Wire drawing machine structure of bonding wire

Abstract

The utility model discloses a wire drawing machine structure for bonding wires. Comprising a positioning base plate, a servo motor is arranged on one side of the positioning base plate, an output shaft of the servo motor is in key connection with a transmission wheel, rotating plates are arranged on the two sides of the transmission wheel, pressing wheels are installed at the upper ends of the rotating plates, and a first spring is connected between the lower portions of the two rotating plates. An output shaft of the servo motor is sleeved with a movable sleeve, one side of the movable sleeve is connected with an adjusting plate, the two sides of the adjusting plate are provided with a connecting plate and a shifting wheel respectively, a positioning plate is arranged at the upper end of the middle of the positioning base plate, and a second spring is connected between the positioning plate and the connecting plate. According to the utility model, the bonding wire is conveyed through the transmission wheel, the wrap angle of the bonding wire in contact with the transmission wheel is kept through the pressing wheel, and the tightness of the bonding wire is adjusted through the shifting wheel, so that the stable pulling of the bonding wire is ensured, and the bonding wire is prevented from being broken in the wire drawing process.

Description

Technical Field

[0001] This utility model belongs to the field of bonding wire technology, and in particular relates to a bonding wire drawing machine structure. Background Technology

[0002] Bonding wires, as internal leads used in packaging, are one of the essential raw materials in the packaging and manufacturing process of integrated circuits, discrete semiconductor devices, and LED light sources. As soldering leads between the chip and the substrate, they bear the crucial electrical connection function between the chip and the external environment.

[0003] With the development of packaging technology, the materials of bonding wires have evolved from single materials to a multi-variety product family composed of related composite materials such as gold, silver, copper, and aluminum.

[0004] The production of existing bonding wires requires the use of a wire drawing structure for wire drawing. Wire drawing structures are a common type of metal processing equipment and are widely used in the metal processing industry.

[0005] However, existing technologies have some problems: when using existing wire drawing structures, the bonding wires are prone to breakage due to the need for hard drawing, making it impossible to achieve stable wire drawing and feeding. Therefore, we propose a wire drawing machine structure for bonding wires. Utility Model Content

[0006] To address the problems existing in the prior art, the purpose of this utility model is to provide a wire drawing machine structure for bonding wires. The bonding wires are conveyed by a transmission wheel, and the wrap angle between the bonding wires and the transmission wheel is maintained by a pressing wheel. The tension of the bonding wires is adjusted by a turning wheel, thereby ensuring stable pulling of the bonding wires and preventing breakage of the bonding wires during the drawing process.

[0007] This utility model is implemented as follows: a wire drawing machine structure for bonding wire includes a positioning base plate, a servo motor is fixedly mounted on one side of the positioning base plate, a transmission wheel is keyed to the output shaft of the servo motor, rotating plates are movably connected to the bottom on both sides of the transmission wheel, a pressing wheel is movably mounted on the upper end of the rotating plate, and a first spring is fixedly connected between the lower parts of the two rotating plates.

[0008] A movable sleeve is fitted onto the output shaft of the servo motor. An adjusting plate is fixedly connected to one side of the movable sleeve. A connecting plate is fixedly provided on one side of the adjusting plate. A turn wheel is movably installed on the other side of the adjusting plate. A positioning plate is fixedly provided at the upper middle part of the positioning base plate. A second spring is fixedly connected between the positioning plate and the connecting plate.

[0009] Specifically, one end of the positioning base plate has a through hole, and two U-shaped frames are fixedly provided at both ends of one side of the through hole. A wire drawing plate is movably installed between the two U-shaped frames. The wire drawing plate has several wire drawing holes, and a blade ring is fixedly provided in the middle of the wire drawing holes.

[0010] Specifically, the upper end of the wire drawing plate is provided with a clamping groove, and the middle of the upper U-shaped frame is threaded with a locking bolt, the end of which is movable inside the clamping groove.

[0011] Specifically, the positioning base plate is fixedly provided with a first mounting post on one side of the through hole. The first mounting post has a first sliding groove inside and a first lead screw passing through it. A first moving block is threaded onto the first lead screw, and a support wheel is provided on one side of the first moving block.

