding device and a welding method thereof.

Background

The LED lamp bead welding is a process of connecting components such as an LED chip, a connecting wire and a substrate together through a welding technology, and is one of important production processes in the manufacture of the LED lamp bead. Common welding methods for LED lamp beads comprise manual welding and automatic welding. In the welding process, the temperature needs to be controlled, the stable current is kept, and the accurate welding position is needed to ensure that the welding quality and performance meet the requirements. At the same time, strict adherence to relevant safety operating specifications is also required to ensure personal safety of welding personnel.

The pin of lamp pearl is because the characteristic of its material is liable to take place to bend at the in-process of transportation, so at present before inserting the pin of lamp pearl into the circuit board, all straighten out the pin of lamp pearl through manual mode, and manual inserting is not only inefficiency, moreover because the lamp pearl has two pins, and its angle can't accurate control when placing of lamp pearl to guarantee two pins of a plurality of lamp pearls and neatly arrange, when leading to follow-up combination welding, the degree of difficulty of accurate alignment further increases.

Disclosure of Invention

The invention aims to provide a combined LED lamp bead welding device and a welding method thereof, which solve the following technical problems:

1. the pins of the lamp beads are easy to bend in the transportation process due to the characteristics of the materials of the lamp beads, and the straightening efficiency of the pins of the lamp beads is low by a manual mode before the pins of the lamp beads are inserted into the circuit board;

2. because the lamp pearl has two pins, and its angle can't accurate control when placing to guarantee two pins of a plurality of lamp pearls and neatly arrange, when leading to follow-up combination welding, the degree of difficulty of accurate alignment further increases.

The aim of the invention can be achieved by the following technical scheme:

the utility model provides a combination formula LED lamp pearl welding set, includes the welding bench, set up the recess on the welding bench, be fixed with the template in the recess can dismantle, the array is provided with a plurality of slots on the template, the slot is used for the holding to wait to weld the lamp pearl, still be provided with alignment mechanism on the welding bench, alignment mechanism is used for aligning a plurality of pin on the lamp pearl.

Through the technical scheme, the lamp beads are automatically and orderly arranged by the alignment mechanism, the process of manually adjusting the orientation of the pins one by one is omitted, and the labor capacity and the time of manually participating in the welding process are reduced.

As a further scheme of the invention: the alignment mechanism includes:

the two electric sliding rails are arranged and are respectively arranged at two sides of the welding table, and a sliding table is arranged on each electric sliding rail;

the bottom of the electric lifting column is detachably fixed on the sliding table, and a limit frame is fixedly arranged at the top of the electric lifting column;

the two support frames are separately fixed on the sliding table, two symmetrically distributed rail grooves are formed in the support frames, each rail groove is formed by combining an arc groove and a vertical groove, and the distance between the two arc grooves is gradually reduced and then is transited into the vertical groove;

the sliding shafts penetrate through the limiting frames and are connected in the rail grooves in a sliding mode. Through above-mentioned technical scheme, provide the specific structure of alignment mechanism, through the setting of rail groove, let two slide shafts gradually from keeping away from to become close to in the downshifting in-process to change the interval between two alignment plates, guide the lamp pearl that pin position is different to produce the deflection, return to unified angle state, reach orderly arranged's purpose.

As a further scheme of the invention: and straightening assemblies are arranged on the sides, close to the two alignment plates, of the alignment plates, and are used for straightening pins on the lamp beads.

Through the technical scheme, when the electric lifting column upwards supports the alignment plate, the return stroke process of the alignment plate is fully utilized, and the alignment plate is straightened along the belt, so that the pins and the substrate are better aligned during welding, and meanwhile, the separate pin straightening work in the welding process is avoided.

As a further scheme of the invention: the straightening assembly includes:

the sliding grooves are provided with a plurality of groups, and the sliding grooves are symmetrically distributed in pairs; the sliding groove is formed in the bottoms of the opposite side surfaces of the two alignment plates;

the movable column is connected in the chute in a sliding way;

the movable column is elastically connected with the side wall of the chute through a return spring;

the touch piece is used for triggering the two movable columns to approach each other.

