Transistor cap opening device

Abstract

The utility model discloses a transistor cap opening device, including cap opening blade and cap, cap opening blade fixed mounting is in the top of pivot, and the pivot is installed in the top of support column through bearing, and the support column is vertically fixed in the center of bottom plate, cap is installed on the slider through the pivot, and the slider is installed on the lead screw mechanism, the lateral surface middle part of cap is on the same plane with cap opening blade, one end of lead screw mechanism is installed on the pivot, and the utility model discloses the cap opening of circular transistor, not only has solved the clamping problem of circular transistor, and through the shearing force in the rotation process to the cutting of encapsulation, has reduced the introduction of metal scrap, and cutting force is even, can not damage the component in the tube core.

Description

Technical Field

[0001] This utility model relates to a transistor cap-opening device. Background Technology

[0002] Current transistor packaging still faces the challenge of introducing foreign matter during the manufacturing process. While PIND testing can effectively identify products with foreign matter, its accuracy cannot compare to analysis performed after decapping. However, existing decapping methods often involve significant destructive processes, such as mechanical grinding or using pliers. These methods can damage the bonding wires and the chip, introducing numerous metal debris that severely hinders the process engineers' ability to determine the type of foreign matter. This is especially true for disc-shaped packages, where clamping difficulties arise during decapping. Summary of the Invention

[0003] To solve the above-mentioned technical problems, this utility model provides a transistor cap-opening device.

[0004] This utility model is achieved through the following technical solution.

[0005] This utility model provides a transistor cap-opening device, including a cap-opening blade and a rotating cap; the cap-opening blade is fixedly installed on the top of a rotating shaft, the rotating shaft is installed on the top of a support column through a bearing, and the support column is vertically fixed to the center of a base plate; the rotating cap is installed on a slider through a rotating shaft, the slider is installed on a lead screw mechanism, the middle part of the side of the rotating cap is on the same plane as the cap-opening blade, and one end of the lead screw mechanism is installed on the rotating shaft.

[0006] The lead screw mechanism includes a rotating head and a lead screw seat. The rotating head is installed at the lower end of the rotating shaft, and the rotating head and the lead screw seat are fixedly connected by a slide rail. The slider is movably installed on the slide rail, and the lead screw is movably installed in the lead screw seat. The middle part of the lead screw is threadedly engaged with the slider, and the other end of the lead screw is movably installed in the rotating head.

[0007] The lead screw seat has a square notch, and two planar bearings are installed in the notch. The lead screw is installed in the lead screw seat through the planar bearings. A boss is machined on the lead screw and placed between the two planar bearings. A pressure plate is installed at the opening of the notch to press the two planar bearings and the boss tightly into the notch.

[0008] The lead screw mates with the threaded hole at the center of the slider. Square grooves that mate with the slide rails are machined on both sides of the slider. There are two square slide rails, and the two ends of the two slide rails are connected to the rotating head and the lead screw seat, respectively.

[0009] One end of the lead screw extends out of the lead screw seat and is fitted with a handle.

[0010] The rotating caps are two in number and are installed at both ends of the slider. The centers of the two rotating caps are connected to the center of the opening blade to form an isosceles triangle.

[0011] The distance between the two rotating caps is less than the diameter of the workpiece to be processed.

[0012] The rotating shaft is a square shaft. One end of the rotating shaft that extends out of the support column is machined with a step. The center of both the rotating head and the rotating shaft is machined with a square hole and placed on the step. The top of the rotating shaft is locked with a locking nut.

[0013] The beneficial effects of this utility model are: This invention solves the problem of clamping circular transistors by opening the cap, and also cuts the package by the shearing force during the rotation process, reducing the introduction of metal debris. The cutting force is uniform and will not damage the components inside the die. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model.

[0015] Reference numerals: 1-Base plate, 2-Support column, 3-Opening blade, 4-Rotating shaft, 5-Locking nut, 6-Rotating head, 7-Slide rail, 8-Rotating cap, 9-Slider, 10-Lead screw, 11-Lead screw seat, 12-Boss, 13-Surface bearing, 14-Pressure plate, 15-Locking bolt, 16-Handle. Detailed Implementation

[0016] Example 1: like Figure 1 As shown, a transistor cap-opening device includes a cap-opening blade 3 and a rotating cap 8. The cap-opening blade 3 is fixedly mounted on the top of a rotating shaft 4, which is mounted on the top of a support column 2 via bearings. The support column 2 is vertically fixed to the center of a base plate 1. The rotating cap 8 is mounted on a slider 9 via a rotating shaft, and the slider 9 is mounted on a lead screw mechanism. The middle side of the rotating cap 8 is on the same plane as the cap-opening blade 3, and one end of the lead screw mechanism is mounted on the rotating shaft 4. The support column is used to stabilize the cap opener and connect the rotating shaft and the cap-opening blade. The rotating shaft is a rectangular shaft that rotates on the support column. A retainer is nested on the rotating shaft, and the degree of contact with the cap-opening blade can be adjusted by adjusting the tightness of the screws to fix the product to be capped. The cap-opening blade is located at the top of the device and mainly provides a source of shearing force for the cap-opening process.

