BGA (ball grid array) ball mounting jig

Abstract

The utility model discloses a BGA (ball grid array) ball mounting jig, which relates to the technical field of BGA ball mounting jigs and comprises a base, two sliding rails are fixedly mounted at the top of the base, a fixing frame is slidably mounted on the outer sides of the two sliding rails, an electric push rod is fixedly mounted at the top of the base, one end of the electric push rod is fixedly connected with the fixing frame, and the other end of the electric push rod is fixedly connected with the base. According to the BGA ball mounting jig, through the arrangement of the positioning structure, the lifting structure and the scraping and conveying structure, a packaged chip can be effectively placed in the two placing grooves by moving the position of the positioning plate so as to be positioned, the packaged chip is prevented from moving, and the accuracy of the positioning of the packaged chip is improved. According to the solder ball mounting device, the solder balls are mounted on the screen plate, then the screen plate is moved to the top of the packaging chip to be attached to the packaging chip, then the two scraping plates move back and forth to scrape the solder balls into the packaging chip through the screen plate, manual operation of workers is not needed, the labor intensity of the workers is reduced, and the working efficiency of ball mounting is effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of BGA ball-planting fixture technology, specifically a BGA ball-planting fixture. Background Technology

[0002] BGA is an integrated circuit packaging technology in which the chip's connection pins are distributed on the bottom of the package in the form of ball solder, connecting to the printed circuit board. BGA ball placement refers to the precise placement of small ball solder on the bottom of the BGA (Ball Grid Array) packaged chip so that the chip can be fixed on the printed circuit board during subsequent soldering. This process is an important step in the production of modern electronic devices, especially in high-performance and high-density integrated circuit applications.

[0003] Traditional BGA ball-mounting methods are mostly performed manually. This requires a high level of skill from the operator, takes a long time, has low efficiency, and doesn't yield very good results. Utility Model Content

[0004] The purpose of this utility model is to provide a BGA ball-mounting fixture to solve the problems of traditional BGA ball-mounting methods in the prior art, which are mostly carried out by manual operation. In actual work, these methods require a lot of skill from the operator, take a long time to complete, have low efficiency, and do not achieve good results.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a BGA ball-planting fixture, comprising a base, two slide rails fixedly mounted on the top of the base, a fixed frame slidably mounted on the outer side of the two slide rails, an electric push rod fixedly mounted on the top of the base, one end of the electric push rod being fixedly connected to the fixed frame, a positioning structure provided on the inner side of the fixed frame, the positioning structure including a bidirectional screw, the bidirectional screw being rotatably mounted on the inner side of the fixed frame, and a first movable plate threadedly connected to the outer side of the bidirectional screw near both ends, both first movable plates being disposed on the inner side of the fixed frame and slidingly contacting the fixed frame, a positioning plate fixedly mounted on the top of each of the two first movable plates, and a placement groove being provided on the top of each of the two positioning plates, the movement of the two first movable plates being limited by the fixed frame.

[0006] Preferably, one end of the bidirectional screw is fixedly mounted with a worm gear through one side of the fixing frame, and two No. 1 fixing seats are fixedly mounted on one side of the fixing frame. A worm is rotatably mounted between the two No. 1 fixing seats. The worm and the worm gear are meshed and connected. One end of the worm is fixedly mounted with a throttle through one of the No. 1 fixing seats.

[0007] Preferably, the top of the base is provided with a lifting structure, which includes a support frame and a limiting seat. The support frame and the limiting seat are both fixedly installed on the top of the base. Two first screws are rotatably installed between the support frame and the limiting seat, and a second moving plate is threaded to the outer side of the two first screws.

[0008] Preferably, gears are fixedly installed on the top ends of both first screws through one side of the support frame, and the two gears mesh with each other. A U-shaped frame is fixedly installed on the top of the support frame, and a No. 1 motor is fixedly installed on the top of the U-shaped frame. The output end of the No. 1 motor passes through the U-shaped frame and is fixedly connected to one of the gears. The threads of the two first screws are opposite.