Through the technical scheme, a specific structure of the straightening component is provided, and the purpose of straightening the lamp bead pins is achieved.

As a further scheme of the invention: the trigger includes:

the electromagnet is arranged on the side wall far away from the movable column, and the movable column is made of ferromagnetic materials; the alignment plates and the reset springs are made of stainless steel;

and the proximity switch is arranged on the side wall of the vertical groove.

Through the technical scheme, the sliding shaft is utilized to trigger in the moving range of the vertical groove, so that the electromagnet works to adsorb the two movable columns to move close to each other, the pins are clamped, and the pin straightening purpose is realized by matching with the original rising action.

As a further scheme of the invention: a ferrule is sleeved on the outer ring of the movable column, and the ferrule freely rotates on the movable column;

as a further scheme of the invention, two inner side walls of the sliding chute are provided with arc-shaped transition pieces, a limit ring is fixedly arranged on the outer ring at the bottom of the ferrule, the outer edge of the limit ring is positioned on the arc-shaped transition pieces, and the bottom end of the movable column is positioned between the two arc-shaped transition pieces.

As a further scheme of the invention: the bottom of the slot is provided with an air pipe which is communicated with an external air pump, and negative pressure is generated when the air pump pumps air so as to adsorb the lamp beads in the slot.

Through the technical scheme, the lamp bead is positioned by utilizing the negative pressure pumped by the air pump, so that the substrate and the lamp bead pins are aligned and welded conveniently.

A combined LED lamp bead welding method comprises the following specific steps:

s1: inverting the lamp beads, and sequentially putting the lamp beads into slots on the template one by one in a pin-up mode;

s2: starting an electric sliding rail to move an electric lifting column and an alignment plate to the position above the lamp beads, starting the electric lifting column to shrink, pulling a limiting frame and the alignment plate which are connected to each other to move downwards, and taking a rail groove as a moving path when the alignment plate moves downwards, so that the alignment plate is gradually close to each other, arranging pins in different states, and arranging two pins of the lamp beads in order towards one side;

s3: after the alignment of the pins of a row of lamp beads is completed, the electric lifting column drives the alignment plate to ascend, and in the ascending process, the aligned pins of the straightening assembly realize straightening action;

s4: the alignment plate moves to the upper part of the pins, the electric sliding rail drives the electric lifting column and the alignment plate to the upper part of the next row of lamp beads, and the steps are repeated in sequence, so that the alignment action of the lamp beads can be completed;

s5: and aligning the preset holes on the substrate with pins of the lamp beads, and starting the welding machine to sequentially weld, so that welding actions of the lamp beads and the substrate can be completed.

The invention has the beneficial effects that:

firstly, the lamp beads are inversely and sequentially placed into the slots, pins in different states are aligned through the alignment mechanism, and two pins of the lamp beads are orderly arranged towards one side, so that subsequent substrates and pins are conveniently aligned for welding, the lamp beads are automatically and orderly arranged through the alignment mechanism, the process of manually adjusting the pin orientations one by one is omitted, the labor amount and the time of manually participating in the welding process are reduced, and the subsequent welding efficiency is effectively improved;

through setting up and straightening the assembly, in the process that the electric lifting column upwards supports the alignment plate and the next row of lamp beads are arranged and guided, the power of the ascending of the alignment plate is utilized to straighten the pins of the lamp beads which are arranged in order, the return stroke process of the alignment plate is fully utilized, and the straightening action is carried out along the belt, so that the pins and the substrate are aligned better during welding, the single pin straightening work in the welding process is avoided, and the welding efficiency is comprehensively improved;

through the arrangement of the arc-shaped transition piece, when the movable column moves close to each other, the arc-shaped transition piece continuously lifts the limit ring upwards, so that the limit ring and the ferrule continuously lift in the chute until the ferrule is ejected out of the chute, and the clamping, lifting and straightening effects on pins are realized; the invention utilizes the magnetic attraction of the electromagnet to the movable column, so that the ferrule on the movable column stretches out of the side surface of the alignment plate when the ferrule is displaced in the chute, the clamping action is carried out, the ferrule is contracted in the chute in other states, then the pins are completely avoided when the alignment plate is aligned, and the pins can lead the lamp beads to deflect freely in the slots, so that uniform arrangement is formed.

