Chip wire bonding spool clamp
Patent Information
- Application Number
- CN202522127029.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-09
- Publication Date
- 2026-08-21
- Estimated Expiration
- 2035-10-09
AI Technical Summary
[0004]本实用新型的目的是提供一种芯片引线键合的线轴夹持装置，有效解决了线轴安装、拆卸复杂的技术问题
[0019]本实用新型公开了一种芯片引线键合的线轴夹持装置，包括连接座和夹持支架，连接座用于与引线键合机的线轴转动轴连接，夹持支架用于夹持线轴，夹持支架与连接座固定连接；夹持支架包括夹持叶片，夹持叶片设有多个，多个夹持叶片环绕连接座周向设置；夹持叶片包括依次设置的导向段、夹紧段和线轴放置段，线轴放置段用于放置线轴，夹紧段用于夹紧线轴，导向段用于对线轴导向。通过将夹持叶片设置呈三段式结构，使得线轴很容易在线轴夹持装置上进行安装、拆卸。并且，在夹紧段的作用下，线轴安装到线轴夹持装置上后也不容易松动，提高了安装、拆卸效率，降低了人工成本。
Smart Images
Figure CN224670285U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of chip processing technology, specifically to a spool clamping device for chip wire bonding. Background Technology
[0002] Wire bonding uses metal leads as a bridge to achieve metal-to-metal connection between chip pads and substrate pads through thermo-pressing, ultrasonic waves, or thermo-ultrasonic energy, thus enabling the transmission of electrical signals.
[0003] Currently, installing metal spools into wire bonding machines involves complex installation structures and cumbersome disassembly. When it is necessary to replace the metal spools, a lot of time is required for disassembly and installation, which reduces work efficiency and increases labor costs. Utility Model Content
[0004] The purpose of this invention is to provide a spool clamping device for chip wire bonding, which effectively solves the technical problems of complex spool installation and disassembly.
[0005] To address the aforementioned issues, this utility model discloses a spool clamping device for chip wire bonding, comprising a connecting seat and a clamping bracket. The connecting seat is used to connect to the spool rotation shaft of the wire bonding machine, and the clamping bracket is used to clamp the spool. The clamping bracket is fixedly connected to the connecting seat.
[0006] The clamping bracket includes clamping blades, and multiple clamping blades are provided, with the multiple clamping blades arranged circumferentially around the connecting seat;
[0007] The clamping blade includes a guide section, a clamping section, and a spool placement section arranged in sequence. The spool placement section is used to place the spool, the clamping section is used to clamp the spool, and the guide section is used to guide the spool.
[0008] Optionally, the outer diameter of the guide section formed by the plurality of clamping blades is smaller than the inner diameter of the spool, the outer diameter of the spool placement section formed by the plurality of clamping blades is smaller than the inner diameter of the spool, and the outer diameter of the clamping section formed by the plurality of clamping blades is larger than the inner diameter of the spool.
[0009] Optionally, the difference between the inner diameter of the spool and the outer diameter of the guide section, the difference between the inner diameter of the spool and the outer diameter of the spool placement section, and the difference between the outer diameter of the clamping section and the inner diameter of the spool are all between 0.1 mm and 0.5 mm.
[0010] Optionally, the connection between the spool placement section, the clamping section, and the guide section is a smooth transition. The outer diameter of the guide section, which is formed by the plurality of clamping blades, gradually increases from the end toward the clamping section and reaches its maximum in the clamping section. The outer diameter of the clamping section, which is formed by the plurality of clamping blades, gradually decreases toward the spool placement section and reaches its minimum in the spool placement section. The outer diameter of the spool placement section, which is formed by the plurality of clamping blades, remains unchanged.
[0011] Optionally, the clamping blades have a circumferential arc, and multiple clamping blades have the same arc. The multiple clamping blades surround to form a cylindrical structure, and the axis of the cylindrical structure is collinear with the axis of the connecting seat.
[0012] Optionally, a connecting arm is provided between the connecting seat and the clamping blade, and the two ends of the connecting arm are fixedly connected to the connecting seat and the clamping blade, respectively.
[0013] The connecting arm is fixedly connected to the inner side of the clamping blade. The length of the clamping blade in the axial direction is L. The connecting arm is connected at a position L / 4-L / 2 away from the end where the baffle is set. The connection position of the connecting arm and the connecting seat, and the connection position of the connecting arm and the clamping blade are in the same plane.
[0014] Optionally, the clamping blades are provided in three parts, and the angle between adjacent clamping blades is 120°.
[0015] Optionally, the connecting seat and the clamping bracket are integrally formed, and both the connecting seat and the clamping bracket are made of stainless steel.
