Bonding wire drawing and die penetrating device and method thereof

Abstract

The invention relates to the technical field of bonding wire processing, and discloses a bonding wire drawing and die penetrating device and a method thereof.The bonding wire drawing and die penetrating device comprises a rack, a die fixing plate is arranged on one side of the rack, a wire drawing die is arranged on the die fixing plate, and a bonding wire pointing mechanism is arranged on the other side of the die fixing plate; the bonding wire pointing mechanism comprises a first roller, the first roller is rotationally connected with the rack, and a movable roller assembly is arranged on the upper side of the first roller. According to the technical scheme, the rack with the traction mechanism and the bonding wire pointing mechanism is arranged, the end of the bonding wire can be processed through the bonding wire pointing mechanism so that the bonding wire can penetrate through a mold more conveniently, the bonding wire can be pulled through the traction mechanism, more labor is saved when the bonding wire penetrates through the mold and is pointed, and the production efficiency is improved. And the safety is higher.

Description

Technical Field

[0001] The invention relates to the technical field of bonding wire processing, in particular to a bonding wire drawing and die-threading device and a bonding wire drawing and die-threading method. Background Art

[0002] Bonding is an important step in the production of integrated circuits. It is the operation of connecting the circuit chip with the lead frame. Bonding wire is a fine metal wire used to achieve electrical connection between the input / output bonding points of the circuit in the chip and the internal contact points of the lead frame when assembling semiconductor devices and integrated circuits. At present, the bonding wires used in the market are mainly divided into gold bonding wire, copper bonding wire and silver bonding wire. Most bonding wires are processed by wire drawing, which is a metal processing process. In metal pressure processing. The technical processing method of forcing the metal through the die under the action of external force, the metal cross-sectional area is compressed, and the required cross-sectional area shape and size are obtained is called metal wire drawing.

[0003] Before drawing, in order to facilitate the passing through of the die, the end of the bonding wire is generally processed by a sharpening mechanism to reduce the diameter of the end so that it can pass through the drawing die hole. The existing sharpening mechanism is generally composed of two rotatable rollers. When sharpening, the operator needs to forcefully insert the end of the bonding wire into the gap between the two rollers, and then start the motor to drive the rollers to rotate. As the rollers rotate, the bonding wire is swallowed and then rolled thin. Then the rollers reverse and the bonding wire is spit out, and this process is repeated until the end of the bonding wire is almost conical. Since the position of the existing sharpening mechanism rollers is fixed, the insertion and withdrawal of the bonding wire require force. Therefore, it is more laborious to process thick bonding wires. Moreover, when sharpening, the material is generally fed manually, which is very prone to safety accidents. Summary of the invention

[0004] The present invention provides a bonding wire drawing and die threading device and method thereof, which has the beneficial effects of safety and labor saving, and solves the problems mentioned in the above background technology that the existing bonding wire is unsafe, time-consuming and labor-intensive when threading the die.

[0005] The present invention provides the following technical solution: a bonding wire drawing die-threading device, comprising a frame, a die fixing plate is provided on one side of the frame, and a wire drawing die is provided on the die fixing plate, a bonding wire sharpening mechanism is provided on the other side of the die fixing plate, the bonding wire sharpening mechanism comprises a first roller, the first roller is rotatably connected to the frame, and a movable roller assembly is provided on the upper side of the first roller;

[0006] The movable roller assembly includes a second roller, and the second roller is slidably connected to the frame through a sliding seat, a pressing plate and a hydraulic cylinder are provided on the upper side of the second roller, the hydraulic cylinder is fixedly connected to the frame, and the hydraulic column of the hydraulic cylinder is fixedly connected to the pressing plate, and the pressing plate is elastically connected to the sliding seat through a first spring;

[0007] A traction mechanism is provided on the side of the bonding wire tipping mechanism away from the movable roller assembly, and the traction mechanism comprises a movable seat, a first through hole is provided in the middle of the movable seat, and a clamping seat is provided on one side of the movable seat.

[0008] As an optional solution of the bonding wire drawing and die-threading device described in the present invention, the movable seat is elastically connected to the frame through a second spring, and a limit seat is provided at the upper end of the movable seat, and a slanted top is provided at the upper end of the limit seat.

[0009] As an optional solution of a bonding wire drawing and mold threading device described in the present invention, an extension plate is provided on one side of the pressure plate, and a first adjusting bolt is provided at one end of the extension plate away from the pressure plate, the position of the first adjusting bolt is opposite to the limit seat, and the first adjusting bolt is screwed to the pressure plate.

[0010] As an optional scheme of a bonding wire drawing and die-threading device described in the present invention, wherein: a second through hole is provided on the clamping seat, and a clamping block is provided in the clamping seat, the clamping block is in the shape of a right-angled trapezoid, and a second adjusting bolt is provided on one side of the clamping seat, the second adjusting bolt is threadedly connected to the clamping seat, and one end of the second adjusting bolt is in contact with the clamping block.