Drawings

The invention is further described below with reference to the accompanying drawings.

FIG. 1 is a three-dimensional block diagram of the present invention;

FIG. 2 is a schematic view of the internal structure of the present invention;

FIG. 3 is a schematic view of the positions of the rail groove and the limiting frame in the present invention;

FIG. 4 is a schematic view of the operation of the alignment plate of the present invention;

FIG. 5 is a cross-sectional view of the structure of FIG. 4A in accordance with the present invention;

fig. 6 is a step diagram of the welding method of the present invention.

Description of the drawings: 1. a welding table; 2. a groove; 3. a template; 4. a slot; 5. an alignment mechanism; 51. an electric slide rail; 52. a sliding table; 53. an electric lifting column; 54. a limit frame; 55. a support frame; 56. a rail groove; 57. an alignment plate; 58. a slide shaft; 6. straightening components; 61. a chute; 62. a movable column; 63. a return spring; 64. a touch member; 641. an electromagnet; 642. a proximity switch; 7. a ferrule; 8. an arc-shaped transition piece; 9. a limit ring; 10. and an air pipe.

Description of the embodiments

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Referring to fig. 1-6, the present invention is a combined type LED lamp bead welding device,

including welding bench 1, set up recess 2 on the welding bench 1, be fixed with template 3 in the recess 2 can dismantle, the array is provided with a plurality of slots 4 on the template 3, slot 4 is used for the holding to wait to weld the lamp pearl, still be provided with alignment mechanism 5 on the welding bench 1, alignment mechanism 5 is used for aligning a plurality of pin on the lamp pearl.

In the present embodiment, the form 3 is mounted on the welding table 1 by bolting and removed when maintenance is required; when welding, firstly, the lamp beads are inversely placed in the slots 4 in sequence, pins in different states are arranged through the alignment mechanism 5, and two pins of the lamp beads are orderly arranged towards one side, so that the subsequent combination welding is conveniently carried out by aligning the substrate with the pins, the lamp beads are automatically and orderly arranged through the alignment mechanism 5, the process of manually adjusting the pin orientation one by one is omitted, the labor amount and the time of manually participating in the combination welding process are reduced, and the subsequent welding efficiency is effectively improved.

As a further scheme of the invention: the alignment mechanism 5 includes:

the two electric sliding rails 51 are arranged on the two sides of the welding table 1, and a sliding table 52 is arranged on the electric sliding rails 51;

the bottom of the electric lifting column 53 is detachably fixed on the sliding table 52, and a limit frame 54 is fixedly arranged at the top of the electric lifting column 53;

the support frames 55 are respectively fixed on the sliding table 52, the support frames 55 are provided with two symmetrically distributed rail grooves 56, the rail grooves 56 are formed by combining arc grooves and vertical grooves, and the distance between the two arc grooves is gradually reduced and then is transited into the vertical grooves;

the alignment plate 57, the alignment plate 57 both sides are fixed with the slide shaft 58, the slide shaft 58 passes the spacing frame 54 back sliding connection in the rail groove 56.

In this embodiment, when the lamp beads are inserted, the pins are placed upwards, so the electric lifting columns 53 push the supporting frames 55 and the alignment plates 57 to move upwards, so that the distance between the alignment plates 57 and the surface of the template 3 is enlarged, and an operation space is reserved for inserting the lamp beads; after the lamp beads are placed, the electric lifting column 53 drives the limiting frame 54 and the sliding shafts 58 in the limiting frame 54 to move downwards, the alignment plates 57 connected with the sliding shafts 58 move downwards synchronously, and due to the arrangement of the rail grooves 56, the two sliding shafts 58 are gradually changed from far away to close in the downward movement process, so that the distance between the two alignment plates 57 is changed, the lamp beads with different pin positions are guided to deflect, and the lamp beads return to a uniform angle state, so that the aim of orderly arrangement is fulfilled;

then the electric lifting column 53 stretches upwards again, after the alignment plate 57 is supported, the electric sliding rail 51 drives the sliding table 52 and the alignment plate 57 on the sliding table 52 to move to the position of the next row of lamp beads, the above actions are repeated, the arrangement and the guide of the lamp bead pins are realized, and the lower laying is performed in advance for the alignment of the subsequent base plate and the pins, so that the efficiency of the combination welding of the lamp beads and the base plate is improved.