[0016] Optionally, the clamping blade is provided with a baffle, which is located at the end of the spool placement section away from the clamping section, and the baffle is provided along the end of the clamping blade.
[0017] Optionally, the connecting seat is a cylindrical structure, the connecting seat is provided with the connecting hole, the side wall of the connecting hole is provided with the fixing hole, the fixing hole is provided with a fixing pin or screw, and the spool rotating shaft is provided with a blind hole that mates with the fixing hole.
[0018] Beneficial effects:
[0019] This utility model discloses a spool clamping device for chip wire bonding, including a connecting base and a clamping bracket. The connecting base is used to connect to the spool rotation shaft of the wire bonding machine, and the clamping bracket is used to clamp the spool. The clamping bracket is fixedly connected to the connecting base. The clamping bracket includes clamping blades, with multiple clamping blades arranged circumferentially around the connecting base. Each clamping blade includes a guide section, a clamping section, and a spool placement section arranged sequentially. The spool placement section is used to place the spool, the clamping section is used to clamp the spool, and the guide section is used to guide the spool. By arranging the clamping blades in a three-section structure, the spool can be easily installed and removed from the spool clamping device. Furthermore, under the action of the clamping section, the spool is not easily loosened after being installed on the spool clamping device, improving installation and removal efficiency and reducing labor costs. Attached Figure Description
[0020] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:
[0021] Figure 1 This is a schematic diagram of the overall structure of the bobbin clamping device disclosed in this utility model.
[0022] Figure 2 This is a schematic diagram of the spool clamping device and the spool assembly disclosed in this utility model.
[0023] Figure 3 This is a schematic diagram of the spool clamping device and the spool cooperating with the spool disclosed in this utility model from another angle.
[0024] Figure 4 This is a schematic diagram of the overall structure of the bobbin clamping device disclosed in this utility model from another angle.
[0025] Explanation of reference numerals in the attached figures:
[0026] 1. Connecting seat; 2. Clamping bracket; 21. Clamping blade; 211. Guide section; 212. Clamping section; 213. Spool placement section; 3. Spool; 4. Connecting arm; 5. Baffle; 6. Connecting hole; 7. Fixing hole. Detailed Implementation
[0027] It should be understood that in the description of this utility model, the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.
[0028] It should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "set," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0029] The technical solution of this utility model will be further illustrated below through specific embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The content of the embodiments does not constitute a limitation on this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0030] like Figures 1-4 As shown, this utility model discloses a spool clamping device for chip wire bonding. The spool clamping device is used to clamp and fix the spool 3 of the metal lead, and to make the spool 3 rotate synchronously with the spool rotation shaft of the wire bonding machine. The spool clamping device includes a connecting seat 1 and a clamping bracket 2. The connecting seat 1 is used to connect to the spool rotation shaft of the wire bonding machine, so that the spool rotation shaft drives the spool clamping device to rotate; the clamping bracket 2 is used to clamp the spool 3, so that the spool clamping device drives the spool 3 to rotate.
[0031] The clamping bracket 2 is fixedly connected to the connecting seat 1. The clamping bracket 2 includes clamping blades 21. Multiple clamping blades 21 are provided. The multiple clamping blades 21 are fixedly connected to the connecting seat 1 respectively. The multiple clamping blades 21 are evenly arranged around the connecting seat 1 in the circumferential direction.
[0032] Specifically, such as Figure 1 or Figure 4 As shown, the clamping blades 21 are divided into three sections along the axial direction, which refers to the axial direction of the cylindrical structure formed by multiple clamping blades 21 arranged in a ring. The three sections are the spool placement section 213, the clamping section 212, and the guide section 211, arranged sequentially with the spool placement section 213 located on the innermost side, the guide section 211 on the outermost side, and the clamping section 212 located between the spool placement section 213 and the guide section 211. The spool placement section 213 is the main part for placing the spool 3. After the spool 3 is inserted into the spool clamping device, the spool 3 is mainly located in the spool placement section 213. The main function of the clamping section 212 is to clamp the spool 3. Part of the spool 3 is located in the clamping section 212. The outer diameter of the clamping section 212 is larger than the inner diameter of the spool 3, so that the clamping section 212 applies outward pressure radially to the spool 3, thereby clamping the spool 3. The function of the guide section 211 is to guide the spool 3, making it easier and faster to insert the spool 3 into the clamping bracket 2.
[0033] The outer diameter of the guide section 211 formed by multiple clamping blades 21 is smaller than the inner diameter of the spool 3. The outer diameter of the spool placement section 213 formed by multiple clamping blades 21 is smaller than the inner diameter of the spool 3. The outer diameter of the clamping section 212 formed by multiple clamping blades 21 is larger than the inner diameter of the spool 3. The difference between these values is between 0.1mm and 0.5mm, and the difference between these values is between 0.1mm and 0.5mm. The specific values can be set according to actual needs.
