Tool structure for rapidly cutting Clip unit

Abstract

The utility model discloses a tool structure for rapidly cutting a Clip unit, which relates to the technical field of strip bonding equipment and comprises a lower cutter positioning block, a mounting hole is formed in the lower cutter positioning block, a lower cutter is mounted in the mounting hole, and a positioning pin for positioning a copper strip is arranged on the lower cutter positioning block; and the upper cutter is matched with the lower cutter. According to the utility model, the solid copper bridge can be quickly cut from a copper strip after being punched and formed, and the solid copper bridge cannot deform in the cutting process, so that the subsequent measurement result of the solid copper bridge is more accurate.

Description

A tooling structure for rapid cutting of Clip units Technical Field

[0001] This utility model relates to the technical field of strip bonding equipment, and more specifically, to a tooling structure for rapidly cutting Clip units. Background Technology

[0002] The Clip process is primarily used in the packaging stage of chip manufacturing. Packaging is the final step in chip manufacturing, and its purpose is to connect the chip to external circuitry and protect the chip from external environmental influences.

[0003] In traditional packaging, electrical connections between chips are typically achieved using wire bonding, which connects the chip's pads to external pins via thin metal wires (such as aluminum or gold wires). However, with increasing chip power and performance requirements, traditional wire bonding has gradually revealed some problems, such as high high-frequency parasitic parameters and insufficient heat dissipation.

[0004] To address these issues, Cu Clip technology emerged. The Cu Clip process uses a solid copper bridge (clip) to connect the chip to the pins. During the production of the solid copper bridge, its quality needs to be inspected. Currently, solid copper bridges are mainly produced by stamping copper strips. After stamping, the solid copper bridge is retained on the copper strip by connecting ribs, as shown in Figures 1 and 2, and then supplied to packaging and testing manufacturers in a wound manner. However, regardless of how the stamped copper strip is supplied to the packaging and testing manufacturers, the dimensions of the solid copper bridge need to be randomly inspected after stamping. Currently, the inspection method involves cutting the solid copper bridge directly from the copper strip with scissors and then measuring it with tools. This method is not only slow, but the solid copper bridge is also prone to deformation during the cutting process, leading to inaccurate measurement results. Therefore, there is an urgent need for a tooling structure for quickly cutting Clip units that is simple and convenient to cut and does not easily deform the solid copper bridge during cutting. Summary of the Invention

[0005] The purpose of this invention is to provide a tooling structure for quickly cutting Clip units, which not only enables the solid copper bridge to be quickly cut from the copper strip after stamping, but also prevents the solid copper bridge from deforming during the cutting process, making the subsequent measurement results of the solid copper bridge more accurate.

[0006] To achieve the purpose of this utility model, the technical solution adopted is as follows: a tooling structure for quick cutting of Clip units, including a lower blade positioning block, a mounting hole on the lower blade positioning block, a lower blade installed in the mounting hole, and a positioning pin with a positioning copper strip on the lower blade positioning block; and an upper blade adapted to the lower blade.

[0007] Furthermore, the lower blade positioning block is also provided with a bolt hole located outside the mounting hole, and a clamping bolt is installed in the bolt hole, with the head of the clamping bolt pressing against the lower blade.

[0008] Furthermore, there are multiple mounting holes and bolt holes, with the multiple mounting holes arranged at intervals along the length of the lower cutting tool positioning block, and the multiple bolt holes corresponding one-to-one with the multiple mounting holes.

[0009] Furthermore, a magnet is also embedded in the lower blade positioning block.

[0010] Furthermore, there are two positioning pins, which are respectively located near the two ends of the lower cutting positioning block.

[0011] Furthermore, the cutting surface of the upper blade is U-shaped.

[0012] Furthermore, it also includes a lower blade pad for mounting the lower blade positioning block, and the lower blade pad has a material discharge hole adapted to the lower blade.

[0013] The beneficial effects of this utility model are:

[0014] In this invention, by setting a lower cutter positioning block and installing the lower cutter on the lower cutter positioning block, the lower cutter and the upper cutter cooperate to quickly cut the stamped solid copper bridge from the copper strip, so that the solid copper bridge will not be deformed during the cutting process, and the subsequent measurement results of the solid copper bridge are more accurate.

[0015] In addition, this utility model can be adapted to solid copper bridges of different sizes by replacing the corresponding lower and upper blades, thereby satisfying the punching needs of different sizes and making it more widely applicable. Attached Figure Description

[0016] The accompanying drawings illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the principles of the present invention. These drawings are included to provide a further understanding of the present invention and are incorporated in and constitute a part of this specification.

[0017] Figure 1 is a structural diagram of the copper strip after the fixed copper bridge is stamped;

[0018] Figure 2 is a structural diagram of the fixed copper bridge;

[0019] Figure 3 is a front view of the tooling structure for the quick-cut Clip unit;

[0020] Figure 4 is a side view of the tooling structure for the quick-cut Clip unit;

[0021] Figure 5 is a structural diagram of the lower tool positioning block;

[0022] Figure 6 is a structural diagram of the lower blade pad;

[0023] Figure 7 is a structural diagram of the cutting tool;

[0024] Figure 8 is a structural diagram of the upper blade;

[0025] Figure 9 is a partial view of the cutting edge of the upper knife.

