Gold bonding wire cooling and take-up device

Abstract

The utility model discloses a gold bonding wire cooling and take-up device, and relates to the field of gold bonding wire machining. The gold bonding wire winding device comprises a winding wheel and a gold bonding wire, the lower portion of the winding wheel is in transmission connection with a wire arranging frame through an intermittent mechanism, a wire arranging wheel is rotationally installed at the top end of the wire arranging frame, a supporting plate is fixedly connected to one side of the wire arranging frame, and a cooling mechanism is installed on the side, away from the winding wheel, of the top face of the supporting plate. Through cooperative work of the drying mechanism, the electric heater and the fan, hot air is directionally blown to the surface of the gold wire through a groove of the air guide pipe, the air guide pipe is of a flexible pipe fixed shape, and the path can be flexibly adjusted to meet different take-up requirements. By adjusting the passing length of the gold wire in the air guide pipe, the action time of drying hot air can be prolonged or shortened under the condition that the rotating speed of the winding wheel is not changed, so that the drying duration is accurately controlled, and the drying uniformity is improved.

Description

Technical Field

[0001] This utility model relates to the field of bonding wire processing, specifically a bonding wire cooling and take-up device. Background Technology

[0002] Bonding wire is a high-purity gold alloy wire with a gold content of not less than 99.99%. It plays a key role in integrated circuits and semiconductor devices. As a connecting bridge between the chip and the lead frame, it has become an indispensable material in the microelectronics industry due to its excellent electrical, thermal, mechanical properties and chemical stability. Bonding wire is connected to the chip electrodes through ball bonding or wedge bonding technology to ensure stable transmission of electrical signals.

[0003] Traditional bonding wires require cooling with coolant during take-up. However, this presents a problem: after cooling, the bonding wires need to be dried. Traditional drying equipment struggles to effectively control the degree and duration of drying, reducing the ease of take-up. Therefore, the inventors urgently need to design a bonding wire take-up device that can adjust the drying time and degree to improve the production precision of bonding wires. Utility Model Content

[0004] Therefore, the purpose of this utility model is to provide a cooling and take-up device for bonding alloy wires, so as to solve the technical problem that traditional drying devices are difficult to accurately control the degree and duration of drying, which not only reduces the take-up efficiency, but also affects the production accuracy and convenience of bonding alloy wires.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a bonding wire cooling and take-up device, comprising a take-up wheel and a bonding wire, a wire laying frame connected to the lower part of the take-up wheel via an intermittent mechanism, a wire laying wheel rotatably mounted on the top of the wire laying frame, a support plate fixedly connected to one side of the wire laying frame, a cooling mechanism mounted on the top surface of the support plate to the side of the take-up wheel, and a drying mechanism mounted on the support plate;

[0006] The drying mechanism includes a support frame, an electric heater is installed on one side of the support frame, an air duct is connected to one side of the electric heater, a fan is installed on the other side of the electric heater, and a slot is opened on one side of the air duct for the bonding wire to access.

[0007] By adopting the above technical solution, the cooling mechanism and the drying mechanism are integrated on the support plate to form an integrated cooling and drying process. The bonding wire is cooled and dried sequentially during the winding process, which significantly improves the winding efficiency. At the same time, the drying mechanism uses an electric heater and a fan to work together, and guides the hot air precisely to the surface of the wire through the air duct.

[0008] Furthermore, the air duct is a flexible tube, and a flexible tube is adhered and fixed to the air duct to fix the shape of the air duct.

[0009] By adopting the above technical solution, the air duct is made of flexible hose and equipped with a flexible tube to fix its shape, so that the air duct can be bent or extended according to actual needs, flexibly adjust the hot air delivery path, and adapt to complex cable winding scenarios.

[0010] Furthermore, the cooling mechanism includes a mounting bracket, on one side of which a support bracket is mounted, and the key wire is confined in a groove of the support bracket.

[0011] By adopting the above technical solution, the mounting bracket is supported by the mounting frame, allowing the bonding wire to pass evenly in the groove of the bracket. The coolant can fully cover the surface of the wire, avoiding adhesion problems caused by local high temperature.

[0012] Furthermore, a flow pipe is provided above the support bracket, and the flow pipe is provided with a plurality of water outlets, the water outlets being opposite to the grooves on the support bracket.