[0034] Furthermore, the connections between the spool placement section 213, the clamping section 212, and the guide section 211 on the clamping blades 21 are all smoothly transitioned. The outer diameter of the guide section 211, formed by the multiple clamping blades 21 surrounding each other, gradually increases from the end toward the clamping section 212, reaching its maximum at the clamping section 212. Then, the outer diameter of the clamping section 212, formed by the multiple clamping blades 21 surrounding each other, gradually decreases toward the spool placement section 213, reaching its minimum at the spool placement section 213. Finally, the outer diameter of the spool placement section 213, formed by the multiple clamping blades 21 surrounding each other, remains unchanged.
[0035] Specifically, the axial length of the bobbin placement section 213 is less than the axial length of the bobbin 3, while the total axial length of the bobbin placement section 213 and the clamping section 212 is greater than the axial length of the bobbin 3. This results in the bobbin 3 being partially located in the bobbin placement section 213 and partially in the clamping section 212 after being inserted into the bobbin clamping device. This allows the clamping section 212 to apply radially outward pressure to the bobbin 3, thus clamping the bobbin 3 in the bobbin clamping device.
[0036] Preferred, such as Figure 1 As shown, there are three clamping blades 21, which are evenly spaced and the angle between adjacent clamping blades 21 is 120°. Having three clamping blades 21 satisfies the clamping requirement for the spool 3 while reducing processing difficulty and complexity. In other embodiments, the number of clamping blades 21 can also be four, five, or other quantities, depending on actual needs.
[0037] In this application, the connecting seat 1 and the clamping bracket 2 are integrally formed, and can be manufactured by stamping, casting or turning. In this application, both the connecting seat 1 and the clamping bracket 2 are made of stainless steel. Stainless steel can prevent the clamping device from rusting and affecting its service life, and can also ensure that the clamping blade 21 has high elasticity. High elasticity can clamp the spool 3 on the clamping bracket 2.
[0038] Furthermore, the outer diameter of the bobbin placement section 213, clamping section 212 and guide section 211 on the clamping bracket 2 can take any value between 20mm and 100mm. The specific outer diameter can be determined according to actual needs, thereby making the bobbin clamping device suitable for different types of bobbins 3.
[0039] Preferred, such as Figure 3 and Figure 4 As shown, a baffle 5 is provided on the clamping blade 21. The baffle 5 is located at one end of the clamping blade 21, specifically at the end of the spool placement section 213 away from the clamping section 212. The baffle 5 is provided along the end of the clamping blade 21, and the height of the baffle 5 is not specifically limited and can be determined according to actual needs. When the spool 3 is inserted into the clamping bracket 2, the baffle 5 can block the spool 3, preventing the spool 3 from sinking too deeply, and thus playing a role in positioning the spool 3.
[0040] Specifically, such as Figure 1 As shown, the connecting seat 1 is a cylindrical structure. The connecting seat 1 is provided with a connecting hole 6. The side wall of the connecting hole 6 is provided with a fixing hole 7. A fixing pin or screw is provided in the fixing hole 7. The spool rotating shaft is provided with a blind hole that mates with the fixing hole 7, thereby fixing the connecting seat 1 to the spool rotating shaft.
[0041] The side wall of the connecting seat 1 is fixedly connected to the clamping blade 21. Specifically, a connecting arm 4 is provided between the connecting seat 1 and the clamping blade 21, and the two ends of the connecting arm 4 are fixedly connected to the connecting seat 1 and the clamping blade 21 respectively.
[0042] Furthermore, the connecting arm 4 is fixedly connected to the inner side of the clamping blade 21. The axial length of the clamping blade 21 is set to L, and the connecting arm 4 is specifically connected at a position L / 4-L / 2 from the end of the clamping blade 21 relative to the baffle 5. In the radial direction, the connection positions of the connecting arm 4 and the connecting seat 1, and the connection positions of the connecting arm 4 and the clamping blade 21, are in the same plane. This ensures that the connecting seat 1 is also located at a position L / 4-L / 2 from the end of the clamping blade 21 relative to the baffle 5 in the axial direction. This arrangement ensures greater stability of the bobbin clamping device during high-speed rotation and also gives the clamping bracket 2 higher elasticity.
[0043] Preferably, the clamping blades 21 have a circumferential arc, and multiple clamping blades 21 have the same arc. The multiple clamping blades 21 surround to form a cylindrical structure, and the axis of the cylindrical structure is collinear with the axis of the connecting seat 1. This ensures that the bobbin clamping device rotates coaxially during rotation, thus ensuring the stability of the bobbin clamping device in carrying the bobbin 3 during rotation.
