A pre-press device for chip packaging

Abstract

The application relates to a pre-pressing device for chip packaging, which comprises a cylinder body provided with a sealed inlet and outlet on one side, a plurality of circular plates arranged in parallel on the inside of the cylinder body, baffle plates arranged on the upper and lower sides of the circular plates, a round rod penetrating through the circular plates and arranged in the cylinder body, gear teeth arranged on the outer sidewall of the circular plates in the axial direction, gears arranged in the cylinder body and meshed with the gear teeth, a plurality of groups of gears connected by a rotating shaft driven by a motor, support seats arranged at the bottom of the gears and used for supporting the circular plates, sliding channels arranged in the round rod, vertical rods arranged in the sliding channels and driven by hydraulic rods, pre-pressing plates connected with the circular plates above the cylinder body through connecting rods, and sliding openings arranged on the outer wall of the round rod and used for connecting the connecting rods and penetrating through the sliding channels. The application has the advantages of simple structure and convenient use.

Description

Technical Field

[0001] This invention relates to the field of chip packaging and processing, and in particular to a pre-pressing device for chip packaging. Background Technology

[0002] The casing used to mount semiconductor integrated circuit chips serves to house, fix, seal, and protect the chips, enhance their electrothermal performance, and act as a bridge between the chip's internal world and external circuits—the contacts on the chip are connected to the pins of the package via wires, and these pins, in turn, connect to other devices via wires on the printed circuit board. Therefore, packaging plays a crucial role in CPUs and other LSI integrated circuits. During chip packaging, sometimes surface pre-pressing is required to improve performance.

[0003] Specifically, a pre-pressing device for chip packaging, patent number CN217655851U, is used to address the shortcomings of a pre-pressing device for chip packaging, CN211238179U. Its purpose is to achieve a situation where, after the chips on a set of trays have been pre-pressed, the servo motor drives the rotating rod to continue rotating, thereby rotating another set of unpre-pressed chips directly under the pre-pressing assembly, thus improving pre-pressing efficiency. However, this device still has the following drawbacks: when the pre-pressing plate pre-presses the chips on the trays, the trays are suspended in the air for a large area while also bearing the pressure of the pre-pressing plate, which undoubtedly seriously affects their safety. Furthermore, the entire pre-pressing process is carried out in an exposed environment, which is not conducive to improving the processing safety or quality of the product. Summary of the Invention

[0004] The purpose of this invention is to provide a pre-pressure device for chip packaging.

[0005] The technical problem of this invention is mainly solved by the following technical solution:

[0006] A pre-compression device for chip packaging includes a cylindrical body sealed at both ends. An inlet and outlet are vertically arranged on one side of the cylindrical body. Several circular plates are arranged side-by-side inside the cylindrical body, with baffles at the inlet and outlet on both sides of the circular plates. A circular rod passes through the circular plates inside the cylindrical body. Gear teeth are axially arranged on the outer wall of the circular plates. Gears meshing with the gear teeth are arranged inside the cylindrical body. Multiple sets of gears are connected by a rotating shaft driven by a motor. A support base supporting the circular plates is provided at the bottom of the gears. A sliding channel is provided in the circular rod. A vertical rod driven by a hydraulic rod is arranged in the sliding channel. The vertical rod is connected to a pre-compression plate above the circular plates inside the cylindrical body via a connecting rod. A sliding opening communicating with the sliding channel and allowing the connecting rod to pass through is provided on the outer wall of the circular rod.

[0007] Preferably, a fixing seat for the circular rod to pass through is provided in the middle of the circular plate, and a bearing sleeved on the circular rod is provided in the hole in the middle of the fixing seat.

[0008] Preferably, the bottom end of the vertical rod is suspended in the sliding channel, and a spring is provided between the bottom end of the vertical rod and the bottom of the sliding channel.

[0009] Preferably, the top end of the sliding channel is connected to the outer side of the top of the cylinder, and the top of the cylinder is provided with a frame for installing hydraulic rods.

[0010] Preferably, the diameter of the circular plate is adapted to the inner diameter of the cylinder, and one end of the circular plate extends to the outside of the inlet and outlet.

[0011] The beneficial effects of this invention are as follows: This invention uses a rotating circular plate to drive the product into the cylinder through the inlet and outlet between the upper and lower sets of baffles, so that the pre-pressing of the product is carried out in the sealed space formed between the cylinder and the baffles, thereby ensuring its processing safety and improving its processing quality. Furthermore, when the product is pre-pressed by the pre-pressing plate, the rotating shaft and support seat provide support and fixation for the suspended end of the circular plate during pre-pressing, thereby improving its stability and safety. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of the present invention;

[0013] Figure 2 This is a cross-sectional view of the present invention.

[0014] In the diagram: 1. Cylinder, 2. Inlet / outlet, 3. Circular plate, 4. Baffle, 5. Circular rod, 6. Gear teeth, 7. Gear, 8. Shaft, 9. Motor, 10. Support base, 11. Sliding channel, 12. Vertical rod, 13. Hydraulic rod, 14. Connecting rod, 15. Preload plate, 16. Sliding opening, 17. Fixed base, 18. Bearing, 19. Spring, 20. Frame. Detailed Implementation

[0015] The technical solution of the present invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings.

[0016] A pre-compression device for chip packaging includes a cylindrical body 1 sealed at both ends. An inlet and outlet 2 are vertically arranged on one side of the cylindrical body 1. Several circular plates 3 are arranged side by side inside the cylindrical body 1. Baffles 4 are provided at the inlet and outlet 2 on both sides of the circular plates 3. A circular rod 5 is provided inside the cylindrical body 1, passing through the circular plates 3. A fixing seat 17 for the circular rod 5 to pass through is provided in the middle of the circular plates 3. A bearing 18 sleeved on the circular rod 5 is provided in the hole in the middle of the fixing seat 17.