As a further scheme of the invention: and a straightening component 6 is arranged on one side, close to the two alignment plates 57, of the alignment plates, and the straightening component 6 is used for straightening pins on the lamp beads.

In this embodiment, through setting up and straightening subassembly 6, in the electric lift post 53 upwards hold up alignment board 57, the in-process of arranging the guide is carried out to next row of lamp pearl, utilize the power that alignment board 57 risen, straighten the orderly lamp pearl pin of having arranged, make full use of alignment board 57's return stroke process, and straighten the action in the same direction as taking, let pin and base plate better alignment when the welding, also avoided the welding in-process solitary pin to straighten work simultaneously, improve combination welding efficiency comprehensively.

As a further scheme of the invention: the straightening assembly 6 comprises:

the sliding grooves 61 are provided with a plurality of groups, and the sliding grooves 61 are symmetrically distributed in pairs; the sliding groove 61 is formed at the bottoms of the opposite side surfaces of the two alignment plates 57;

a movable column 62, wherein the movable column 62 is slidably connected in the chute 61;

the return spring 63 is elastically connected between the movable column 62 and the side wall of the sliding chute 61 through the return spring 63;

the trigger piece 64 is used for triggering the two movable posts 62 to approach each other.

In this embodiment, a specific structure of the straightening assembly 6 is provided, specifically, after the alignment plate 57 guides and levels two pins of the lamp beads, the alignment plate 57 is at a low position, and needs to return upwards until the alignment plate 57 passes over the tops of the pins and then moves to the next row of lamp beads; when the alignment plate 57 returns upwards, the touch piece 64 triggers the movable columns 62 to enable the two movable columns 62 to approach each other against the spring force of the return spring 63 until the two movable columns 62 are clamped on the pins, and as the alignment plate 57 is in a low position, the movable columns 62 can clamp the root areas of the pins, and the pins are straightened upwards by matching with the action of the upward moving back of the alignment plate 57, so that the pins are kept in a straight state, the pins are aligned with holes on the substrate better, and a foundation is laid for subsequent combination welding;

it should be noted that, in the present invention, the straightening assembly 6 does not work in the process that the alignment plate 57 moves downward and approaches each other, and the two movable columns 62 are at the maximum distance, so that an avoidance space for pins is formed, pins are integrally adjusted and aligned, and then straightening of a single pin is performed, and pin alignment and straightening are performed integrally, so that mutual interference is avoided.

As a further scheme of the invention: the trigger includes:

an electromagnet 641, wherein the electromagnet 641 is arranged on a side wall far away from the movable column 62, and the movable column 62 is made of ferromagnetic material; the alignment plate 57 and the return spring 63 are made of stainless steel;

a proximity switch 642, the proximity switch 642 being disposed on a side wall of the vertical slot.

In this embodiment, when the sliding shaft 58 on the alignment plate 57 passes through the proximity switch 642, the electromagnet 641 is activated, the electromagnet 641 generates suction to attract the movable column 62, and the movable columns 62 approach each other after overcoming the return spring 63; the proximity switch 642 is engaged with the electromagnet 641 to allow the movable column 62 to have a clamping effect on the pins when needed, thereby achieving a straightening action during the upward movement.

As a further scheme of the invention: the outer ring of the movable column 62 is sleeved with a ferrule 7, and the ferrule 7 freely rotates on the movable column 62;

in this embodiment, through the arrangement of the ferrule 7, the ferrule 7 contacts with the pins, and when the pins are clamped and pulled upwards and straightened, the ferrule 7 rotates freely, so that friction force and abrasion are reduced.

