Chip mounting and demounting device for cob

Abstract

The utility model discloses a kind of chip dismounting devices for cob, applied in chip dismounting fixture technical field, including bottom plate, the top of bottom plate is provided with top plate, the top of top plate is symmetrically provided with clamping seat;The utility model is slidably connected with sliding block between the two sliding grooves on the top of first connecting seat and second connecting block, when stepper motor starts, can drive rotary disc to rotate, because column is installed in the position that rotary disc top is not center, thus rotary disc cooperation column drives top plate to be in the top of bottom plate with rotary disc as center to circle movement, make its top plate top two clamping seat drive PCB board circle movement, staff only needs to place hot air gun in the top of cob chip needing to dismount, without manual rotation hot air gun, can reach hot air gun evenly heating cob chip on the top of PCB board, improve uniformity, reduce staff fatigue.

Description

Technical Field

[0001] This utility model belongs to the field of chip mounting and dismounting fixture technology, and specifically relates to a chip mounting and dismounting device for COB. Background Technology

[0002] COB chips are widely used in products such as LEDs and cameras. During long-term use of these products, the COB chips on the internal PCB board are easily damaged by electrical, thermal, mechanical, environmental, or process factors. Therefore, these damaged COB chips need to be removed from the PCB board for replacement. Removing COB chips from the PCB board requires a disassembly and assembly device, and the PCB board fixing clamp is a device used to fix the PCB board in the disassembly and assembly device.

[0003] Currently, traditional fixing fixtures still have certain problems in use. For example, traditional fixing fixtures only serve to fix the PCB board. When removing the COB chips on the PCB board, the operator needs to hold a hot air gun and shake it in a circle around the chip. The circular movement of the hot air gun can ensure that the COB chip is heated evenly, avoiding damage to the pads or traces caused by local overheating and improving the efficiency of disassembly. However, when the operator holds the hot air gun and rotates it manually, it is easy to be limited by the operator's skill level, physical fatigue and other factors, resulting in uneven rotation speed, trajectory deviation and poor heating uniformity. If there are many COB chips on the PCB board that need to be replaced or repaired, the operator's fatigue is heavy. Utility Model Content

[0004] The purpose of this invention is to provide a chip assembly / disassembly device for COB (Chip On Board), which has the advantage of self-rotating.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a chip mounting and dismounting device for COB, comprising a base plate, a top plate on the top of the base plate, symmetrically arranged slot seats on the top of the top plate, a first connecting seat symmetrically fixedly connected to the top of the base plate, and a second connecting block symmetrically fixedly connected to the bottom of the top plate. Sliding grooves are provided on opposite sides of the first connecting seat and the second connecting block. Four sliding blocks are provided between the top plate and the base plate, slidingly engaging with the sliding grooves. A stepper motor is embedded in the center of the base plate, and a rotating disk is fixedly sleeved at the output end of the stepper motor. A column rotatably connected to the bottom of the top plate is mounted on the top of the rotating disk.

[0006] The above technical solution involves a sliding block that is slidably engaged between two sliding grooves on the first connecting seat and the second connecting block. When the stepper motor starts, it can drive the rotating disk to rotate. Since the column is installed on the top of the rotating disk but not in the center, the rotating disk, in conjunction with the column, drives the top plate to rotate around the rotating disk, with the top plate on top of the bottom plate. This causes the two locking seats on the top plate to drive the PCB board to rotate. The operator only needs to place the hot air gun on top of the COB chip to be removed, without manually rotating the hot air gun, to achieve uniform heating of the COB chip on the PCB board, improving uniformity and reducing operator fatigue.

[0007] The present invention is further configured such that a groove is provided on the top of the top plate, and a bidirectional threaded rod is rotatably connected inside the groove, and a connecting block that is bolted to the card seat is symmetrically threaded on the surface of the bidirectional threaded rod.

[0008] The above technical solution is adopted: when rotating the bidirectional threaded rod, it can drive the two connecting blocks on the bidirectional threaded rod to move, adjust the distance between the two connecting blocks, and thus drive the distance between the two locking seats to be adjusted.

[0009] The present invention is further configured such that guide blocks are symmetrically bolted to the bottom of the card slot, and a guide groove is provided on the top of the top plate to slide and connect with the guide blocks.

[0010] The above technical solution is adopted: the card slot seat is slidably limited.

[0011] The present invention is further configured such that pads are symmetrically placed on the top of the card slot, and elastic pressure plates are provided on the top of the pads.

[0012] The above technical solution facilitates the positioning and fixing of the PCB board placed between the two slots.