[0009] Preferably, a fixed frame is fixedly installed on one side of the second movable plate, a holding plate is fixedly installed on the inner side of the fixed frame, a stencil is fixedly installed in the middle of the holding plate, and a scraping structure is provided on the top of the fixed frame. The scraping structure includes two second fixed seats, both of which are fixedly installed on the top of the fixed frame. A second screw is rotatably installed between the two second fixed seats. Two third movable plates are threadedly connected to the outer side of the second screw. Scrapers are fixedly installed on the bottom of the two third movable plates. The two scrapers are located on the inner side of the fixed frame and slide in contact with the fixed frame. The two scrapers are in a closed state at the sides and bottom with the fixed frame and the holding plate, which can ensure that the poured solder balls will not fall off. When the two scrapers move, they can drive the solder balls to move together. When the solder balls move to the position of the stencil, they will fall from the stencil into the packaged chip.

[0010] Preferably, a guide rod is fixedly installed between the two second fixed seats. The guide rod passes through the two third moving plates and slides in contact with the two third moving plates. The guide rod can effectively limit the movement of the third moving plates and ensure that the third moving plates will not rotate or deviate.

[0011] Preferably, a forward and reverse motor is fixedly installed on one side of one of the second fixing seats, and the output end of the forward and reverse motor passes through one of the second fixing seats and is fixedly connected to the second screw.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This application, by setting up a positioning structure, a lifting structure, and a scraping structure, can effectively position the packaged chip in two placement slots by moving the positioning plate, preventing the chip from moving. Then, the stencil is moved to the top of the packaged chip and attached to it. Finally, two scrapers move back and forth to scrape the solder balls through the stencil into the packaged chip. No manual operation is required, reducing the labor intensity of the workers and effectively improving the efficiency of ball placement. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of a BGA ball implantation fixture according to the present invention;

[0015] Figure 2 This is a schematic diagram of the positioning structure of a BGA ball implantation fixture according to the present invention;

[0016] Figure 3 This is a schematic diagram of the lifting structure of a BGA ball implantation fixture according to the present invention;

[0017] Figure 4 This is a schematic diagram of the scraping and feeding structure of a BGA ball-planting fixture according to this utility model.

[0018] The following are the labels in the diagram: 1. Base; 2. Slide rail; 3. Fixing frame; 4. Electric push rod; 5. Bidirectional screw; 6. First moving plate; 7. Positioning plate; 8. Worm gear; 9. First fixing seat; 10. Worm; 11. Throttle; 12. Support frame; 13. Limiting seat; 14. First screw; 15. Second moving plate; 16. Gear; 17. U-shaped frame; 18. First motor; 19. Fixing frame; 20. Container plate; 21. Mesh plate; 22. Second fixing seat; 23. Second screw; 24. Third moving plate; 25. Scraper; 26. Guide rod; 27. Forward and reverse motor. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Example: Figure 1 - Figure 4 As shown, this utility model provides a technical solution for a BGA ball-planting fixture, including a base 1. Two slide rails 2 are fixedly installed on the top of the base 1. A fixing frame 3 is slidably installed on the outer side of the two slide rails 2. An electric push rod 4 is fixedly installed on the top of the base 1. One end of the electric push rod 4 is fixedly connected to the fixing frame 3. A positioning structure is provided on the inner side of the fixing frame 3. The positioning structure includes a bidirectional screw 5. The bidirectional screw 5 is rotatably installed on the inner side of the fixing frame 3. A first moving plate 6 is threadedly connected to the outer side of the bidirectional screw 5 near both ends. Both first moving plates 6 are set on the inner side of the fixing frame 3 and slide in contact with the fixing frame 3. A positioning plate 7 is fixedly installed on the top of each of the two first moving plates 6. A placement groove is opened on the top of each of the two positioning plates 7.