[0012] Specifically, the two pressing rollers are respectively disposed on both sides of the transmission roller, and the actuating roller is disposed on the upper end of one of the pressing rollers.

[0013] Specifically, fixing plates are welded to both ends of one side of the positioning base plate.

[0014] Specifically, the bottom ends of the two rotating plates are movably connected to the positioning base plate by pins.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] In use, this utility model uses a servo motor to drive the transmission wheel to rotate, thereby conveying the bonded wire being drawn, reducing the large pulling force caused by the direct winding and pulling process of the winding mechanism. Additionally, pressure rollers are installed on both sides of the transmission wheel via rotating plates. The pressure rollers enable the bonded wire to adhere to the transmission wheel, increasing the contact wrap angle between the bonded wire and the transmission wheel, which facilitates the servo motor to convey the bonded wire through the transmission wheel.

[0017] A movable sleeve is fitted onto the output shaft of the servo motor. A turntable is connected to the adjusting plate through the movable sleeve. The tension of the bonding wire is adjusted by the turntable. The adjusting plate is adaptively adjusted by the second spring, which makes it easy for the turntable to maintain the tension of the bonding wire and prevent the bonding wire from falling off. The transmission wheel, support wheel, pressing wheel and turntable ensure the stable delivery of the bonding wire.

[0018] Furthermore, the wire drawing plate is provided with several wire drawing holes, which facilitates the wire drawing operation of bonding wires of different sizes. The position of the wire drawing plate is adjusted by a U-shaped frame and through holes, and it is locked by locking bolts to maintain the fixation of the wire drawing plate.

[0019] Other features and advantages of the present invention will become clear from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the rear structure provided by this utility model;

[0021] Figure 2 This is a front view structural schematic diagram provided by this utility model;

[0022] Figure 3 This is a partial structural schematic diagram provided by this utility model;

[0023] Figure 4 This is a cross-sectional view of the wire drawing plate provided by this utility model.

[0024] In the diagram: 1. Positioning base plate; 2. Through hole; 3. Drawing hole; 4. Blade ring; 5. U-shaped frame; 6. Support wheel; 7. Servo motor; 8. Transmission wheel; 9. Rotating plate; 10. Pressing wheel; 11. First spring; 12. Movable sleeve; 13. Adjusting plate; 14. Actuating wheel; 15. Second spring; 16. Positioning plate; 17. Connecting plate; 18. Pin; 19. Clamping groove; 20. Locking bolt; 21. First mounting post; 22. First sliding groove; 23. First lead screw; 24. First moving block; 25. Second mounting post; 26. Fixed auxiliary wheel; 27. Second sliding groove; 28. Second moving block; 29. ​​Second lead screw; 30. Moving auxiliary wheel; 31. Rotating handwheel; 32. Fixed plate; 33. Drawing plate. Detailed Implementation

[0025] To further understand the utility model content, features and effects of this utility model, the following embodiments are provided, and detailed descriptions are given in conjunction with the accompanying drawings.

[0026] like Figures 1 to 4 As shown, the present invention provides a wire drawing machine structure for bonding wire, including a positioning base plate 1, a servo motor 7 fixedly mounted on one side of the positioning base plate 1, a transmission wheel 8 keyed to the output shaft of the servo motor 7, rotating plates 9 movably connected to the bottom ends on both sides of the transmission wheel 8, a pressing wheel 10 movably mounted on the upper end of the rotating plate 9, and a first spring 11 fixedly connected between the lower parts of the two rotating plates 9.

[0027] A movable sleeve 12 is fitted onto the output shaft of the servo motor 7. An adjusting plate 13 is fixedly connected to one side of the movable sleeve 12. A connecting plate 17 is fixedly provided on one side of the adjusting plate 13. A turntable wheel 14 is movably installed on the other side of the adjusting plate 13. A positioning plate 16 is fixedly provided at the upper middle part of the positioning base plate 1. A second spring 15 is fixedly connected between the positioning plate 16 and the connecting plate 17.