[0013] The present invention is further configured such that a limit bolt is provided at the top of the elastic pressure plate, one end of the limit bolt extends through to the bottom of the pad and is threadedly connected to the locking seat, and a compression spring is engaged between the limit bolt and the elastic pressure plate.

[0014] The above technical solution facilitates pressing the PCB board onto the two card slots.

[0015] The present invention is further configured such that the bottom of the base plate is equipped with a bracket, and the number of brackets is two and they are arranged symmetrically.

[0016] The above technical solution is adopted to support the base plate.

[0017] The present invention is further provided that the bottom of the bracket is equipped with a suction cup.

[0018] The above technical solution facilitates the fixing of the device on the platform.

[0019] In summary, this utility model has the following beneficial effects: 1. This utility model uses a sliding block that is slidably engaged between two sliding grooves on the first connecting seat and the second connecting block. When the stepper motor is started, it can drive the rotating disk to rotate. Since the column is installed on the top of the rotating disk but not in the center, the rotating disk, in conjunction with the column, drives the top plate to rotate around the rotating disk, which is located on the top of the bottom plate. This causes the two locking seats on the top of the top plate to drive the PCB board to rotate. The operator only needs to place the hot air gun on the top of the COB chip to be removed, without manually rotating the hot air gun, to achieve uniform heating of the COB chip on the PCB board, improve uniformity, and reduce operator fatigue. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a partial structural bottom view of this utility model; Figure 3 This is a partial exploded view of the structure of this utility model; Figure 4 This is a partial structural connection diagram of this utility model; Figure 5 This is a partial exploded view of the structure of this utility model.

[0021] Reference numerals: 1. Base plate; 2. Top plate; 3. Locking seat; 4. First connecting seat; 5. Second connecting block; 6. Sliding groove; 7. Sliding block; 8. Stepper motor; 9. Rotating disk; 10. Column; 11. Groove; 12. Bidirectional threaded rod; 13. Connecting block; 14. Guide block; 15. Guide groove; 16. Pad; 17. Elastic pressure plate; 18. Limiting bolt; 19. Compression spring; 20. Bracket; 21. Suction cup. Detailed Implementation

[0022] The present invention will be further described in detail below with reference to the accompanying drawings.

[0023] Example 1: refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5A chip mounting / unmounting device for COB includes a base plate 1, a top plate 2 on the top of the base plate 1, symmetrically arranged slotting seats 3 on the top of the top plate 2, a first connecting seat 4 symmetrically fixedly connected to the top of the base plate 1, and a second connecting block 5 symmetrically fixedly connected to the bottom of the top plate 2. Sliding grooves 6 are provided on opposite sides of the first connecting seat 4 and the second connecting block 5. Four sliding blocks 7 are provided between the top plate 2 and the base plate 1, slidably engaging with the sliding grooves 6. A stepper motor 8 is embedded in the center of the base plate 1. A rotating disk 9 is fixedly sleeved at the output end of the stepper motor 8. A column 10 rotatably connected to the bottom of the top plate 2 is mounted on the top of the rotating disk 9. A sliding block 7 is slidably engaged between two sliding grooves 6 on the first connecting seat 4 and the second connecting block 5. When the stepper motor 8 is started, it can drive the rotating disk 9 to rotate. Since the column 10 is installed on the top of the rotating disk 9 but not in the center, the rotating disk 9, in conjunction with the column 10, drives the top plate 2 to rotate around the top of the bottom plate 1, with the rotating disk 9 as the center. This causes the two locking seats 3 on the top of the top plate 2 to drive the PCB board to rotate. The operator only needs to place the hot air gun on the top of the COB chip to be removed, without manually rotating the hot air gun, to achieve uniform heating of the COB chip on the PCB board, improve uniformity, and reduce operator fatigue.

[0024] refer to Figure 1 The top plate 2 has a groove 11 on its top. A bidirectional threaded rod 12 is rotatably connected inside the groove 11. The surface of the bidirectional threaded rod 12 is symmetrically threaded with connecting blocks 13 that are bolted to the locking seat 3. By setting the groove 11, the bidirectional threaded rod 12 and the connecting blocks 13, when the bidirectional threaded rod 12 is rotated, the two connecting blocks 13 on the bidirectional threaded rod 12 can be moved to adjust the distance between the two connecting blocks 13, thereby adjusting the distance between the two locking seats 3.

[0025] refer to Figure 1 The bottom of the card slot 3 is symmetrically bolted with guide blocks 14, and the top of the top plate 2 is provided with a guide groove 15 that is slidably connected to the guide blocks 14. By setting the guide blocks 14 and the guide groove 15, the card slot 3 is slidably limited.