[0011] As an optional solution of the bonding wire drawing and die-threading device described in the present invention, a connecting shaft is provided at one end of the clamping seat, the connecting shaft is a hollow structure, and the connecting shaft is rotatably connected to the clamping seat, and a transmission gear is provided at the end of the connecting shaft.

[0012] As an optional solution of the bonding wire drawing and die-threading device described in the present invention, wherein: a cylinder body is provided in the movable seat, and a partition is provided in the middle of the cylinder body, a vent is provided on the partition, a first chamber is provided on one side of the partition, and a first piston is provided in the first chamber, and a second chamber is provided on the other side of the partition, and a second piston is provided in the second chamber;

[0013] The first piston is provided with a first piston rod, and the first piston rod is elastically connected to the cylinder body through a third spring, the second piston is provided with a second piston rod, and one end of the second piston rod is provided with a rack, and the rack is meshed with the transmission gear, a triangular limit block is provided at the bottom of the frame, and the position of the triangular limit block is opposite to the first piston, and a limit plate for limiting the triangular limit block is provided at one end of the frame.

[0014] As an optional solution of the bonding wire drawing and die-threading device described in the present invention, the side of the frame is provided with a first drive motor and a second drive motor, the output shaft of the first drive motor is fixedly connected to the first roller, and the output shaft of the second drive motor is fixedly connected to the second roller.

[0015] As an optional solution of the bonding wire drawing and die-threading device described in the present invention, the sliding seat is slidably connected to the frame through a sliding groove, and the sliding seat is rotationally connected to the second rolling roller, a guide rod is provided on the upper side of the sliding seat, and the guide rod is slidably connected to the pressure plate.

[0016] As an optional solution of the bonding wire drawing die-threading device described in the present invention, a fixed sleeve is provided on one side of the die fixing plate, and a clamping groove is symmetrically provided on the fixed sleeve, and clamping teeth matching the clamping groove are provided on both sides of the wire drawing die.

[0017] The present invention also provides a method for a bonding wire drawing and die-threading device, comprising the following steps:

[0018] S1, sharpening: passing one end of the bonding wire through the gap between the first roller and the second roller and then connecting it to the clamping seat, then starting the hydraulic cylinder, and after the second roller moves to the specified position, starting the first drive motor and the second drive motor, and the first roller and the second roller work to sharpen the bonding wire;

[0019] S2. Bonding wire end trimming: Use pliers to cut off the unpointed portion of the bonding wire end, leaving the pointed portion with a smaller diameter;

[0020] S3, die passing: the trimmed bonding wire passes through the wire drawing die, and then passes through the movable roller assembly and is connected to the traction mechanism, and then the hydraulic cylinder is started again, and the traction mechanism pulls the bonding wire under the push of the hydraulic cylinder;

[0021] S4, wire drawing: remove the bonding wire from the traction mechanism, and then wind the end of the bonding wire around the winding device, and use the winding device to pull the bonding wire to move. During the movement of the bonding wire, the bonding wire is drawn through a wire drawing die.

[0022] The present invention has the following beneficial effects:

[0023] 1. A bonding wire drawing and die-threading device and method thereof, wherein a movable roller assembly is arranged at a frame, wherein the movable roller assembly comprises a first roller and a second roller, wherein the height of the second roller is adjustable, and correspondingly, a traction mechanism is also arranged at one end of the frame, wherein the traction mechanism comprises a movable seat, wherein a clamping seat is arranged on the movable seat, and the bonding wire can be clamped by the clamping seat, and the second roller can be pushed downward by a hydraulic cylinder to facilitate the second roller and the first roller to press the bonding wire, and a pressing plate is arranged at the second roller, and the pressing plate will move with the second roller, and during its movement, an extension plate on the side of the pressing plate will be linked with a limit seat at the upper end of the movable seat, thereby prompting the movable seat and the clamping seat to move.

[0024] The technical solution is to set up a frame with a traction mechanism and a bonding wire sharpening mechanism. The bonding wire sharpening mechanism can be used to process the end of the bonding wire so that it can pass through the mold more conveniently. The bonding wire can be pulled by the traction mechanism, which not only makes it easier to pass through the mold and sharpen the bonding wire, but also makes it safer.

[0025] 2. A bonding wire drawing and die-threading device and method thereof, a limit seat is provided at the upper end of the movable seat, a pressure plate is provided on the upper side of the second roller, the pressure plate is elastically connected to the sliding seat through a first spring, and the sliding seat is rotatably connected to the second roller, an extension plate is provided on one side of the pressure plate, and the pressure plate can be pushed downward by a hydraulic cylinder. When the pressure plate moves downward, on the one hand, it can push the sliding seat and the second roller downward to move, thereby prompting the first roller and the second roller to move closer to each other, so that the end of the bonding wire can be pressed and rolled, and on the other hand, when the pressure plate moves, it will also drive the extension plate to move, and when the extension plate moves, it will move with the first adjusting bolt, and the first adjusting bolt will conflict with the limit seat, and under the push of the first adjusting bolt, the limit seat and the movable seat move, and the movable seat will move with the clamping seat and the bonding wire.