[0013] By adopting the above technical solution, the outlets evenly distributed on the conveying pipe correspond to the grooves of the support bracket, ensuring that the coolant is accurately sprayed onto the surface of the gold wire, avoiding cooling blind spots, and improving the uniformity of cooling.

[0014] Furthermore, the intermittent mechanism includes a drive shaft, one side of which is geared to a transfer wheel, which is connected to a take-up wheel via a belt.

[0015] By adopting the above technical solution, the gear transmission between the drive shaft and the transfer wheel transmits power to the take-up wheel, realizing synchronous control of take-up and cable laying, and ensuring the stability of the take-up process.

[0016] Furthermore, a worm gear is coaxially mounted on the drive shaft, a turbine is driven to one side of the worm gear, and two sets of transmission gears are driven to the top of the turbine, with intermittent gears fixedly mounted on the two sets of transmission gears.

[0017] By adopting the above technical solution, the worm gear meshes with the turbine, and the intermittent gear is driven to rotate through two sets of transmission gears, so as to realize the precise intermittent movement of the wire guide frame and ensure the stability of the reciprocating movement of the wire guide wheel.

[0018] Furthermore, the lower part of the cable tray is slidably connected to the external support frame via a sliding seat. The sliding seat has a rack on one side, which meshes with two sets of intermittent gears to drive the cable tray and cable wheel to reciprocate.

[0019] By adopting the above technical solution, the wire guide frame is slidably connected to the external support frame through the sliding seat, and with the meshing transmission of the rack and intermittent gear, the linear reciprocating motion of the wire guide frame is realized, ensuring that the gold wires are evenly distributed on the surface of the take-up wheel.

[0020] In summary, the present invention has the following main advantages:

[0021] This invention utilizes a drying mechanism where an electric heater and a fan work together to direct hot air through slots in a duct to the surface of the gold wire. The duct is a flexible tube with a fixed shape, allowing for flexible path adjustment to suit different take-up requirements. By adjusting the length of the gold wire passing through the duct, the duration of the hot air action can be extended or shortened without changing the speed of the take-up wheel, thereby precisely controlling the drying time and improving drying uniformity. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0023] Figure 2 This is a bottom view of the structure of this utility model;

[0024] Figure 3 This is a schematic diagram of the assembly structure of the intermittent mechanism of this utility model;

[0025] Figure 4 This utility model Figure 2 A magnified structural diagram of point A in the middle.

[0026] In the diagram: 1. Rewinding reel; 2. Intermittent mechanism; 201. Drive shaft; 202. Worm gear; 203. Turbine; 204. Transfer wheel; 205. Belt; 206. Transmission gear; 207. Intermittent gear; 208. Sliding seat; 209. Rack; 3. Cable tray; 4. Cable tray wheel; 5. Support plate; 6. Cooling mechanism; 601. Mounting bracket; 602. Support bracket; 603. Inlet pipe; 604. Outlet; 7. Drying mechanism; 701. Support frame; 702. Electric heater; 703. Fan; 704. Air duct; 705. Slotted; 706. Flexible tube; 8. Bonded alloy wire. Detailed Implementation

[0027] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0028] In this embodiment:

[0029] A bonding wire cooling and take-up device, such as Figure 1-4As shown, it includes a winding wheel 1 and a key alloy wire 8. A wire guide frame 3 is connected to the bottom of the winding wheel 1 through an intermittent mechanism 2. A wire guide wheel 4 is rotatably installed on the top of the wire guide frame 3. A support plate 5 is fixedly connected to one side of the wire guide frame 3. A cooling mechanism 6 is installed on the top surface of the support plate 5 to the side of the winding wheel 1. A drying mechanism 7 is installed on the support plate 5.

[0030] The drying mechanism 7 includes a support frame 701. An electric heater 702 is installed on one side of the support frame 701. An air duct 704 is connected to one side of the electric heater 702. A fan 703 is installed on the other side of the electric heater 702. A slot 705 is opened on one side of the air duct 704 for the bonding wire 8 to access. By integrating the cooling mechanism 6 and the drying mechanism 7 on the support plate 5, an integrated cooling and drying process is formed. The bonding wire 8 is cooled and dried sequentially during the winding process, which significantly improves the winding efficiency. At the same time, the drying mechanism 7 uses the electric heater 702 and the fan 703 to work together. The hot air is precisely guided to the surface of the wire through the air duct 704. The slot 705 on its side ensures that the bonding wire 8 can selectively pass through the air duct 704, avoiding local overheating or insufficient drying, and effectively improving the drying uniformity and efficiency. In addition, the flexible characteristics of the air duct 704, combined with the fixed shape of the flexible tube 706, can flexibly adapt to different winding paths, enhancing the versatility of the equipment.