As a further scheme of the invention, two inner side walls of the sliding groove 61 are provided with arc-shaped transition pieces 8, a limit ring 9 is fixedly arranged on the outer ring at the bottom of the ferrule 7, the outer edge of the limit ring 9 is positioned on the arc-shaped transition pieces 8, and the bottom end of the movable column 62 is positioned between the two arc-shaped transition pieces 8.

In the embodiment, through the arrangement of the arc-shaped transition piece 8, when the movable column 62 moves close to each other, the arc-shaped transition piece 8 continuously lifts the limit ring 9 upwards, so that the limit ring 9 and the ferrule 7 continuously lift in the sliding groove 61 until the ferrule 7 is ejected out of the sliding groove 61, and the clamping, lifting and straightening effects on pins are realized;

the invention utilizes the magnetic attraction of the electromagnet 641 to the movable column 62, so that the ferrule 7 on the movable column 62 stretches out of the side surface of the alignment plate 57 to clamp when being displaced in the sliding groove 61, and contracts in the sliding groove 61 in other states, so that pins are completely avoided when the alignment plate 57 performs alignment work, and the pin traction lamp beads can freely deflect in the slot 4 to form uniform arrangement.

As a further scheme of the invention: the bottom of the slot 4 is provided with an air pipe 10, the air pipe 10 is communicated with an external air pump, and negative pressure is generated when the air pump is used for exhausting, so that the lamp beads in the slot 4 are adsorbed, and the lamp beads are ensured to be in a passive fixing state in the processes of straightening pins upwards and welding.

A combined LED lamp bead welding method comprises the following specific steps:

s1: the lamp beads are inverted and are sequentially placed into slots 4 on the template 3 one by one in a pin-up mode;

s2: starting the electric sliding rail 51 to move the electric lifting column 53 and the alignment plate 57 above the lamp beads, starting the electric lifting column 53 to shrink, pulling the limiting frame 54 and the alignment plate 57 which are connected to move downwards, and taking the rail groove 56 as a moving path when the alignment plate 57 moves downwards, so that the alignment plate 57 is gradually close to each other, arranging pins in different states, and arranging two pins of the lamp beads in order towards one side;

s3: after the alignment of the pins of a row of lamp beads is completed, the electric lifting column 53 drives the alignment plate 57 to ascend, and in the ascending process, the alignment pins of the straightening assembly 6 realize straightening action;

s4: the alignment plate 57 moves to the upper part of the pins, the electric sliding rail 51 drives the electric lifting column 53 and the alignment plate 57 to the upper part of the next row of lamp beads, and the steps are repeated in sequence, so that the alignment action of the lamp beads can be completed;

s5: and aligning the preset holes on the substrate with pins of the lamp beads, and starting the welding machine to sequentially weld, so that welding actions of the lamp beads and the substrate can be completed.

The working principle of the invention is as follows:

during welding, the lamp beads are firstly placed into the slots 4 in an inverted mode in sequence, pins in different states are arranged in sequence through the alignment mechanism 5, and two pins of the lamp beads are arranged in order towards one side, so that subsequent combination welding is conveniently carried out on alignment of the substrate and the pins, and the lamp beads are automatically arranged in sequence through the alignment mechanism 5;

wherein, the electric lifting column 53 pushes the supporting frame 55 and the alignment plate 57 to move upwards, thereby enlarging the distance between the alignment plate 57 and the surface of the template 3 and reserving an operation space for inserting the lamp beads; after the lamp beads are placed, the electric lifting column 53 drives the limiting frame 54 and the sliding shafts 58 in the limiting frame 54 to move downwards, the alignment plates 57 connected with the sliding shafts 58 move downwards synchronously, and due to the arrangement of the rail grooves 56, the two sliding shafts 58 are gradually changed from far away to close in the downward movement process, so that the distance between the two alignment plates 57 is changed, the lamp beads with different pin positions are guided to deflect, and the lamp beads return to a uniform angle state, so that the aim of orderly arrangement is fulfilled;

