Chip unsealing tool clamp

Abstract

The utility model discloses a chip unsealing work fixture, which relates to the technical field of semiconductor packaging test equipment, and comprises a fixture bottom plate, a rotating plate inserted on the fixture bottom plate, at least two vertical plate adjusting blocks arranged above the rotating plate in a sliding manner, and at least two vertical plate adjusting blocks arranged above the rotating plate in a sliding manner, the rotating plates are symmetrically arranged by taking the axis of the rotating plate as the center; the at least two needle pressing seats are connected to the top of the vertical plate adjusting block; the positioning pressing needles are arranged on the vertical plate adjusting block in a sliding mode, correspond to the pressing needle bases in number and position and are used in cooperation with the pressing needle bases to clamp a chip; the slidable vertical plate adjusting block can adapt to clamping of chips of different sizes and specifications, the reset spring drives the positioning pressing needle to be automatically adjusted, the clamping force can be adjusted according to the chips, the positioning pressing needle is prevented from damaging the surfaces of the chips while clamping, the contact area is limited by the contact portion of the positioning pressing needle and the pressing needle base, and the clamping efficiency is improved. And the risk of damage to the chip caused by clamping is reduced.

Description

Technical Field

[0001] This utility model relates to the field of semiconductor packaging and testing equipment technology, specifically to chip unpacking fixtures. Background Technology

[0002] In the semiconductor industry, chip unpacking is a crucial step for obtaining information about the chip inside the package, performing failure analysis, or reverse engineering. Traditional chip unpacking processes often suffer from problems such as unstable clamping, easy damage to the chip surface, and insufficient positioning accuracy. This not only affects unpacking efficiency but can also cause irreversible damage to the chip. Therefore, developing a tooling fixture that can stably clamp, effectively protect, and accurately position chips, and is suitable for various types of chips, is of paramount importance. Utility Model Content

[0003] The purpose of this invention is to provide a chip unpacking fixture to solve the problems mentioned in the background art.

[0004] To solve the above-mentioned technical problems, the chip unpacking fixture provided by this utility model includes a fixture base plate and a rotating plate inserted into the fixture base plate, wherein the axes of the fixture base plate and the rotating plate coincide with each other.

[0005] At least two vertical plate adjustment blocks are slidably arranged above the rotating plate and symmetrically arranged about the axis of the rotating plate.

[0006] At least two pressure needle holders are connected to the top of the vertical plate adjusting block;

[0007] Positioning pins are slidably mounted on the vertical plate adjustment block, and their number and position correspond to those of the pin holder. They are used in conjunction with the pin holder to clamp the chip.

[0008] A reset spring is connected at one end to the vertical plate adjusting block and at the other end to the positioning pressure pin. The rotating plate is equipped with a driving assembly for driving the vertical plate adjusting block to slide.

[0009] Furthermore, a positioning pin is inserted into the vertical plate adjusting block, and one end of the positioning pin extends into the vertical plate adjusting block to limit the positioning pressure pin.

[0010] Furthermore, the vertical plate adjusting block has a slot that matches the positioning pin.

[0011] Furthermore, the drive assembly includes a mounting base rotatably connected to the rotating plate, a bidirectional lead screw rotatably connected within the mounting base, and two symmetrical nuts threaded onto the bidirectional lead screw, the tops of which extend to the outside of the mounting base and connect to the bottom of the vertical plate adjusting block.

[0012] Furthermore, a guide rod is connected inside the mounting base, and the nut is slidably connected to the guide rod, with a sliding opening on the nut that matches the guide rod.

[0013] Furthermore, mounting plates are connected to both sides of the mounting base, and fastening screws are threaded onto the mounting plates. A guide groove is provided on the rotating plate, and one end of the fastening screw extends into the guide groove.

[0014] Furthermore, the rotating plate is connected to two symmetrical diagonal clamping handles, and the diagonal clamping handles are chamfered.

[0015] Furthermore, one end of the bidirectional lead screw extends to the outside of the mounting base and is connected to a knob, which is fitted with an anti-slip sleeve.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. The sliding upright adjustment block can accommodate chips of different sizes and specifications. The reset spring drives the positioning pin to adjust automatically. The clamping force can be adjusted according to the chip, so that the positioning pin avoids damaging the chip surface while clamping. The contact area between the positioning pin and the pin seat is limited, further reducing the risk of damage to the chip during clamping.

