Two-welding ball adding device for two-welding tail part of light-emitting diode

Abstract

The utility model discloses a two-welding ball adding device for a two-welding tail part of a light-emitting diode, and relates to the field of light-emitting diode processing. The clamping mechanisms are arranged between the two conveying belts, the number of the clamping mechanisms is multiple, the clamping mechanisms are arranged at equal intervals, and connecting rods fixed to the conveying belts are arranged on the front portions and the rear portions of the clamping mechanisms correspondingly; the supporting seat is arranged on one side of the driving motor, a linkage mechanism is arranged between the supporting seat and the driving motor, a first mounting frame is fixedly mounted at the upper end of the supporting seat, a second mounting frame extending forwards is arranged at the top end of the first mounting frame, and metal ball placing rods are mounted on the two sides of the bottom of the second mounting frame; the movable rod is arranged on one side of the supporting base, the rear end of the movable rod extends into a sliding groove in the supporting base, an inserting rod is fixedly arranged at the front end of the movable rod, and the problem that it is difficult to accurately align a center hole of a metal ball with a light-emitting diode support is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of light emitting diode processing, in particular to a device for adding balls to two solder tails of a light emitting diode. Background Art

[0002] A light-emitting diode (LED) is a device that converts electrical energy into light based on the PN junction characteristics of a semiconductor diode. Its basic operating principle is an electro-optical conversion process: when current passes through the PN junction, electrons and holes recombine and release photons, thereby generating light. The LED packaging process typically includes chip preparation, bracket fabrication, die bonding, wire bonding, sealing, cutting, and testing. Wire bonding is a key step in connecting the LED chip to the electrodes on the bracket, while secondary bonding may refer to further reinforcement or processing after the wire bonding. By adding balls to the tail, conductivity can be enhanced, resistance can be reduced, and thus the luminous efficiency and stability of the LED can be improved. The addition of balls can increase the contact area and reduce contact resistance.

[0003] In the existing technology, when adding balls to the tail of an LED, due to the thin LED bracket, the center hole of the metal ball is difficult to accurately align with the bracket, which not only increases the production difficulty but also affects the production efficiency of the LED. Therefore, it does not meet the existing needs. In this regard, we propose a device for adding balls to the tail of an LED with two solder joints. Utility Model Content

[0004] The purpose of the utility model is to provide a device for adding two solder balls to two solder tails of a light emitting diode, so as to solve the problem in the background art that the center hole of the metal ball is difficult to accurately align with the light emitting diode bracket.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a device for adding balls to the two solder tails of a light-emitting diode, comprising a frame, drive rollers rotatably mounted on both sides of the frame, conveyor belts symmetrically mounted on the front and rear sides of the drive rollers, and a drive motor fixedly mounted on one side of the rear end of the frame; and further comprising:

[0006] A clamping mechanism is provided between the two conveyor belts. A plurality of clamping mechanisms are provided and are arranged equidistantly. Connecting rods fixed to the conveyor belts are provided at the front and rear of the clamping mechanism.

[0007] A support base is provided on one side of the drive motor and is fixed to the frame. A linkage mechanism is provided between the support base and the drive motor. A first mounting bracket is fixedly mounted on the upper end of the support base. A second mounting bracket is provided on the top end of the first mounting bracket and extends forward. Metal ball placement rods are installed on both sides of the bottom of the second mounting bracket.

[0008] The movable rod is arranged on one side of the support seat, and the rear end of the movable rod extends into the slide groove inside the support seat. The front end of the movable rod is fixedly provided with an insertion rod, and the insertion rod is clamped with the metal ball placement rod.

[0009] Preferably, a rack is provided on the bottom surface of one end of the movable rod located inside the support seat, and a first sector gear is installed below the rack. The axis of the first sector gear is fixed to the support seat, and the outer gear ring of the first sector gear is engaged with the rack.

[0010] Preferably, a spring is installed between the movable rod and the sliding groove inside the support seat.