then the electric lifting column 53 stretches upwards again, after the alignment plate 57 is supported, the electric sliding rail 51 drives the sliding table 52 and the alignment plate 57 on the sliding table 52 to move to the position of the next row of lamp beads, the above actions are repeated, the arrangement and the guide of the lamp bead pins are realized, and a lower laying is made for the alignment of the subsequent substrate and the pins in advance, so that the combination welding efficiency of the lamp beads and the substrate is improved;

through setting up and straightening the assembly 6, in the process that the electric lifting column 53 upwards supports the alignment plate 57 and the next row of lamp beads are arranged and guided, the power of the ascending of the alignment plate 57 is utilized to straighten the pins of the lamp beads which are arranged in order, the return stroke process of the alignment plate 57 is fully utilized, and the straightening action is carried out along the belt, so that the pins are aligned with the substrate better in the welding process, the single pin straightening work in the welding process is avoided, and the combined welding efficiency is comprehensively improved;

specifically, after the alignment plate 57 guides and levels the two pins of the lamp beads, the alignment plate 57 is at a low position, and needs to return upwards until the alignment plate 57 passes over the tops of the pins and then moves to the next row of lamp beads; when the alignment plate 57 returns upwards, the touch piece 64 triggers the movable columns 62 to enable the two movable columns 62 to approach each other against the spring force of the return spring 63 until the two movable columns 62 are clamped on the pins, and as the alignment plate 57 is in a low position, the movable columns 62 can clamp the root areas of the pins, and the pins are straightened upwards by matching with the action of the upward moving back of the alignment plate 57, so that the pins are kept in a straight state, the pins are aligned with holes on the substrate better, and a foundation is laid for subsequent combination welding;

it should be noted that, in the present invention, the straightening assembly 6 does not work in the process of moving the alignment plate 57 downward and approaching each other, and the two movable columns 62 are at the maximum distance, so as to form an avoidance space for pins, so that the pins are integrally adjusted and aligned, and then straightening of a single pin is performed, and the pin alignment and straightening are performed integrally, thereby avoiding mutual interference;

when the sliding shaft 58 on the alignment plate 57 passes through the proximity switch 642 region, the electromagnet 641 is started, the electromagnet 641 generates suction to absorb the movable column 62, and the movable column 62 overcomes the return spring 63 and approaches each other; the proximity switch 642 is matched with the electromagnet 641, so that the movable column 62 can form a clamping effect on the pins when required, and straightening action is achieved during ascending movement;

through the arrangement of the arc-shaped transition piece 8, when the movable column 62 moves close to each other, the arc-shaped transition piece 8 continuously lifts the limit ring 9 upwards, so that the limit ring 9 and the ferrule 7 continuously lift in the sliding groove 61 until the ferrule 7 is ejected out of the sliding groove 61, and the clamping, lifting and straightening effects on pins are realized;

the invention utilizes the magnetic attraction of the electromagnet 641 to the movable column 62, so that the ferrule 7 on the movable column 62 stretches out of the side surface of the alignment plate 57 to clamp when being displaced in the sliding groove 61, and contracts in the sliding groove 61 in other states, so that pins are completely avoided when the alignment plate 57 performs alignment work, and the pin traction lamp beads can freely deflect in the slot 4 to form uniform arrangement.

The foregoing describes one embodiment of the present invention in detail, but the description is only a preferred embodiment of the present invention and should not be construed as limiting the scope of the invention. All equivalent changes and modifications within the scope of the present invention are intended to be covered by the present invention.

Claims (9)

1. The combined LED lamp bead welding device comprises a welding table (1), and is characterized in that a groove (2) is formed in the welding table (1), a template (3) is detachably fixed in the groove (2), a plurality of slots (4) are formed in the template (3) in an array manner, the slots (4) are used for accommodating lamp beads to be welded,

and the welding table (1) is also provided with an alignment mechanism (5), and the alignment mechanism (5) is used for aligning pins on a plurality of lamp beads.