[0018] 2. The rotatable mounting base can be adjusted to any radial angle, which improves the adaptability of the equipment in different working scenarios. The guide groove on the rotating plate provides guidance for rotation, and the fastening screws on the mounting plate can be quickly tightened and fixed after the mounting base is adjusted to a suitable angle, ensuring that the angle of the equipment remains stable during operation. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a cross-sectional view of the present invention;

[0021] Figure 3 This utility model Figure 2 Enlarged view of the structure at point A in the middle;

[0022] Figure 4 This utility model Figure 2 Enlarged view of the structure at point B.

[0023] In the diagram: 1. Fixture base plate; 2. Rotating plate; 301. Vertical plate adjusting block; 302. Pressure needle seat; 303. Positioning pressure needle; 304. Return spring; 305. Positioning pin; 401. Mounting base; 402. Two-way lead screw; 403. Nut; 5. Guide rod; 6. Guide groove; 7. Fastening screw; 8. Diagonal clamping handle; 9. Mounting plate. Detailed Implementation

[0024] 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.

[0025] Please see Figure 1-4 This utility model provides a technical solution: a chip unpacking fixture, including a fixture base plate 1 and a rotating plate 2 inserted into the fixture base plate 1, wherein the axes of the fixture base plate 1 and the rotating plate 2 coincide with each other, including,

[0026] At least two vertical plate adjusting blocks 301 are slidably disposed above the rotating plate 2 and are symmetrically arranged about the axis of the rotating plate 2.

[0027] There are at least two pressure needle seats 302, which are connected to the top of the vertical plate adjusting block 301;

[0028] Positioning pins 303 are slidably mounted on the vertical plate adjusting block 301, and their number and position correspond to those of the pin holder 302. They are used in conjunction with the pin holder 302 to clamp the chip.

[0029] The reset spring 304 is connected at one end to the upright plate adjusting block 301 and at the other end to the positioning pressure pin 303. The rotating plate 2 is provided with a drive assembly for driving the upright plate adjusting block 301 to slide.

[0030] It should be noted that a central shaft is provided on the fixture base plate 1, which mates with the central shaft hole integrally formed in the rotating plate 2, and is used to position the center of the fixture.

[0031] In practice, the two sliding vertical plate adjustment blocks 301 are first set to accommodate chips of different sizes. Then, the chip is placed on the positioning pin 303. At this time, the reset spring 304 can use its elasticity to drive the positioning pin 303 to slide vertically and cooperate with the pin seat 302 to clamp and fix the chip. This setting can automatically adjust the clamping force according to the chip size to ensure stable clamping and no damage to the chip surface. In addition, the contact area between the positioning pin 303 and the pin seat 302 and the chip is designed to limit the contact area, further reducing damage to the chip during clamping.

[0032] See Figure 3 A positioning pin 305 is inserted into the upright plate adjusting block 301. One end of the positioning pin 305 extends into the upright plate adjusting block 301 to limit the positioning pressure pin 303.

[0033] In practice, the positioning pin 305 can limit the positioning pressure pin 303, further improving the stability when clamping the chip.

[0034] See Figure 3 The vertical plate adjusting block 301 has a slot that matches the positioning pin 305.

[0035] In practice, the slot can facilitate the sliding of the positioning pin 305 on the vertical plate adjusting block 301, and make it easier for the positioning pin 305 to limit the positioning pressure pin 303.

[0036] refer to Figure 2 The drive assembly includes a mounting base 401 rotatably connected to the rotating plate 2. A bidirectional lead screw 402 is rotatably connected inside the mounting base 401. Two symmetrical nuts 403 are threaded onto the bidirectional lead screw 402. The top of the nuts 403 extends to the outside of the mounting base 401 and is connected to the bottom of the vertical plate adjusting block 301.

[0037] In practice, rotating the bidirectional lead screw 402 can drive the nut 403 to move relative to or away from each other, thereby adjusting the distance of the vertical plate adjusting block 301, which is convenient for fixing chips of different models.

[0038] refer to Figure 2 The mounting base 401 is connected to a guide rod 5, and the nut 403 is slidably connected to the guide rod 5. The nut 403 has a sliding opening that matches the guide rod 5.

[0039] In practice, the guide rod 5 can limit and guide the sliding of the nut 403, preventing the nut 403 from rotating along with the rotation of the bidirectional lead screw 402.

[0040] refer to Figure 1 Mounting plates 9 are connected to both sides of mounting base 401. Fastening screws 7 are threaded onto mounting plates 9. Guide grooves 6 are provided on rotating plate 2. One end of fastening screw 7 extends into guide groove 6.

