Aluminum wire welding chopper
By designing a V-shaped welding groove and a rounded chamfer on the aluminum wire welding wedge, the problems of high processing difficulty and difficulty in controlling precision of traditional aluminum wire welding wedges are solved, and high-quality and efficient aluminum wire welding is achieved.
Patent Information
- Application Number
- CN202423213126.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-25
- Publication Date
- 2025-12-02
- Estimated Expiration
- 2034-12-25
AI Technical Summary
In the production process of traditional aluminum wire welding cutters, the square inner groove is difficult to process and the processing accuracy is not easy to control, resulting in low aluminum wire welding quality and welding efficiency.
A welding cutter for aluminum wire is designed, which features a V-shaped welding groove on the tip with a rounded chamfer on the groove wall. The outer edge of the tip has first and second conical surfaces, and the placement holes include first and second micro-holes. This design accommodates aluminum wires of different diameters, simplifies processing, and improves precision.
By simplifying the processing difficulty and improving precision, the cost of precision machining is reduced, thereby improving the welding quality and efficiency of aluminum wire welding.
Smart Images
Figure CN223617003U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of microelectronics technology, and in particular to an aluminum wire welding cutter. Background Technology
[0002] An aluminum wire welding wedge is a tool specifically designed for aluminum wire welding. Its main function is to precisely guide the aluminum wire to the welding position and ensure good contact between the wire and the welding surface, thereby achieving a high-quality weld. It is widely used in semiconductor packaging, integrated circuit manufacturing, and other fields requiring precision welding.
[0003] The aluminum wire bonding cutter is mounted on the bonding machine, which bonds aluminum wire to the metal pins on the chip surface. In related technologies, the aluminum wire bonding cutter needs to have a front angle and a rear foot on the tip, and a square inner groove needs to be opened at the end of the tip. The square inner groove is set as a flared mouth with an inclination angle of 45°.
[0004] In the production process of the aforementioned traditional aluminum wire welding cutter, the square inner groove is difficult to process and the processing accuracy is not easy to control. Using aluminum wire welding cutters with poor processing accuracy to weld aluminum wire results in low aluminum wire welding quality and welding efficiency. Summary of the Invention
[0005] To address the challenges of machining the square inner groove in traditional aluminum wire welding cutters during production, which is difficult and requires precise control, resulting in low welding quality and efficiency, this application provides an aluminum wire welding cutter with the following technical solution: It includes a cutter body, one end of which has a cutting tip. A placement hole is formed on the cutter body, and a welding groove is formed at the end of the cutting tip away from the cutter body. The welding groove communicates with the placement hole and is a V-shaped groove.
[0006] In one specific implementation, the blade tip is provided with an inclined observation surface, and the placement hole penetrates the inclined observation surface.
[0007] In one specific implementation, the wall of the welding groove is provided with a rounded chamfer.
[0008] In one specific implementation, the outer edge of the blade tip is provided with a first conical surface, and the conical angle of the first conical surface is in the range of 18 to 22°.
[0009] In one specific implementation, a second conical surface is provided at the end of the first conical surface away from the cutter body, and the conical angle of the second conical surface is in the range of 38 to 42°.
[0010] In one specific implementation, the end of the blade away from the blade tip is provided with a mounting rod, and the diameter of the blade is larger than the diameter of the mounting rod.
[0011] In one specific implementation, the diameter of the blade body is 2-3 mm, and the diameter of the mounting rod is 1.585 mm.
[0012] In one specific implementation, the outer edge of the mounting rod is provided with a mounting flat.
[0013] In one specific implementation, the placement hole includes a first micro-hole and a second micro-hole communicating with the first micro-hole. The first micro-hole is disposed on the blade body, and the second micro-hole is disposed at the end of the blade tip away from the blade body. The diameter of the first micro-hole is larger than the diameter of the second micro-hole.
[0014] In one specific implementation, the diameter of the first micropore is 0.40–0.50 mm, and the diameter of the second micropore is in the range of 0.10–0.14 mm.