2. The combined LED lamp bead welding device according to claim 1, characterized in that the alignment mechanism (5) comprises:

the welding device comprises electric sliding rails (51), wherein the two electric sliding rails (51) are arranged on the two sides of the welding table (1) respectively, and sliding tables (52) are arranged on the electric sliding rails (51);

the electric lifting column (53), the bottom of the electric lifting column (53) is detachably fixed on the sliding table (52), and a limit frame (54) is fixedly arranged at the top of the electric lifting column (53);

the support frames (55), two support frames (55) are separately fixed on the sliding table (52), two symmetrically distributed rail grooves (56) are formed in the support frames (55), the rail grooves (56) are formed by combining arc grooves and vertical grooves, and the distance between the two arc grooves is gradually reduced and then is transited into the vertical grooves;

the alignment plate (57), alignment plate (57) both sides are fixed with slide shaft (58), slide shaft (58) pass spacing frame (54) back sliding connection is in rail groove (56).

3. The combined LED lamp bead welding device according to claim 2, wherein a straightening component (6) is arranged on one side, close to the two alignment plates (57), of the alignment plates, and the straightening component (6) is used for straightening pins on the lamp beads.

4. A combined LED lamp bead welding device according to claim 3, characterized in that the straightening assembly (6) comprises:

the sliding grooves (61) are arranged in a plurality of groups, and the sliding grooves (61) are symmetrically distributed in pairs; the sliding groove (61) is formed at the bottoms of the opposite side surfaces of the two alignment plates (57);

the movable column (62) is connected in the chute (61) in a sliding way;

the movable column (62) is elastically connected with the side wall of the sliding groove (61) through the return spring (63);

and the trigger piece (64) is used for triggering the two movable columns (62) to approach each other.

5. The combination LED light bead welding device of claim 4, wherein the trigger comprises:

an electromagnet (641), wherein the electromagnet (641) is arranged on the side wall far away from the movable column (62), and the movable column (62) is made of ferromagnetic materials; the alignment plate (57) and the return spring (63) are made of stainless steel;

and a proximity switch (642), wherein the proximity switch (642) is arranged on the side wall of the vertical groove.

6. The combined type LED lamp bead welding device according to claim 4 or 5, wherein a ferrule (7) is sleeved on the outer ring of the movable column (62), and the ferrule (7) freely rotates on the movable column (62).

7. The combined LED lamp bead welding device according to claim 6, wherein two inner side walls of the sliding groove (61) are provided with arc-shaped transition pieces (8), a limit ring (9) is fixedly arranged on the outer ring at the bottom of the ferrule (7), the outer edge of the limit ring (9) is positioned on the arc-shaped transition pieces (8), and the bottom end of the movable column (62) is positioned between the two arc-shaped transition pieces (8).

8. The combined LED lamp bead welding device according to claim 1, wherein an air pipe (10) is arranged at the bottom of the slot (4), the air pipe (10) is communicated with an external air pump, and negative pressure is generated when the air pump is used for pumping air so as to adsorb the lamp beads in the slot (4).

9. A combined LED lamp bead welding method, which is applicable to the welding device according to any one of claims 1-8, characterized by the following specific steps:

s1: the lamp beads are inverted and are sequentially put into slots (4) on the template (3) one by one in a pin-up mode;

s2: starting an electric sliding rail (51) to move an electric lifting column (53) and an alignment plate (57) to the position above the lamp beads, starting the electric lifting column (53) to shrink, pulling a limiting frame (54) and the alignment plate (57) which are connected to each other to move downwards, and taking a rail groove (56) as a moving path when the alignment plate (57) moves downwards, so that the alignment plate (57) is gradually close to each other, arranging pins in different states, and arranging two pins of the lamp beads towards one side in order;

s3: after the alignment of the pins of a row of lamp beads is completed, the electric lifting column (53) drives the alignment plate (57) to lift, and in the lifting process, the straightening component (6) straightens the aligned pins to realize straightening action;

s4: the alignment plate (57) moves to the upper part of the pins, the electric sliding rail (51) drives the electric lifting column (53) and the alignment plate (57) to the upper part of the next row of lamp beads, and the steps are repeated in sequence, so that the alignment action of the lamp beads can be completed;

s5: and aligning the preset holes on the substrate with pins of the lamp beads, and starting the welding machine to sequentially weld, so that welding actions of the lamp beads and the substrate can be completed.

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