[0026] The attached diagram shows the markings and corresponding component names:

[0027] 1. Lower cutter positioning block; 2. Lower cutter pad block; 3. Lower cutter; 4. Upper cutter.

[0028] 11. Mounting hole; 12. Bolt hole; 13. Clamping bolt; 14. Magnet; 15. Positioning pin;

[0029] 21. Material discharge hole;

[0030] 41. Concave surface; 42. Chamfer A. Detailed Implementation

[0031] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be noted that, for ease of description, only the parts relevant to the present invention are shown in the accompanying drawings.

[0032] It should be noted that, where there is no conflict, the embodiments and features described in these embodiments can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0033] As shown in Figures 2 to 9, the tooling structure for a quick-cutting Clip unit provided by this utility model includes a lower blade positioning block 1. The lower blade positioning block 1 has a rectangular mounting hole 11. A lower blade 3 is installed in the mounting hole 11, with a clearance fit between the lower blade 3 and the mounting hole 11, facilitating the installation or removal of the lower blade 3. The lower blade 3 remains fixed after being installed in the mounting hole 11, preventing it from falling off the lower blade positioning block 1 during use. The cutting edge shape of the lower blade 3 is adapted to the projected shape of the solid copper bridge, or the cutting edge of the lower blade 3 is rectangular, and the cutting edge size of the lower blade 3 is larger than the projected size of the solid copper bridge. This utility model also includes an upper blade 4 adapted to the lower blade 3. The cutting edge of the upper blade 4 is adapted to the cutting edge of the lower blade 3. To prevent the upper blade 4 from causing compression deformation to the solid copper bridge during the punching process, as shown in Figure 9, the cutting surface of the lower blade 3 has a concave surface 41 to avoid the solid copper bridge.

[0034] Since the copper strip moves forward in a stepping manner during the production process of the solid copper bridge, in order to ensure more accurate punching of the solid copper bridge, a positioning pin 15 is also installed on the lower blade positioning block 1. The positioning pin 15 extends upward through the punching surface of the upper blade 4. The positioning pin 15 is adapted to the positioning hole on the copper strip, so that the solid copper bridge can be positioned during the punching process, making the punching of the solid copper bridge more accurate.

[0035] To ensure the lower blade 3 remains stable after being installed in the mounting hole 11, as shown in Figures 4 and 5, a bolt hole 12 is also provided on the lower blade positioning block 1. The bolt hole 12 is located outside the mounting hole 11, and a clamping bolt 13 is installed in the bolt hole 12. Part of the head of the clamping bolt 13 is located above the mounting hole 11. After the lower blade 3 is installed in the mounting hole 11, the clamping bolt 13 is tightened, and the head of the clamping bolt 13 presses against the lower blade 3, thereby fixing the lower blade 3 in the mounting hole 11, making the installation and removal of the lower blade 3 more convenient. Since the punching of the fixed copper bridge in this utility model is mainly achieved through the cooperation of the upper blade 4 and the lower blade 3, the upper die assembly used to install the upper blade 4 does not fit against the lower blade positioning block 1 during the punching process of the fixed copper bridge. Therefore, the clamping bolt 13 will not affect the punching of the fixed copper bridge.

[0036] In this invention, to meet the punching requirements of fixed copper bridges of different sizes, as shown in Figure 5, the mounting holes 11 on the lower blade positioning block 1 can be multiple. These mounting holes 11 are evenly spaced along the feeding direction of the copper strip. Corresponding lower blades 3 can be installed in each mounting hole 11. Each lower blade 3 has a different cutting edge size. Each lower blade 3 corresponds to an upper blade 4. When punching a fixed copper bridge of a corresponding size is required, the upper blade 4 and lower blade 3 with the corresponding cutting edge size are selected. The upper blades 4 with other cutting edge sizes can then be removed. Since multiple lower blades 3 can be installed on the lower blade positioning block 1, each mounting hole 11 has a bolt hole 12 on its outer side to ensure the fixation of each lower blade 3. After the lower blade 3 is installed in the corresponding mounting hole 11, the clamping bolt 13 is tightened into the corresponding bolt hole 12, so that the head of the clamping bolt 13 presses against the lower blade 3, making the installation and removal of each lower blade 3 more convenient.

[0037] To prevent the removed upper blade 4 from falling off due to careless placement, as shown in Figure 4, a magnet 14 can also be embedded in the lower blade positioning block 1. When the upper blade 4 is removed, it can be attracted to the lower blade positioning block 1 by the magnet 14, which can effectively prevent the upper blade 4 from being lost and facilitate the installation and replacement of the upper blade 4.