[0011] Preferably, the linkage mechanism includes a second sector gear, and the second sector gear is connected to the output shaft of the driving motor, one side of the second sector gear is meshed with a transmission gear, the shaft at the rear end of the transmission gear is connected to a transmission roller on one side inside the frame, the shaft at the front end of the transmission gear is provided with a driving bevel gear, one side of the driving bevel gear is meshed with a driven bevel gear, pulleys are installed on the shafts at one end of the first sector gear and the driving bevel gear, and the upper and lower pulleys are connected by belts.

[0012] Preferably, two clamping plates are symmetrically installed inside the clamping mechanism, and the clamping plates are arc-shaped structures. The sliding rod at the outer end of the clamping plate extends into the limiting sliding groove inside the clamping mechanism, and a support spring is installed between the sliding rod of the clamping plate and the limiting sliding groove inside the clamping mechanism.

[0013] Preferably, the clamping mechanism is located under the ball adding station, and the center of the clamping mechanism and the midpoint of the center line between the two metal ball placement rods are maintained on the same vertical line.

[0014] Preferably, the light emitting diodes on the clamping mechanism are taken and placed by an external manipulator.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. The utility model is provided with a flexible ball adding mechanism. After the light emitting diode moves to the bottom of the metal ball placing rod, the light emitting diode bracket is aligned with the metal ball placing rod. Through the rotation of the first sector gear, its outer gear ring is engaged with the rack, driving the movable rod to move backward, so that the insertion rod loses the limit of the metal ball on the metal ball placing rod. Under the action of gravity, the metal ball moves along the rod body to the light emitting diode bracket. Then, as the first sector gear loses the engagement with the rack, the insertion rod is quickly moved close to the metal ball placing rod under the action of the spring to limit the previous metal ball. This structure can quickly realize the connection between the metal ball and the light emitting diode, without the need for staff to align one by one, and can effectively improve the ball adding efficiency.

[0017] 2. The utility model is provided with a ball adding and conveying linkage mechanism. By turning on the driving motor, the second sector gear is driven to rotate. When its outer gear ring is engaged with the transmission gear, the transmission rollers on both sides of the frame are driven to rotate, thereby driving the two conveyor belts on the transmission rollers to move. The movement of the light-emitting diode after positioning inside the clamping mechanism is realized through the conveyor belt. At the same time, the transmission gear drives the active bevel gear to rotate. Under the meshing action, the driven bevel gear drives the lower pulley to rotate, and the upper pulley drives the first sector gear to rotate in conjunction with the belt. Then, when the light-emitting diode is located below the metal ball placement rod, the insertion rod can be separated from the metal ball. On the one hand, the intermittent transportation of the light-emitting diode is realized, and on the other hand, the linkage mechanical design can ensure the accuracy of the metal ball placement.

[0018] 3. The utility model is provided with a clamping mechanism, which is used to place and remove the light-emitting diode by a robot. When placing and removing the light-emitting diode, the robot locates the head of the light-emitting diode and inserts it between the clamping pieces. The movable rod on the outside of the clamping piece extends to the inside of the clamping mechanism, and the two are connected by a spring. After the light-emitting diode enters between the clamping pieces, the squeezing force causes the clamping piece to expand, which facilitates the entry of the light-emitting diode. At the same time, under the reaction force of the spring, the clamping piece is supported to ensure the stability of the light-emitting diode inside it. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional diagram of the utility model;

[0020] Figure 2 It is a partial top view of the utility model;

[0021] Figure 3 This is a schematic diagram of the rod transmission structure of the utility model;

[0022] Figure 4 This is a schematic diagram of the linkage between the rod transmission structure and the drive motor of the utility model;

[0023] Figure 5 For the utility model Figure 1 A partial enlarged view of area A in the middle.

[0024] In the figure: 1. frame; 2. drive motor; 3. support base; 4. first mounting frame; 5. second mounting frame; 6. metal ball placement rod; 7. conveyor belt; 8. connecting rod; 9. clamping mechanism; 10. clamping plate; 11. movable rod; 12. insertion rod; 13. spring; 14. first sector gear; 15. rack; 16. pulley; 17. belt; 18. driven bevel gear; 19. driving bevel gear; 20. transmission gear; 21. second sector gear. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0026] See also Figure 1-5 The present invention provides an embodiment of a device for adding balls to the tails of light-emitting diodes, comprising a frame 1, drive rollers rotatably mounted on both sides of the frame 1, conveyor belts 7 symmetrically mounted on the front and rear sides of the drive rollers, and a drive motor 2 fixedly mounted on one side of the rear end of the frame 1; and further comprising:

[0027] A clamping mechanism 9 is provided between the two conveyor belts 7. There are multiple clamping mechanisms 9, which are arranged equidistantly. Connecting rods 8 fixed to the conveyor belts 7 are provided at the front and rear of the clamping mechanism 9.