[0015] In summary, this application has at least the following beneficial technical effects: the aluminum wire is threaded through the placement hole, the tip of the blade serves as the welding working surface, the aluminum wire is supported in the welding groove, and then the bonding machine is started to bond the aluminum wire to form a weld point. This application, by opening a welding groove at the tip of the blade, makes the machining of the welding groove far less difficult than opening a square inner groove at the top of a traditional aluminum wire welding cutter. Machining is simpler, and the machining accuracy of the welding groove is easier to control, saving precision machining costs while improving the welding quality and efficiency of the aluminum wire. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.
[0017] Figure 2 yes Figure 1 Enlarged diagram of point A in the middle.
[0018] Figure 3 This is a cross-sectional schematic diagram used to illustrate the first micropore in the embodiments of this application.
[0019] Reference numerals: 1. Blade body; 2. Blade tip; 3. Welding groove; 4. Inclined observation surface; 5. Rounded chamfer; 6. First conical surface; 7. Second conical surface; 8. Mounting rod; 9. Mounting flat; 10. First micro-hole; 11. Second micro-hole. Detailed Implementation
[0020] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.
[0021] This application discloses an aluminum wire welding cutter.
[0022] Reference Figure 1 and Figure 2The aluminum wire welding cutter includes a cutter body 1, with a cutter tip 2 fixedly connected to one end of the cutter body 1. A placement hole is formed on the cutter body 1, and a welding groove 3 is formed on the end of the cutter tip 2 facing away from the cutter body 1. The welding groove 3 is a V-shaped groove and communicates with the placement hole. By adding the V-shaped welding groove 3 to the cutter tip 2, a near-V-shape matching the shape of the welding groove 3 will be formed during the welding process of aluminum wires thicker than 50µm, thereby enhancing the welding strength. The wall of the welding groove 3 is provided with a rounded chamfer 5. This rounded chamfer 5 removes sharp edges from the groove wall and disperses stress on the wall of the welding groove 3, reducing stress concentration and thus improving the overall structural strength of the welding groove 3. Therefore, the aluminum wire passes through the placement hole, the end of the cutter tip 2 serves as the welding working surface, the aluminum wire is supported in the welding groove 3, and the welding groove 13 acts as a limiting force on the aluminum wire. Then, a bonding machine is started to bond the aluminum wire to form a weld point. The size of the weld point is determined by the thickness between the outer circle of the cutter tip 2 and the placement hole.
[0023] Reference Figure 1 and Figure 2 The cutting tip 2 is provided with an inclined observation surface 4, through which a placement hole penetrates. The inclined observation surface 4 exposes the end of the aluminum wire, facilitating the operator's observation of the wire's transmission and positioning, thereby improving welding quality. The angle of the inclined observation surface 4 can be adjusted according to the actual on-site processing conditions, thus helping to avoid gaps in the cutting tip 2 and facilitating deep cavity welding.
[0024] Reference Figure 1 and Figure 2 The blade body 1 has a mounting rod 8 fixedly connected to one end away from the blade tip 2. The diameter of the blade body 1 is larger than the diameter of the mounting rod 8. The outer edge of the mounting rod 8 is provided with a mounting flat 9, which facilitates the operator to install the mounting rod 8 onto a standard bonding machine more conveniently. In order to be compatible with the models of standard bonding machines on the market, the diameter of the mounting rod 8 is set to 1 / 16 inch, or 1.585 mm. Since this application needs to be compatible with aluminum wires with diameters from 18 μm to 150 μm, when the diameter of the aluminum wire reaches or exceeds 80 μm, there are higher requirements for the structural strength of the aluminum wire welding wedge blade body 1. Therefore, the diameter of the blade body 1 is 2 to 3 mm. In this embodiment, 2 mm is specifically used to enhance the overall structural rigidity of the blade body 1.
[0025] Reference Figure 2 and Figure 3The outer edge of the blade tip 2 is provided with a first conical surface 6, the cone angle of which ranges from 18 to 22°. In this embodiment, the cone angle of the first conical surface 6 is specifically 20°. A second conical surface 7 is provided at the end of the first conical surface 6 away from the blade body 1, the cone angle of the second conical surface 7 ranges from 38 to 42°. In this embodiment, the cone angle of the second conical surface 7 is specifically 40°. By setting the blade tip 2 with the first conical surface 6 and the second conical surface 7, the structural strength of the blade tip 2 is ensured, while facilitating welding of aluminum wire welding cutters in confined spaces.