[0038] In this invention, to improve the positioning effect of the copper strip during the punching process, as shown in Figures 3 and 5, two positioning pins 15 can be used. In this case, the two positioning pins 15 are located near the two ends of the lower cutting positioning block 1, respectively. It should be noted that, based on the forward direction of the copper strip, one positioning pin 15 is located at the front end of the lower cutting positioning block 1, and the other positioning pin 15 is located at the rear end of the lower cutting positioning block 1. To avoid scratching the copper strip, the top of the positioning pin 15 is arc-shaped; simultaneously, to facilitate the insertion of the positioning pin 15 into the positioning hole on the copper strip, the upper end of the positioning pin 15 is a cone with a gradually decreasing diameter.

[0039] To facilitate the installation of the positioning pin 15, as shown in Figures 3, 5, and 6, a through hole for the pin rod of the positioning pin 15 can be made on the lower cutting tool positioning block 1, and a threaded hole corresponding to the through hole can be made on the lower cutting tool pad block 2. The pin rod of the positioning pin 15 is inserted into the through hole, and the pin cap of the positioning pin 15 is located in the threaded hole. Finally, the threaded plug is tightened in the threaded hole, making the installation and removal of the positioning pin 15 more convenient.

[0040] In this utility model, in order to avoid damage to the fixed copper bridge during the cutting of the connecting ribs on the fixed copper bridge by the upper blade 4, as shown in Figure 8, the punching surface of the upper blade 4 is U-shaped. At this time, the protruding part on the punching surface of the upper blade 4 is adapted to the connecting ribs on the fixed copper bridge, so that the upper blade 4 can quickly cut the connecting ribs on the fixed copper bridge when it cooperates with the lower blade 3, effectively avoiding damage to the fixed copper bridge by the upper blade 4.

[0041] In this invention, in order to ensure the upper blade 4 punches the solid copper bridge and to ensure that the upper blade 4 can smoothly enter the lower blade 3, as shown in Figure 9, a chamfer A42 is provided at the cutting edge of the upper blade 4 to ensure that the gap between the upper blade 4 and the lower blade 3 is correct and to avoid blade chipping.

[0042] In this invention, to facilitate the installation of the lower blade positioning block 1, as shown in Figures 3 and 4, a lower blade pad 2 is also provided. The lower blade positioning block 1 is fixed to the lower blade pad 2 by bolts. The lower blade pad 2 also has a blanking hole 21 adapted to the lower blade 3. In this invention, to facilitate the processing of the mounting hole 11, the mounting hole 11 is a through hole on the lower blade positioning block 1. At this time, the size of the blanking hole 21 is smaller than the size of the mounting hole 11. After the lower blade positioning block 1 and the lower blade pad 2 are fixed, the mounting hole 11 forms a stepped hole that is larger at the top and smaller at the bottom. After the lower blade 3 is installed in the mounting hole 11, the lower blade pad 2 supports the lower blade 3.

[0043] The tooling structure of the quick-cutting Clip unit provided by this utility model is mainly for manual use. In use, the lower blade pad 2 is fixed on the worktable, and then the upper blade 4 is manually driven. Of course, if needed, the tooling structure of the quick-cutting Clip unit provided by this utility model can also be clamped on a stamping machine.

[0044] Those skilled in the art should understand that the above embodiments are merely for clearly illustrating the present invention and are not intended to limit the scope of the present invention. Those skilled in the art can make other changes or modifications based on the above disclosure, and these changes or modifications still fall within the scope of the present invention.

Claims

1. A jig structure of a fast clip cutting unit, characterized by, It includes a lower blade positioning block (1), which has a mounting hole (11) and a lower blade (3) installed in the mounting hole (11). The lower blade positioning block (1) has a positioning pin (15) with a positioning copper strip; it also includes an upper blade (4) that is adapted to the lower blade (3).

2. The tooling structure for quick die cutting of clip units as claimed in claim 1 wherein, The lower blade positioning block (1) is also provided with a bolt hole (12) located outside the mounting hole (11). A clamping bolt (13) is installed in the bolt hole (12), and the head of the clamping bolt (13) is pressed against the lower blade (3).

3. The tooling structure for quick die cutting of clip units as claimed in claim 2 wherein, There are multiple mounting holes (11) and bolt holes (12). The multiple mounting holes (11) are arranged at intervals along the length direction of the lower cutting tool positioning block (1), and the multiple bolt holes (12) correspond one-to-one with the multiple mounting holes (11).

4. The tooling structure for quick die cutting of clip units as claimed in claim 1 wherein, A magnet (14) is also embedded in the lower blade positioning block (1).

5. The tooling structure for the rapid cutting Clip unit according to claim 1, characterized in that, There are two positioning pins (15), and the two positioning pins (15) are respectively close to the two ends of the lower cutting positioning block (1).

6. The tooling structure for quick die cutting of clip units of claim 1, wherein, The cutting surface of the upper blade (4) is U-shaped.

7. The tooling structure for quick die cutting of clips as claimed in any one of claims 1 to 6 wherein, It also includes a lower blade pad (2) for mounting the lower blade positioning block (1), and the lower blade pad (2) also has a material dropping hole (21) adapted to the lower blade (3).

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