[0028] The support base 3 is arranged on one side of the drive motor 2 and is fixed to the frame 1. A linkage mechanism is provided between the support base 3 and the drive motor 2. A first mounting bracket 4 is fixedly mounted on the upper end of the support base 3. A second mounting bracket 5 extending forward is provided on the top end of the first mounting bracket 4. Metal ball placement rods 6 are installed on both sides of the bottom of the second mounting bracket 5.

[0029] The movable rod 11 is arranged on one side of the support seat 3, and the rear end of the movable rod 11 extends into the slide groove inside the support seat 3. The front end of the movable rod 11 is fixedly provided with an insertion rod 12, and the insertion rod 12 is clamped with the metal ball placement rod 6.

[0030] With the cooperation of the metal ball placement rod 6 and the insertion rod 12, the metal ball can be quickly connected to the light-emitting diode without the need for staff to align them one by one, which can effectively improve the ball adding efficiency. On the one hand, the linkage mechanism realizes the intermittent delivery of the light-emitting diode, and on the other hand, the linkage mechanical design can ensure the accuracy of the metal ball placement.

[0031] See also Figure 3The outer gear ring of the first sector gear 14 meshes with the rack 15, and a spring 13 is installed between the movable rod 11 and the slide groove inside the support seat 3. After the light-emitting diode moves to the bottom of the metal ball placement rod 6, the light-emitting diode bracket is aligned with the metal ball placement rod 6. Through the rotation of the first sector gear 14, its outer gear ring meshes with the rack 15, driving the movable rod 11 to move backward, so that the insertion rod 12 loses the limit of the metal ball on the metal ball placement rod 6. Under the action of gravity, the metal ball moves along the rod body to the bracket of the light-emitting diode. Then, as the first sector gear 14 loses meshing with the rack 15, the spring 13 quickly makes the insertion rod 12 close to the metal ball placement rod 6, limiting the previous metal ball.

[0032] See also Figure 4 The linkage mechanism includes a second sector gear 21, and the second sector gear 21 is connected to the output shaft of the driving motor 2. One side of the second sector gear 21 is meshed with a transmission gear 20. The shaft at the rear end of the transmission gear 20 is connected to the transmission roller on one side of the inside of the frame 1. The shaft at the front end of the transmission gear 20 is provided with a driving bevel gear 19, and one side of the driving bevel gear 19 is meshed with a driven bevel gear 18. Pulleys 16 are installed on the shafts at one end of the first sector gear 14 and the driving bevel gear 19. The upper and lower pulleys 16 are connected by a belt 17. By turning on the driving motor 2, the second sector gear 2 is driven When the gear 21 rotates and its outer gear ring engages with the transmission gear 20, it drives the transmission rollers on both sides of the frame 1 to rotate, thereby driving the two conveyor belts 7 on the transmission rollers to move, and the movement of the light-emitting diode after positioning inside the clamping mechanism 9 is realized through the conveyor belt 7. At the same time, the transmission gear 20 drives the active bevel gear 19 to rotate, and the driven bevel gear 18 drives the lower pulley 16 to rotate under the meshing action, and cooperates with the belt 17 to realize the upper pulley 16 to drive the first sector gear 14 to rotate. Then, when the light-emitting diode is located below the metal ball placement rod 6, the insertion rod 12 can be separated from the metal ball.