[0028] In this embodiment, preferably, a through hole 2 is provided at one end of the positioning substrate 1, and a U-shaped frame 5 is fixedly provided at both ends of one side of the through hole 2. A wire drawing plate 33 is movably installed between the two U-shaped frames 5. A plurality of wire drawing holes 3 are provided on the wire drawing plate 33, and a blade ring 4 is fixedly provided in the middle of the wire drawing hole 3.

[0029] It should be noted that the through hole 2 facilitates the position adjustment of the wire drawing plate 33, makes it easy to select wire drawing holes 3 of different sizes for docking, and the U-shaped frame 5 restricts the wire drawing plate 33 for easy placement. Furthermore, a blade ring 4 is provided inside the wire drawing hole 3 to perform chip removal on the bonding wire.

[0030] In this embodiment, preferably, the upper end of the wire drawing plate 33 is provided with a clamping groove 19, and the middle of the upper U-shaped frame 5 is threaded with a locking bolt 20, the end of the locking bolt 20 being movable inside the clamping groove 19.

[0031] It should be noted that when adjusting the position of the wire drawing plate 33, the wire drawing plate 33 is positioned and installed by the locking bolt 20 and the clamping groove 19 to maintain the fixed position of the wire drawing plate 33.

[0032] In this embodiment, preferably, the positioning base plate 1 is fixedly provided with a first mounting post 21 on one side of the through hole 2, the first mounting post 21 is provided with a first sliding groove 22, the first mounting post 21 is provided with a first lead screw 23, the first lead screw 23 is threadedly connected with a first moving block 24, and a support wheel 6 is provided on one side of the first moving block 24.

[0033] It should be noted that the setting of the first mounting post 21 facilitates the installation of the first moving block 24, and the position of the first moving block 24 can be adjusted by the first lead screw 23, which facilitates the adjustment of the position of the support wheel 6, so that the support wheel 6 can support the bonding wire and prevent the bonding wire from rubbing against the drawing plate 33 after it comes out of the drawing hole 3, which would cause the bonding wire to break.

[0034] In this embodiment, preferably, the two pressing rollers 10 are respectively arranged on both sides of the transmission roller 8, and the actuating roller 14 is arranged on the upper end of one pressing roller 10.

[0035] It should be noted that the pressing rollers 10 are located on both sides of the transmission rollers 8, which facilitates pressing the bonding wire onto the transmission rollers 8, increasing the transmission wrap angle between the bonding wire and the transmission rollers 8. The actuating roller 14 is located at the upper end of one side of the pressing roller 10, which facilitates adjusting the tightness of the bonding wire and prevents the bonding wire from breaking during transmission.

[0036] In this embodiment, preferably, fixing plates 32 are welded to both ends of one side of the positioning substrate 1;

[0037] It should be noted that the setting of the fixing plate 32 facilitates the fixed installation of the positioning base plate 1 and maintains the stability of the positioning base plate 1.

[0038] In this embodiment, preferably, the bottom ends of the two rotating plates 9 are movably connected to the positioning base plate 1 by pins 18.

[0039] It should be noted that the setting of the pin 18 facilitates the movable installation of the rotating plate 9 and the connection of the two rotating plates 9 by the first spring 11, making the rotating plate 9 easy to self-adjust.

[0040] Two second mounting posts 25 are fixedly provided at one end of the positioning base plate 1. Fixed auxiliary wheels 26 are fixedly installed at the bottom ends of the two second mounting posts 25 respectively. A second sliding groove 27 is provided at the upper end of the two second mounting posts 25. A second lead screw 29 is installed inside the second sliding groove 27. A second moving block 28 is threadedly connected to the second lead screw 29 inside the second sliding groove 27. Moving auxiliary wheels 30 are installed on some parts of the second moving block 28. The position of the moving auxiliary wheels 30 can be adjusted by the second lead screw 29, which is convenient for positioning and conveying the bonding wire in conjunction with the fixed auxiliary wheels 26, and for the winding mechanism to wind the bonding wire. Rotary handwheels 31 are fixedly installed at the top ends of the first lead screw 23 and the second lead screw 29, which is convenient for rotating the first lead screw 23 and the second lead screw 29 to adjust the position of the first moving block 24 and the second moving block 28.