[0026] Reference Figure 2 and Figure 3 The placement hole includes a first micro-hole 10 and a second micro-hole 11 communicating with the first micro-hole 10. The second micro-hole 11 is located at the end of the blade tip 2 away from the blade body 1. The diameter of the first micro-hole 10 is larger than the diameter of the second micro-hole 11. The diameter of the first micro-hole 10 is 0.40-0.50 mm, and the diameter of the second micro-hole 11 is 0.10-0.14 mm. In this embodiment, the diameter of the first micro-hole 10 is 0.45 mm, and the diameter of the second micro-hole 11 is 0.12 mm. The placement hole serves to limit and guide the aluminum wire inside the blade body 1, reducing the possibility of the aluminum wire's position shift and facilitating the aluminum wire to pass through the blade body 1 and partially extend out of the blade tip 2. By setting the second micro-hole 11 on the blade tip 2, small holes with diameters ranging from 30 μm to 250 μm can be made. The machining difficulty of opening the hole is much less than that of making a square inner groove with a 45° angled flared opening, making machining easier.
[0027] The implementation principle of this application embodiment is as follows: the aluminum wire is threaded through the placement hole, the end of the blade tip 2 serves as the welding working surface, the aluminum wire is supported in the welding groove 3, and then the bonding machine is started to bond the aluminum wire to form a weld point. By opening the welding groove 3 at the end of the blade tip 2, the processing difficulty of the welding groove 3 is far less than that of opening a square inner groove at the top of the traditional aluminum wire welding cutter, making the processing simpler and the processing accuracy of the welding groove 3 easier to control. This saves precision machining costs while improving the welding quality and efficiency of aluminum wire welding.
[0028] This specific embodiment is merely an explanation of the present invention and is not intended to limit the invention. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.
Claims
1. An aluminum wire welding wedge, characterized in that: It includes a blade body (1), one end of which is provided with a blade tip (2), and a placement hole is provided on the blade body (1). A welding groove (3) is provided on the end of the blade tip (2) away from the blade body (1). The welding groove (3) communicates with the placement hole and is a V-shaped groove.
2. The aluminum wire welding wedge according to claim 1, characterized in that: The blade tip (2) is provided with an inclined observation surface (4), and the placement hole penetrates the inclined observation surface (4).
3. The aluminum wire welding wedge according to claim 1, characterized in that: The welding groove (3) has a rounded chamfer (5) on its groove wall.
4. The aluminum wire welding wedge according to claim 1, characterized in that: The outer edge of the blade tip (2) is provided with a first conical surface (6), and the conical angle of the first conical surface (6) is in the range of 18 to 22°.
5. The aluminum wire welding wedge according to claim 4, characterized in that: The first conical surface (6) has a second conical surface (7) at the end opposite to the cutter body (1), and the conical angle of the second conical surface (7) is in the range of 38 to 42°.
6. The aluminum wire welding wedge according to claim 1, characterized in that: The blade body (1) is provided with a mounting rod (8) at one end away from the blade tip (2), and the diameter of the blade body (1) is larger than the diameter of the mounting rod (8).
7. The aluminum wire welding wedge according to claim 6, characterized in that: The diameter of the blade (1) is 2-3 mm, and the diameter of the mounting rod (8) is 1.585 mm.
8. The aluminum wire welding wedge according to claim 6, characterized in that: The outer edge of the mounting rod (8) is provided with a mounting flat (9).
9. The aluminum wire welding wedge according to claim 1, characterized in that: The placement hole includes a first microhole (10) and a second microhole (11) communicating with the first microhole (10). The first microhole (10) is disposed on the blade body (1), and the second microhole (11) is disposed at the end of the blade tip (2) away from the blade body (1). The diameter of the first microhole (10) is larger than the diameter of the second microhole (11).
10. The aluminum wire welding wedge according to claim 9, characterized in that: The diameter of the first micropore (10) is 0.40 to 0.50 mm, and the diameter of the second micropore (11) is 0.10 to 0.14 mm.