[0021] One end of the bidirectional screw 5 passes through one side of the fixing frame 3 and is fixedly installed with a worm gear 8. Two No. 1 fixing seats 9 are fixedly installed on one side of the fixing frame 3. A worm 10 is rotatably installed between the two No. 1 fixing seats 9. The worm 10 and the worm gear 8 are meshed and connected. One end of the worm 10 passes through one of the No. 1 fixing seats 9 and is fixedly installed with a throttle 11.

[0022] The top of the base 1 is provided with a lifting structure, which includes a support frame 12 and a limiting seat 13. The support frame 12 and the limiting seat 13 are both fixedly installed on the top of the base 1. Two first screws 14 are rotatably installed between the support frame 12 and the limiting seat 13. The outer side of the two first screws 14 is threadedly connected to a second moving plate 15.

[0023] The top ends of the two first screws 14 are fixedly installed with gears 16 through one side of the support frame 12. The two gears 16 are meshed with each other. A U-shaped frame 17 is fixedly installed on the top of the support frame 12. A first motor 18 is fixedly installed on the top of the U-shaped frame 17. The output end of the first motor 18 passes through the U-shaped frame 17 and is fixedly connected to one of the gears 16.

[0024] A fixed frame 19 is fixedly installed on one side of the second movable plate 15. A holding plate 20 is fixedly installed on the inner side of the fixed frame 19. A mesh plate 21 is fixedly installed in the middle of the holding plate 20. A scraping structure is provided on the top of the fixed frame 19. The scraping structure includes two second fixed seats 22. Both second fixed seats 22 are fixedly installed on the top of the fixed frame 19. A second screw 23 is rotatably installed between the two second fixed seats 22. Two third movable plates 24 are threadedly connected to the outer side of the second screw 23. Scrapers 25 are fixedly installed on the bottom of both third movable plates 24. Both scrapers 25 are located on the inner side of the fixed frame 19 and slide in contact with the fixed frame 19.

[0025] A guide rod 26 is fixedly installed between the two No. 2 fixed seats 22. The guide rod 26 passes through the two No. 3 movable plates 24 and slides in contact with the two No. 3 movable plates 24.

[0026] One of the No. 2 fixing bases 22 is fixedly installed on one side with a forward and reverse motor 27. The output end of the forward and reverse motor 27 passes through one of the No. 2 fixing bases 22 and is fixedly connected to the second screw 23.

[0027] It should be noted that this utility model is a BGA ball-planting fixture. In use, rotating the handle 11 drives the worm gear 10 to rotate, which in turn drives the worm wheel 8 to mesh and rotate, thereby driving the bidirectional screw 5 to rotate as well. This causes the two first moving plates 6 to move in opposite directions, thereby adjusting the positions of the two positioning plates 7. This adjusts the two placement slots to be the same size as the packaged chip to be planted, thus placing the packaged chip in the placement slots of the two positioning plates 7 for positioning, effectively preventing the packaged chip from moving during ball planting.

[0028] After the packaged chip is positioned, the electric push rod 4 is activated to push the fixing frame 3 to the position below the fixing frame 19. Then, the first motor 18 is activated (the specific model of the first motor 18 is not described here, but depends on the compatible equipment). The first motor 18 will drive one of the gears 16 to rotate, which in turn drives the other gear 16 to mesh and rotate, thereby driving the two first screws 14 to rotate. This will cause the second moving plate 15 to move downwards, which in turn moves the fixing frame 19, thus pressing the holding plate 20 to the top position of the fixing frame 3. At this time, the stencil 21 will be directly above the packaged chip. Next, pour the solder balls between the two scrapers 25 and start the forward and reverse motors 27. The specific model of the forward and reverse motors 27 is not described here, but should be based on the compatible equipment. The forward and reverse motors 27 will drive the second screw 23 to rotate, thereby driving the two No. 3 moving plates 24 to scrape back and forth. This will cause the two scrapers 25 and the solder balls poured between them to move to the top position of the holding plate 20. When the solder balls move to the position of the stencil 21, they will fall into the packaged chip through the stencil 21, thus completing the ball placement operation. There is no need for the staff to manually scrape them in, which reduces the labor intensity of the staff and improves the efficiency of the ball placement work.