[0017] The lead screw mechanism includes a rotating head 6 and a lead screw seat 11. The rotating head 6 is installed at the lower end of the rotating shaft 4. The rotating head 6 and the lead screw seat 11 are fixedly connected by a slide rail 7. The slider 9 is movably installed on the slide rail 7. The lead screw 10 is movably installed in the lead screw seat 11. The middle part of the lead screw 10 is threadedly engaged with the slider 9. The other end of the lead screw 10 is movably installed in the rotating head 6.

[0018] The lead screw seat 11 has a square notch, and two flat bearings 13 are installed in the notch. The lead screw 10 is installed in the lead screw seat 11 through the flat bearings 13. A boss 12 is machined on the lead screw 10 and placed between the two flat bearings 13. A pressure plate 14 is installed at the opening of the notch to press the two flat bearings 13 and the boss 12 tightly into the notch.

[0019] The lead screw 10 engages with the threaded hole in the center of the slider 9. Square grooves that engage with the slide rails 7 are machined on both sides of the slider 9. There are two square slide rails 7, and the two ends of the two slide rails 7 are respectively connected to the rotating head 6 and the lead screw seat 11.

[0020] One end of the lead screw 10 extends out of the lead screw seat 11 and is fitted with a handle 16.

[0021] The rotating caps 8 are two in number and are installed at both ends of the slider 9. The centers of the two rotating caps 8 are connected to the center of the opening blade 3 to form an isosceles triangle.

[0022] The distance between the two rotating caps 8 is less than the diameter of the workpiece to be processed.

[0023] The rotating shaft 4 is a square shaft. One end of the rotating shaft 4 that extends out of the support column 2 is machined with a step. The rotating head 6 and the rotating shaft 4 are both machined with square holes and placed on the step. The top of the rotating shaft 4 is locked with the rotating head 6 and the rotating shaft 4 by the locking nut 5.

[0024] During the capping process, the screw is pushed by rotating the handle to press the workpiece onto the capping edge. During the pressing process, the height of the workpiece cap is adjusted so that the structure of the cap and the workpiece is positioned at the capping edge. After pressing, the handle is pushed to make the workpiece and the capping edge rotate relative to each other. During the rotation, the capping edge applies shearing force to the cap, ultimately achieving low-loss capping.

[0025] The cap-opening device of this invention and the traditional mechanical grinding method were used to open the caps, and the opening results were observed under a microscope. The comparison revealed that the cap-opening device of this patent left no obvious metal debris inside the cavity after opening, while the product opened by mechanical grinding contained a large amount of excess metal. This demonstrates that the new cap-opening device achieves excellent opening results, meeting the requirements of minimal damage and no introduction of additional debris.

Claims

1. A transistor cap-opening device, comprising a cap-opening blade (3) and a rotating cap (8), characterized in that: The opening blade (3) is fixedly installed on the top of the rotating shaft (4), the rotating shaft (4) is installed on the top of the support column (2) through the bearing, and the support column (2) is vertically fixed to the center of the base plate (1); the rotating cap (8) is installed on the slider (9) through the rotating shaft, the slider (9) is installed on the screw mechanism, the middle part of the side of the rotating cap (8) is on the same plane as the opening blade (3), and one end of the screw mechanism is installed on the rotating shaft (4).

2. The transistor cap-opening device according to claim 1, characterized in that: The lead screw mechanism includes a rotating head (6) and a lead screw seat (11). The rotating head (6) is installed at the lower end of the rotating shaft (4). The rotating head (6) and the lead screw seat (11) are fixedly connected by a slide rail (7). The slider (9) is movably installed on the slide rail (7). The lead screw (10) is movably installed in the lead screw seat (11). The middle part of the lead screw (10) is threadedly connected to the slider (9). The other end of the lead screw (10) is movably installed in the rotating head (6).

3. The transistor cap-opening device according to claim 2, characterized in that: The lead screw seat (11) has a square notch, and two plane bearings (13) are installed in the notch. The lead screw (10) is installed in the lead screw seat (11) through the plane bearings (13). The lead screw (10) has a boss (12) which is placed between the two plane bearings (13). A pressure plate (14) is installed at the opening of the notch to press the two plane bearings (13) and the boss (12) tightly in the notch.

4. The transistor cap-opening device according to claim 3, characterized in that: The lead screw (10) is fitted with the threaded hole in the center of the slider (9). The slider (9) has square grooves on both sides that fit with the slide rail (7). There are two slide rails (7) that are square. The two ends of the two slide rails (7) are connected to the rotating head (6) and the lead screw seat (11) respectively.

5. The transistor cap-opening device according to claim 4, characterized in that: One end of the lead screw (10) extends out of the lead screw seat (11) and is fitted with a handle (16).

6. The transistor cap-opening device according to claim 1, characterized in that: The rotating caps (8) are two in number and are installed at both ends of the slider (9). The centers of the two rotating caps (8) are connected to the center of the opening blade (3) to form an isosceles triangle.

7. The transistor cap-opening device according to claim 5, characterized in that: The distance between the two rotating caps (8) is less than the diameter of the workpiece to be processed.

8. The transistor cap-opening device according to claim 1, characterized in that: The rotating shaft (4) is a square shaft. The end of the rotating shaft (4) extending out of the support column (2) is machined with a step. The center of the rotating head (6) and the rotating shaft (4) are both machined with square holes and placed on the step. The top of the rotating shaft (4) is locked with the rotating head (6) and the rotating shaft (4) by the locking nut (5).

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