[0031] See Figure 1 , Figure 4 The air duct 704 is a flexible hose, and a flexible tube 706 is adhered and fixed to the air duct to fix its shape. The air duct 704 is made of flexible hose and equipped with a flexible tube 706 to fix its shape, so that the air duct can be bent or extended according to actual needs, flexibly adjusting the hot air delivery path and adapting to complex cable take-up scenarios. At the same time, the adhesion and fixing effect of the flexible tube 706 ensures the stability of the shape of the air duct 704, avoids hot air leakage or path deviation, and ensures the consistency of drying effect. In addition, it reduces the limitation of the equipment on the installation space, making it easy to deploy in narrow or irregular environments and improving the applicability of the equipment.

[0032] See Figure 1 , Figure 4 The cooling mechanism 6 includes a mounting bracket 601, on one side of which a support bracket 602 is mounted. The bonding wire 8 is confined in the groove of the support bracket 602. The mounting bracket 601 supports the support bracket 602, allowing the bonding wire 8 to pass evenly in the groove of the bracket. The coolant can fully cover the surface of the wire, avoiding adhesion problems caused by local high temperature. At the same time, the limiting design of the bracket groove ensures stable transmission of the wire, preventing shaking or deviation, improving the reliability of the cooling process, significantly improving heat exchange efficiency, shortening the cooling time, and thus improving the overall take-up rate.

[0033] See Figure 1 , Figure 4 A flow pipe 603 is provided above the support bracket 602. Several water outlets 604 are provided on the flow pipe 603. The water outlets 604 are opposite to the grooves on the support bracket 602. The water outlets 604 evenly distributed on the flow pipe 603 correspond to the grooves on the support bracket 602, ensuring that the coolant is accurately sprayed onto the surface of the gold wire, avoiding cooling blind spots, and improving the uniformity of cooling. At the same time, the multiple water outlets 604 increase the contact area between the coolant and the gold wire, enhance the heat conduction effect, and further reduce the temperature of the gold wire.

[0034] See Figure 1 , Figure 2 , Figure 3 The intermittent mechanism 2 includes a drive shaft 201. A gear drive on one side of the drive shaft 201 is a transfer wheel 204. The transfer wheel 204 is connected to the take-up wheel 1 via a belt 205. The gear drive between the drive shaft 201 and the transfer wheel 204 transmits power to the take-up wheel 1, realizing synchronous control of winding and wire laying, ensuring the stability of the winding process. At the same time, the transfer wheel 204 is linked to the take-up wheel 1 via the belt 205, which can adjust the wire laying rhythm according to the winding speed, avoiding loosening or breakage of the gold wire due to tension fluctuations. In addition, this transmission structure simplifies the power transmission path, reduces energy loss, and improves the reliability of equipment operation.

[0035] See Figure 1 , Figure 2 , Figure 3 A worm gear 202 is coaxially mounted on the drive shaft 201. A turbine 203 is driven to one side of the worm gear 202. Two sets of transmission gears 206 are driven to the top of the turbine 203. Intermittent gears 207 are fixedly mounted on the two sets of transmission gears 206. The worm gear 202 meshes with the turbine 203, and the two sets of transmission gears 206 drive the intermittent gears 207 to rotate, realizing the precise intermittent movement of the wire laying frame 3 and ensuring the stability of the reciprocating movement of the wire laying wheel 4. At the same time, the intermittent gears 207 are adapted to different winding diameter requirements, improving the uniformity of wire laying. In addition, this mechanism avoids the lag problem of traditional hydraulic or pneumatic drives through rigid transmission of gear meshing, thus improving the accuracy of wire laying.

[0036] See Figure 1 , Figure 2 , Figure 3The lower part of the cable tray 3 is slidably connected to the external support frame via a sliding seat 208. A rack 209 is provided on one side of the sliding seat 208. The rack 209 meshes with two sets of intermittent gears 207 to drive the cable tray 3 and the cable tray wheel 4 to reciprocate. The cable tray 3 is slidably connected to the external support frame via the sliding seat 208. With the meshing transmission of the rack 209 and the intermittent gears 207, the linear reciprocating motion of the cable tray 3 is realized, ensuring that the gold wire is evenly distributed on the surface of the take-up wheel 1. At the same time, the meshing setting of the rack 209 and the intermittent gears 207 has a self-locking function, which can prevent the cable tray 3 from sliding accidentally in the non-drive state and improve the safety of the equipment.