[0044] The axial direction referred to in this application refers to the axial direction of the cylindrical structure formed by multiple clamping blades 21, and the radial direction referred to in this application refers to the radial direction of the cylindrical structure formed by multiple clamping blades 21.
[0045] The applicant declares that the above are only specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Those skilled in the art should understand that any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model fall within the protection and disclosure scope of this utility model.
Claims
1. A spool clamping device for chip wire bonding, characterized in that, It includes a connecting seat (1) and a clamping bracket (2). The connecting seat (1) is used to connect to the spool rotation shaft of the wire bonding machine, and the clamping bracket (2) is used to clamp the spool (3). The clamping bracket (2) is fixedly connected to the connecting seat (1). The clamping bracket (2) includes clamping blades (21), and multiple clamping blades (21) are provided, and the multiple clamping blades (21) are arranged circumferentially around the connecting seat (1); The clamping blade (21) includes a guide section (211), a clamping section (212), and a spool placement section (213) arranged in sequence. The spool placement section (213) is used to place the spool (3), the clamping section (212) is used to clamp the spool (3), and the guide section (211) is used to guide the spool (3).
2. The spool clamping device for chip wire bonding according to claim 1, characterized in that, The outer diameter of the guide section (211) formed by the plurality of clamping blades (21) is smaller than the inner diameter of the spool (3), the outer diameter of the spool placement section (213) formed by the plurality of clamping blades (21) is smaller than the inner diameter of the spool (3), and the outer diameter of the clamping section (212) formed by the plurality of clamping blades (21) is larger than the inner diameter of the spool.
3. The spool clamping device for chip wire bonding according to claim 2, characterized in that, The difference between the inner diameter of the spool (3) and the outer diameter of the guide section (211), the difference between the inner diameter of the spool (3) and the outer diameter of the spool placement section (213), and the difference between the outer diameter of the clamping section (212) and the inner diameter of the spool (3) are all between 0.1 mm and 0.5 mm.
4. The spool clamping device for chip wire bonding according to claim 2, characterized in that, The connection between the spool placement section (213), the clamping section (212), and the guide section (211) is a smooth transition. The outer diameter of the guide section (211) formed by the plurality of clamping blades (21) gradually increases from the end toward the clamping section (212) and reaches its maximum at the clamping section (212). The outer diameter of the clamping section (212) formed by the plurality of clamping blades (21) gradually decreases toward the spool placement section (213) and reaches its minimum at the spool placement section (213). The outer diameter of the spool placement section (213) formed by the plurality of clamping blades (21) remains unchanged.
5. The spool clamping device for chip wire bonding according to claim 1, characterized in that, The clamping blade (21) has an arc along the circumference, and the multiple clamping blades (21) have the same arc. The multiple clamping blades (21) surround to form a cylindrical structure, and the axis of the cylindrical structure is collinear with the axis of the connecting seat (1).
6. The spool clamping device for chip wire bonding according to claim 1, characterized in that, The clamping blade (21) is provided with a baffle (5), which is located at one end of the bobbin placement section (213) away from the clamping section (212), and the baffle (5) is provided along the end of the clamping blade (21).
7. The spool clamping device for chip wire bonding according to claim 6, characterized in that, A connecting arm (4) is provided between the connecting seat (1) and the clamping blade (21), and the two ends of the connecting arm (4) are fixedly connected to the connecting seat (1) and the clamping blade (21) respectively. The connecting arm (4) is fixedly connected to the inner side of the clamping blade (21). The length of the clamping blade (21) along the axial direction is L. The connecting arm (4) is connected to the clamping blade (21) at a position L / 4-L / 2 away from the end where the baffle (5) is set. The connection position of the connecting arm (4) and the connecting seat (1) and the connection position of the connecting arm (4) and the clamping blade (21) are in the same plane.
8. The spool clamping device for chip wire bonding according to claim 1, characterized in that, The clamping blades (21) are provided in three parts, and the angle between adjacent clamping blades (21) is 120°.
9. The spool clamping device for chip wire bonding according to claim 1, characterized in that, The connecting seat (1) and the clamping bracket (2) are integrally formed, and both the connecting seat (1) and the clamping bracket (2) are made of stainless steel.
10. A spool clamping device for chip wire bonding according to claim 1, characterized in that, The connecting seat (1) is a cylindrical structure. The connecting seat (1) is provided with a connecting hole (6). The side wall of the connecting hole (6) is provided with a fixing hole (7). A fixing pin or screw is provided in the fixing hole (7). The rotating shaft of the spool is provided with a blind hole that cooperates with the fixing hole (7).