[0026] refer to Figure 1 and Figure 5 A pad 16 is symmetrically placed on the top of the card slot 3, and an elastic pressure plate 17 is provided on the top of the pad 16. By setting the pad 16 and the elastic pressure plate 17, it is convenient to fix the PCB board placed between the two card slots 3.

[0027] refer to Figure 1 and Figure 5A limit bolt 18 is provided at the top of the elastic pressure plate 17. One end of the limit bolt 18 extends through to the bottom of the pad 16 and is threadedly connected to the locking seat 3. A compression spring 19 is engaged between the limit bolt 18 and the elastic pressure plate 17. By setting the limit bolt 18 and the compression spring 19, it is convenient to press the PCB board onto the two locking seats 3.

[0028] refer to Figure 1 , Figure 2 and Figure 4 The bottom of the base plate 1 is equipped with two brackets 20, which are symmetrically arranged to support the base plate 1.

[0029] refer to Figure 2 The bottom of the bracket 20 is equipped with a suction cup 21, which makes it easy to fix the device on the platform.

[0030] Brief description of usage: When it is necessary to remove the COB chip from the PCB board, place the PCB board between the two locking seats 3, rotate the bidirectional threaded rod 12 to adjust the distance between the two locking seats 3 so that the two locking seats 3 hold the PCB board in the middle, and use the elastic pressure plate 17 to press it tight. Start the stepper motor 8 to drive the rotating disk 9 to rotate. Since the column 10 is installed on the top of the rotating disk 9 but not in the center position, the rotating disk 9, together with the column 10, drives the top plate 2 to rotate around the rotating disk 9. When the top plate 2 rotates, the second connecting block 5 moves along the same trajectory, and the sliding block 7 slides in the two sliding grooves 6 between the first connecting seat 4 and the second connecting block 5, so that the two locking seats 3 on the top of the top plate 2 drive the PCB board to rotate. The operator only needs to place the hot air gun on the top of the COB chip to be removed, without manually rotating the hot air gun, to achieve uniform heating of the COB chip on the PCB board, improve uniformity, and reduce operator fatigue.

[0031] It should be noted that parts have a lifespan and can be replaced during regular maintenance when they no longer meet performance requirements. Deterioration in performance due to prolonged use of parts is not a design defect of this application.

[0032] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A chip mounting and dismounting device for COB, comprising a base plate (1), characterized in that: The top of the base plate (1) is provided with a top plate (2), and the top of the top plate (2) is symmetrically provided with a locking seat (3). The top of the base plate (1) is symmetrically fixedly connected with a first connecting seat (4), and the bottom of the top plate (2) is symmetrically fixedly connected with a second connecting block (5). The first connecting seat (4) and the second connecting block (5) are provided with sliding grooves (6) on opposite sides. There are four sliding blocks (7) between the top plate (2) and the base plate (1) that are slidably engaged with the sliding grooves (6). The base plate (1) is embedded with a stepper motor (8). The output end of the stepper motor (8) is fixedly sleeved with a rotating disk (9). The top of the rotating disk (9) is equipped with a column (10) that is rotatably connected to the bottom of the top plate (2).

2. The chip mounting and dismounting device for COB according to claim 1, characterized in that: The top plate (2) has a groove (11) on its top. A bidirectional threaded rod (12) is rotatably connected inside the groove (11). A connecting block (13) that is bolted to the card seat (3) is symmetrically threaded on the surface of the bidirectional threaded rod (12).

3. The chip mounting and dismounting device for COB according to claim 1, characterized in that: The bottom of the card holder (3) is symmetrically bolted with guide blocks (14), and the top plate (2) has a guide groove (15) that is slidably connected to the guide blocks (14).

4. The chip mounting and dismounting device for COB according to claim 1, characterized in that: A pad (16) is symmetrically placed on the top of the card holder (3), and an elastic pressure plate (17) is provided on the top of the pad (16).

5. A chip mounting and dismounting device for COB according to claim 4, characterized in that: The top of the elastic pressure plate (17) is provided with a limit bolt (18), one end of the limit bolt (18) extends through to the bottom of the pad (16) and is threadedly connected to the locking seat (3), and a compression spring (19) is engaged between the limit bolt (18) and the elastic pressure plate (17).

6. A chip mounting and dismounting device for COB according to claim 1, characterized in that: The bottom of the base plate (1) is equipped with a bracket (20), and there are two brackets (20) arranged symmetrically.

7. A chip mounting and dismounting device for COB according to claim 6, characterized in that: The bottom of the bracket (20) is fitted with a suction cup (21).

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