[0029] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A BGA ball placement tool, characterized in that: The utility model provides a kind of lifting device, including base (1), the top of the base (1) is fixedly installed with two slide rails (2), the outer side of two the slide rails (2) is slidably installed with fixed frame (3), the top of the base (1) is fixedly installed with electric push rod (4), one end of the electric push rod (4) is fixedly connected with fixed frame (3), the inner side of the fixed frame (3) is provided with positioning structure, the positioning structure includes two-way screw rod (5), the inner side of the fixed frame (3) is rotatably installed with two-way screw rod (5), the outer side of two-way screw rod (5) is close to the position of both ends and is threadedly connected with No.

2. The BGA ball mounting jig according to claim 1, wherein: One moving plate (6), two the No. one moving plate (6) is set to the inner side of fixed frame (3) and is slidably contacted with fixed frame (3), the top of two the No. one moving plate (6) is fixedly installed with positioning plate (7), and the top of two the positioning plate (7) is provided with placing groove.

3. The BGA ball mounting apparatus according to claim 2, wherein: The end of the two-way screw rod (5) penetrates one side of the fixed frame (3) and is fixedly installed with a worm wheel (8), one side of the fixed frame (3) is fixedly installed with two No. one fixed seat (9), two the No. one fixed seat (9) is rotatably installed with worm (10) between, the worm (10) and the worm wheel (8) are engagedly connected, and one end of the worm (10) penetrates one of the No. one fixed seat (9) and is fixedly installed with a handle (11).

4. The BGA ball mounting apparatus according to claim 3, wherein: The top of the base (1) is provided with lifting structure, the lifting structure includes support frame (12) and limit seat (13), the support frame (12) and the limit seat (13) are fixedly installed on the top of the base (1), and two first screw rods (14) are rotatably installed between the support frame (12) and the limit seat (13).

5. The BGA ball mounting apparatus according to claim 3, wherein: The top of the base (1) is provided with lifting structure, the lifting structure includes support frame (12) and limit seat (13), the support frame (12) and the limit seat (13) are fixedly installed on the top of the base (1), and two first screw rods (14) are rotatably installed between the support frame (12) and the limit seat (13). The top of the support frame (12) is fixedly installed with U-shaped frame (17), the top of the U-shaped frame (17) is fixedly installed with No. one motor (18), and the output end of the No. one motor (18) penetrates the U-shaped frame (17) and is fixedly connected with one of the gear (16). The side of the No. two moving plate (15) is fixedly installed with fixed frame (19), the inner side of the fixed frame (19) is fixedly installed with containing plate (20), the middle position of the containing plate (20) is fixedly installed with mesh plate (21), the top of the fixed frame (19) is provided with scraping structure, the scraping structure includes two No. two fixed seats (22), two the No. two fixed seats (22) are fixedly installed on the top of the fixed frame (19), a second screw rod (23) is rotatably installed between two the No. two fixed seats (22), the outer side of the second screw rod (23) is threadedly connected with two No. three moving plates (24), two the No. three moving plates (24) are fixedly installed with scraper (25) on the bottom, and two the scraper (25) are arranged in the inner side of the fixed frame (19) and are slidably contacted with the fixed frame (19).

6. The BGA ball mounting apparatus according to claim 5, wherein: Two said No. 2 fixed seat (22) between the fixed installation has a guide rod (26), the guide rod (26) through two three moving plate (24) and with two three moving plate (24) sliding contact.

7. The BGA ball mounting apparatus according to claim 5, wherein: One side of one of said No. 2 fixed seat (22) is fixedly installed with a reversible motor (27), and the output end of the reversible motor (27) penetrates one of the No. 2 fixed seat (22) and is fixedly connected with the second screw rod (23).

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