[0041] In practice, a rotatable mounting base 401 is provided to facilitate radial adjustment at any angle. The guide groove 6 on the rotating plate 2 facilitates rotation guidance. The threaded fastening screws 7 on the mounting plate 9 are used to quickly tighten and fix the mounting base 401 after it has been adjusted to a certain angle.

[0042] refer to Figure 1 The rotating plate 2 is connected to two symmetrical diagonal clamping handles 8, and the diagonal clamping handles 8 are chamfered.

[0043] In practice, the diagonal clamping handle 8 is designed to make it easier for users to pick up the rotating plate 2. The chamfer not only improves the aesthetics of the diagonal clamping handle 8, but also makes it less likely to be scratched when picking up the diagonal clamping handle 8.

[0044] refer to Figure 2 One end of the bidirectional lead screw 402 extends to the outside of the mounting base 401 and is connected to a knob, which is fitted with an anti-slip sleeve.

[0045] In practice, the knob is designed to allow users to apply force to rotate the bidirectional lead screw 402.

[0046] Working principle: First, the two sliding vertical plate adjustment blocks 301 are suitable for clamping chips of different sizes. Then, the chip is placed on the positioning pin 303. At this time, the reset spring 304 can drive the positioning pin 303 to slide vertically and cooperate with the pin seat 302 to clamp and fix the chip. This setting can automatically adjust the clamping force according to the chip size to ensure stable clamping and no damage to the chip surface. In addition, the contact area between the positioning pin 303 and the pin seat 302 and the chip is designed to limit the contact area, further reducing the damage to the chip during the clamping process.

[0047] The rotatable mounting base 401 facilitates radial adjustment at any angle. The guide groove 6 on the rotating plate 2 guides the rotation. The threaded fastening screws 7 on the mounting plate 9 are used to quickly tighten and fix the mounting base 401 after it has been adjusted to a certain angle.

Claims

1. A chip unpacking fixture, comprising a fixture base plate (1) and a rotating plate (2) inserted into the fixture base plate (1), wherein the axes of the fixture base plate (1) and the rotating plate (2) coincide, characterized in that, include, At least two vertical plate adjusting blocks (301) are slidably arranged above the rotating plate (2) and symmetrically arranged about the axis of the rotating plate (2). At least two pressure needle seats (302) are connected to the top of the vertical plate adjusting block (301); Positioning pins (303) are slidably mounted on the vertical plate adjusting block (301), and their number and position correspond to the pin holder (302). They are used in conjunction with the pin holder (302) to clamp the chip. The reset spring (304) is connected at one end to the upright plate adjusting block (301) and at the other end to the positioning pressure pin (303). The rotating plate (2) is provided with a driving assembly for driving the upright plate adjusting block (301) to slide.

2. The chip unpacking fixture as described in claim 1, characterized in that: A positioning pin (305) is inserted into the upright plate adjusting block (301), and one end of the positioning pin (305) extends into the upright plate adjusting block (301) to limit the positioning pressure pin (303).

3. The chip unpacking fixture as described in claim 2, characterized in that: The vertical plate adjusting block (301) has a slot that matches the positioning pin (305).

4. The chip unpacking fixture as described in claim 1, characterized in that: The drive assembly includes a mounting base (401) rotatably connected to the rotating plate (2), a bidirectional lead screw (402) rotatably connected inside the mounting base (401), and two symmetrical nuts (403) threaded onto the bidirectional lead screw (402). The top of the nuts (403) extends to the outside of the mounting base (401) and is connected to the bottom of the vertical plate adjusting block (301).

5. The chip unpacking fixture as described in claim 4, characterized in that: The mounting base (401) is connected to a guide rod (5), and the nut (403) is slidably connected to the guide rod (5). The nut (403) has a sliding opening that is compatible with the guide rod (5).

6. The chip unpacking fixture as described in claim 4, characterized in that: Mounting plates (9) are connected to both sides of the mounting base (401). Fastening screws (7) are threaded onto the mounting plates (9). A guide groove (6) is provided on the rotating plate (2). One end of the fastening screw (7) extends into the guide groove (6).

7. The chip unpacking fixture as described in claim 1, characterized in that: The rotating plate (2) is connected to two symmetrical diagonal clamping handles (8), and the diagonal clamping handles (8) are chamfered.

8. The chip unpacking fixture as described in claim 4, characterized in that: One end of the bidirectional lead screw (402) extends to the outside of the mounting base (401) and is connected to a knob, which is fitted with an anti-slip sleeve.

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