[0037] The implementation principle of this embodiment is as follows: the bonding wire 8 passes through the cooling mechanism 6 and the drying mechanism 7 in sequence, and is wound up by the winding wheel 1. The intermittent mechanism 2 transmits power through the drive shaft 201. The worm 202 on the drive shaft 201 meshes with the turbine 203, driving the two sets of transmission gears 206 and the intermittent gear 207 to rotate. The intermittent gear 207 meshes with the rack 209, pushing the sliding seat 208 to drive the wire laying frame 3 and the wire laying wheel 4 to reciprocate, so as to achieve uniform wire laying.

[0038] During cooling, the support bracket 602 supports and restricts the position of the bonding wire 8, while the outlet 604 of the conveying pipe 603 sprays cooling liquid onto the bonding wire 8 to lower its temperature. Then, the drying stage begins. The electric heater 702 and the fan 703 direct hot air through the slot 705 of the air guide 704 onto the surface of the wire. The air guide 704 is fixed in shape by a flexible tube 706 to adapt to the take-up path, and the length of the bonding wire 8 within the air guide 704 is adjusted. This allows for effective adjustment of the drying time of the bonding wire 8 without changing its winding speed, improving the drying effect and enhancing its adaptability to the winding of the bonding wire 8. The transfer wheel 204 is linked to the take-up wheel 1 via a belt 205 to ensure that the winding speed is synchronized with the drying process. This device, through modular design, achieves integrated and precise control of cooling, drying, and wire arrangement, solving the problem of uncontrollable drying degree and duration in traditional take-up devices, and significantly improving production accuracy and efficiency.

[0039] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A bonding alloy wire cooling and take-up device, characterized in that: Includes a take-up reel (1) and a bonding wire (8). The take-up reel (1) is connected to a wire guide frame (3) via an intermittent mechanism (2) below it. A wire guide wheel (4) is rotatably mounted on the top of the wire guide frame (3). A support plate (5) is fixedly connected to one side of the wire guide frame (3). A cooling mechanism (6) is installed on the top surface of the support plate (5) on one side of the take-up reel (1). A drying mechanism (7) is installed on the support plate (5). The drying mechanism (7) includes a support frame (701), an electric heater (702) is installed on one side of the support frame (701), an air duct (704) is connected to one side of the electric heater (702), a fan (703) is installed on the other side of the electric heater (702), and a slot (705) is opened on one side of the air duct (704) for the bonding wire (8) to access.

2. The bonding wire cooling and take-up device according to claim 1, characterized in that: The air duct (704) is a flexible tube, and a flexible tube (706) is adhered and fixed to the air duct to fix the shape of the air duct (704).

3. The bonding wire cooling and take-up device according to claim 1, characterized in that: The cooling mechanism (6) includes a mounting bracket (601), on one side of which a support bracket (602) is mounted, and a bonding wire (8) is confined in a groove of the support bracket (602).

4. The bonding wire cooling and take-up device according to claim 3, characterized in that: A flow pipe (603) is provided above the support bracket (602), and a plurality of water outlets (604) are provided on the flow pipe (603), with the water outlets (604) being opposite to the grooves on the support bracket (602).

5. The bonding wire cooling and take-up device according to claim 1, characterized in that: The intermittent mechanism (2) includes a drive shaft (201), and a gear drive on one side of the drive shaft (201) is a transfer wheel (204), which is connected to the winding wheel (1) via a belt (205).

6. The bonding wire cooling and take-up device according to claim 5, characterized in that: A worm gear (202) is coaxially mounted on the drive shaft (201). A turbine (203) is driven to one side of the worm gear (202). Two sets of transmission gears (206) are driven to the top of the turbine (203). Intermittent gears (207) are fixedly mounted on the two sets of transmission gears (206).

7. The bonding wire cooling and take-up device according to claim 1, characterized in that: The lower part of the cable tray (3) is slidably connected to the external support frame via a sliding seat (208). The sliding seat (208) has a rack (209) on one side. The rack (209) meshes with two sets of intermittent gears (207) to drive the cable tray (3) and the cable wheel (4) to reciprocate.

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