[0041] The specific operational steps for this application are as follows:

[0042] When in use, the positioning base plate 1 is fixedly installed by the fixing plate 32, and the position of the wire drawing plate 33 is adjusted according to the bonding wire size. That is, the wire drawing hole 3 on the wire drawing plate 33 is selected, and the wire drawing plate 33 is pushed so that the position of the wire drawing plate 33 is adjusted through the through hole 2. Then the wire drawing plate 33 is positioned and installed by the locking bolt 20.

[0043] The bonding wire is then threaded through the drawing hole 3, and then sequentially passed through the support wheel 6, the actuating wheel 14, the pressing wheel 10, the transmission wheel 8, the fixed auxiliary wheel 26, and the moving auxiliary wheel 30. The position of the support wheel 6 is adjusted by the first lead screw 23, and the position of the moving auxiliary wheel 30 is adjusted by the second lead screw 29, so that the bonding wire can be transmitted smoothly and stably. The transmission wheel 8 is driven to rotate by the servo motor 7 to transport the bonding wire. The pressing wheel 10 can increase the transmission wrap angle between the bonding wire and the transmission wheel 8, which facilitates the transport of the bonding wire. The setting of the first spring 11 and the second spring 15 allows for adaptive adjustment of the angles of the two rotating plates 9 and the angle of the adjusting plate 13 to transport the bonding wire and prevent the bonding wire from breaking.

[0044] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A wire drawing machine structure for bonding wires, comprising a positioning substrate (1), characterized in that: A servo motor (7) is fixedly provided on one side of the positioning base plate (1). The output shaft of the servo motor (7) is keyed to a transmission wheel (8). The two sides of the transmission wheel (8) are provided with rotating plates (9) movably connected at the bottom. A pressing wheel (10) is movably installed on the upper end of the rotating plate (9). A first spring (11) is fixedly connected between the lower parts of the two rotating plates (9). A movable sleeve (12) is fitted onto the output shaft of the servo motor (7). An adjusting plate (13) is fixedly connected to one side of the movable sleeve (12). A connecting plate (17) is fixedly provided on one side of the adjusting plate (13). A turntable wheel (14) is movably installed on the other side of the adjusting plate (13). A positioning plate (16) is fixedly provided at the upper middle part of the positioning base plate (1). A second spring (15) is fixedly connected between the positioning plate (16) and the connecting plate (17).

2. The wire drawing machine structure for bonding wire according to claim 1, characterized in that: One end of the positioning base plate (1) is provided with a through hole (2), and a U-shaped frame (5) is fixedly provided at both ends of one side of the through hole (2). A wire drawing plate (33) is movably installed between the two U-shaped frames (5). A plurality of wire drawing holes (3) are provided on the wire drawing plate (33), and a blade ring (4) is fixedly provided in the middle of the wire drawing hole (3).

3. The wire drawing machine structure for bonded wire according to claim 2, characterized in that: The upper end of the wire drawing plate (33) is provided with a clamping groove (19), and the middle of the upper U-shaped frame (5) is threaded with a locking bolt (20), the end of the locking bolt (20) is movable inside the clamping groove (19).

4. The wire drawing machine structure for bonding wire according to claim 2, characterized in that: The positioning base plate (1) is fixedly provided with a first mounting post (21) on one side of the through hole (2). The first mounting post (21) has a first sliding groove (22) inside. The first mounting post (21) is provided with a first lead screw (23) through. The first lead screw (23) is threadedly connected to a first moving block (24). The first moving block (24) has a support wheel (6) on one side.

5. The wire drawing machine structure for bonding wire according to claim 1, characterized in that: The two pressing rollers (10) are respectively disposed on both sides of the transmission roller (8), and the actuating roller (14) is disposed on the upper end of one side of the pressing roller (10).

6. The wire drawing machine structure for bonding wire according to claim 1, characterized in that: Fixing plates (32) are welded to both ends of one side of the positioning base plate (1).

7. The wire drawing machine structure for bonding wire according to claim 1, characterized in that: The bottom ends of the two rotating plates (9) are movably connected to the positioning base plate (1) by pins (18).

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