[0017] The outer side wall of the circular plate 3 is axially provided with gear teeth 6, and the cylinder 1 is provided with gears 7 that mesh with the gear teeth 6. Multiple sets of gears 7 are connected by a rotating shaft 8 driven by a motor 9, and a support seat 10 supporting the circular plate 3 is provided at the bottom of the gears 7.

[0018] The circular rod 5 is provided with a sliding channel 11, and a vertical rod 12 driven by a hydraulic rod 13 is provided in the sliding channel 11. The vertical rod 12 is connected to the pre-pressing plate 15 above the circular plate 3 inside the cylinder 1 through a connecting rod 14. The outer wall of the circular rod 5 is provided with a sliding opening 16 that communicates with the sliding channel 11 and is used for the connecting rod 14 to pass through.

[0019] In this embodiment, the bottom end of the vertical rod 12 is suspended within the sliding channel 11, and a spring 19 is provided between the bottom end of the vertical rod 12 and the bottom of the sliding channel 11. When the hydraulic rod 13 drives the vertical rod 12 to move downward, and drives the pre-pressure plate 15 to move downward through the connecting rod 14 to pre-press the chip above the circle 3, the vertical rod 12 will first squeeze the spring 19 to contract it. The buffer of the spring 19 indirectly avoids the chip being damaged by excessive pressure from the pre-pressure plate 15. At the same time, when the pre-pressure plate 15 returns to its original position, the extension force of the spring 19 can provide a certain support for the components such as the vertical rod 12, reducing the pulling force of the components on the hydraulic rod 13.

[0020] like Figure 1 , 2 The top end of the sliding channel 11 is connected to the outer side of the top of the cylinder 1, and the top of the cylinder 1 is provided with a frame 20 for installing the hydraulic rod 13.

[0021] like Figure 1 , 2 The diameter of the circular plate 3 is adapted to the inner diameter of the cylinder 1, and one end of the circular plate 3 extends to the outside of the inlet and outlet 2.

[0022] The packaged chip is placed in the receiving groove on the top of the circular plate 3 outside the inlet / outlet 2 on the outside of the cylinder. The gear 7 is driven to rotate by the motor 9 and the rotating shaft 8. At this time, the gear 7 drives the circular plate 3 to rotate through the gear teeth 6. Meanwhile, the rotating shaft 8 drives the support base 10 to rotate at the bottom edge of the circular plate 3. During the rotation, the circular plate 3 carries the packaged chip from the inlet / outlet 2 between the two adjacent sets of baffles 4 into the cylinder 1. After the packaged chip is in the cylinder 1, the hydraulic rod 13 drives the vertical rod 12 to move down in the sliding channel 11. At the same time, the vertical rod 12 drives the connecting rod 14 to move down in the sliding opening 16. The connecting rod 14 drives the pre-pressure plate 15 to move down to pre-pressure the packaged chip above the circular plate 3. After the pre-pressure is completed, the pre-pressure plate 15 is reset. At the same time, the circular plate 3 is rotated to carry the pre-pressed product to the outside of the inlet / outlet 2, and the unprocessed product on the circular plate 3 outside the inlet / outlet 2 is carried into the cylinder 1 for processing.

[0023] The present invention uses a rotating circular plate 3 to drive the product into the cylinder 1 through the inlet and outlet 2 between the upper and lower baffles 4, so that the pre-pressing of the product is carried out in the sealed space formed between the cylinder 1 and the baffles 4, thereby ensuring the processing safety and improving the processing quality. When the product is pre-pressed by the pre-pressing plate 15, the rotating shaft 8 and the support seat 10 support and fix the suspended end of the circular plate 3 during pre-pressing, thereby improving its stability and safety.

[0024] The present invention has been described in detail above, but the content described is only a preferred embodiment of the present invention and should not be considered as limiting the scope of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the patent coverage of the present invention.

Claims

1. A pre-compression device for chip packaging, characterized in that: The device includes a cylindrical body sealed at both ends. An inlet and outlet are vertically arranged on one side of the cylindrical body. Several circular plates are arranged side-by-side inside the cylindrical body, with baffles at the inlet and outlet on both sides of the circular plates. A circular rod passes through the circular plates inside the cylindrical body. Gear teeth are axially arranged on the outer wall of the circular plates. Gears meshing with the gear teeth are installed inside the cylindrical body. Multiple sets of gears are connected by a rotating shaft driven by a motor. A support base supporting the circular plates is provided at the bottom of the gears. A sliding channel is provided in the circular rod. A vertical rod driven by a hydraulic rod is installed in the sliding channel. The vertical rod is connected to a pre-pressure plate above the circular plates inside the cylindrical body via a connecting rod. A sliding opening communicating with the sliding channel and allowing the connecting rod to pass through is provided on the outer wall of the circular rod.

2. The pre-pressing device for chip packaging according to claim 1, characterized in that: A fixing seat for the circular rod to pass through is provided in the middle of the circular plate, and a bearing sleeved on the circular rod is provided in the hole in the middle of the fixing seat.

3. The pre-pressing device for chip packaging according to claim 1, characterized in that: The bottom end of the vertical rod is suspended in the sliding channel, and a spring is provided between the bottom end of the vertical rod and the bottom of the sliding channel.

4. The pre-compression device for chip packaging according to claim 1, characterized in that: The top of the sliding channel is connected to the outer side of the top of the cylinder, and the top of the cylinder is provided with a frame for installing hydraulic rods.

5. The pre-pressing device for chip packaging according to claim 1, characterized in that: The diameter of the circular plate is adapted to the inner diameter of the cylinder, and one end of the circular plate extends to the outside of the inlet and outlet.

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