[0033] See also Figure 2Two clamping pieces 10 are symmetrically installed inside the clamping mechanism 9. The clamping pieces 10 are arc-shaped. The sliding rod at the outer end of the clamping piece 10 extends into the limiting slide groove inside the clamping mechanism 9, and a supporting spring is installed between the sliding rod of the clamping piece 10 and the limiting slide groove inside the clamping mechanism 9. The clamping mechanism 9 is located under the ball adding station. The center of the circle of the clamping mechanism 9 and the midpoint of the center line of the circle between the two metal ball placement rods 6 are kept on the same vertical line. The head of the light-emitting diode is positioned by the manipulator and inserted between the clamping pieces 10. The movable rod 11 on the outside of the clamping piece 10 extends to the inside of the clamping mechanism 9 and the two are connected by a spring. After the light-emitting diode enters between the clamping pieces 10, the extrusion force causes the clamping piece 10 to expand, which is convenient for the entry of the light-emitting diode. At the same time, under the reaction force of the spring, the clamping piece is supported.

[0034] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A device for adding balls to the tails of light-emitting diodes, comprising a frame (1), transmission rollers being rotatably mounted on both sides of the frame (1), conveyor belts (7) being symmetrically mounted on the front and rear sides of the transmission rollers, and a drive motor (2) being fixedly mounted on one side of the rear end of the frame (1); Its characteristics are: Also includes: A clamping mechanism (9) is provided between the two conveyor belts (7), wherein a plurality of clamping mechanisms (9) are provided and are arranged at equal intervals, and a connecting rod (8) fixed to the conveyor belts (7) is provided at the front and rear of each clamping mechanism (9); A support base (3) is provided on one side of the drive motor (2), and the support base (3) is fixed to the frame (1). A linkage mechanism is provided between the support base (3) and the drive motor (2). A first mounting frame (4) is fixedly installed on the upper end of the support base (3). A second mounting frame (5) extending forward is provided on the top end of the first mounting frame (4). Metal ball placement rods (6) are installed on both sides of the bottom of the second mounting frame (5). A movable rod (11) is arranged on one side of the support seat (3), the rear end of the movable rod (11) extends into a slide groove inside the support seat (3), the front end of the movable rod (11) is fixedly provided with an insertion rod (12), and the insertion rod (12) is clamped with the metal ball placement rod (6).

2. The device for adding two solder tails and two solder balls to a light emitting diode according to claim 1, characterized in that: The bottom surface of the movable rod (11) at one end inside the support seat (3) is provided with a rack (15), and a first sector gear (14) is installed below the rack (15). The shaft of the first sector gear (14) is fixed to the support seat (3), and the outer gear ring of the first sector gear (14) is meshed with the rack (15).

3. The device for adding two solder tails and two solder balls to a light emitting diode according to claim 2, characterized in that: A spring (13) is installed between the movable rod (11) and the sliding groove inside the support seat (3).

4. The device for adding two solder tails and two solder balls to a light emitting diode according to claim 2, characterized in that: The linkage mechanism includes a second sector gear (21), and the second sector gear (21) is connected to the output shaft of the drive motor (2); one side of the second sector gear (21) is meshed with a transmission gear (20); the shaft at the rear end of the transmission gear (20) is connected to a transmission roller on one side inside the frame (1); the shaft at the front end of the transmission gear (20) is provided with a driving bevel gear (19); one side of the driving bevel gear (19) is meshed with a driven bevel gear (18); pulleys (16) are installed on the shafts at one end of the first sector gear (14) and the driving bevel gear (19); and the upper and lower pulleys (16) are connected by a belt (17).

5. The device for adding two solder tails and two solder balls to a light emitting diode according to claim 1, characterized in that: Two clamping plates (10) are symmetrically installed inside the clamping mechanism (9), and the clamping plates (10) are arc-shaped structures. The sliding rod at the outer end of the clamping plate (10) extends into the limiting sliding groove inside the clamping mechanism (9), and a supporting spring is installed between the sliding rod of the clamping plate (10) and the limiting sliding groove inside the clamping mechanism (9).

6. The device for adding two solder tails and two solder balls to a light emitting diode according to claim 1, characterized in that: The clamping mechanism (9) is located below the ball adding station, and the center of the clamping mechanism (9) and the midpoint of the center line between the two metal ball placement rods (6) are kept on the same vertical line.

7. The device for adding two solder tails and two solder balls to a light emitting diode according to claim 1, characterized in that: The light emitting diode on the clamping mechanism (9) is taken and placed by an external manipulator.

Images