[0026] The technical solution is to set a movable seat with a limited seat, and correspondingly, set an extension plate on the pressure plate for use with it. In the process of processing the bonding wire through the movable roller assembly, the pressure plate can be linked with the movable seat through the extension plate, the limited seat, and then promote the movement of the traction mechanism, which is more convenient and labor-saving.

[0027] 3. A bonding wire drawing and die-threading device and method thereof, by arranging a connecting shaft at the clamping seat, the connecting shaft is rotatably connected with the movable seat, and at the same time, a transmission gear is arranged at the end of the connecting shaft, and correspondingly, a cylinder body is arranged at the lower side of the movable seat, and a first piston and a second piston are arranged in the cylinder body. When the movable seat moves, the first piston rod will conflict with the triangular limit block, and under the push of the triangular limit block, the first piston rod will overcome the resistance of the third spring and move toward the inside of the cylinder body, and under the push of the first piston rod, the first piston moves. When the first piston moves, the air in the cylinder body is compressed, and at this time, the second piston and the second piston rod move toward the outside of the cylinder body, and under the push of the second piston rod, the rack moves, and under the drive of the rack, the transmission gear, the connecting shaft and the clamping seat will all rotate, that is, when the movable roller assembly is pressing the bonding wire, under the drive of the traction mechanism, the bonding wire will also rotate, so that the end of the bonding wire can be better formed, the pressing time can be reduced, and the work efficiency can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the structure of the present invention.

[0029] Figure 2 It is a schematic diagram of the frame end structure of the present invention.

[0030] Figure 3 It is a schematic diagram of the internal structure of the rack of the present invention.

[0031] Figure 4 It is a schematic diagram of the internal structure of the clamping seat of the present invention.

[0032] Figure 5 It is a schematic diagram of the internal structure of the movable seat of the present invention.

[0033] Figure 6 It is a schematic diagram of the internal structure of the cylinder body of the present invention.

[0034] In the figure: 1, frame; 2, die fixing plate; 3, wire drawing die; 4, first roller; 5, second roller; 6, sliding seat; 7, pressing plate; 8, hydraulic cylinder; 9, first spring; 10, movable seat; 1001, first through hole; 11, clamping seat; 1101, second through hole; 1102, clamping block; 12, second spring; 13, limit seat; 14, extension plate; 15, first adjusting bolt; 16, second adjusting bolt; 17, connecting shaft; 18, transmission Moving gear; 19, cylinder body; 1901, first chamber; 1902, first piston; 1903, second chamber; 1904, second piston; 1905, first piston rod; 1906, second piston rod; 20, partition; 21, vent; 22, third spring; 23, rack; 24, triangular limit block; 25, first drive motor; 26, second drive motor; 27, guide rod; 28, fixed sleeve; 2801, slot; 29, limit plate. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] Example 1

[0037] See also Figures 1 to 6 The present invention provides a bonding wire drawing and die-threading device, comprising a frame 1, a die fixing plate 2 is provided on one side of the frame 1, and a wire drawing die 3 is provided on the die fixing plate 2, a bonding wire sharpening mechanism is provided on the other side of the die fixing plate 2, and the bonding wire sharpening mechanism comprises a first rolling roller 4, the first rolling roller 4 is rotatably connected to the frame 1, and a movable rolling roller assembly is provided on the upper side of the first rolling roller 4;

[0038] The movable roller assembly includes a second roller 5, and the second roller 5 is slidably connected to the frame 1 through a sliding seat 6. A pressing plate 7 and a hydraulic cylinder 8 are provided on the upper side of the second roller 5. The hydraulic cylinder 8 is fixedly connected to the frame 1, and the hydraulic column of the hydraulic cylinder 8 is fixedly connected to the pressing plate 7. The pressing plate 7 is elastically connected to the sliding seat 6 through a first spring 9.

[0039] A traction mechanism is provided on the side of the bonding wire tipping mechanism away from the movable roller assembly, and the traction mechanism includes a movable seat 10 , a first through hole 1001 is provided in the middle of the movable seat 10 , and a clamping seat 11 is provided on one side of the movable seat 10 .

[0040] The technical solution is to set a movable roller assembly at the frame 1, the movable roller assembly includes a first roller 4 and a second roller 5, the height of the second roller 5 is adjustable, and correspondingly, a traction mechanism is also provided at one end of the frame 1, the traction mechanism includes a movable seat 10, a clamping seat 11 is provided on the movable seat 10, the bonding wire can be clamped by the clamping seat 11, and the second roller 5 can be pushed downward by the hydraulic cylinder 8 to facilitate the second roller 5 and the first roller 4 to press the bonding wire, and a pressing plate 7 is provided at the second roller 5, and the pressing plate 7 will move with the second roller 5, and during its movement, the extension plate 14 on the side of the pressing plate 7 will be linked with the limit seat 13 at the upper end of the movable seat 10, thereby prompting the movable seat 10 and the clamping seat 11 to move.

[0041] In the present technical solution, since the second roller 5 at the movable roller assembly is adjustable, the bonding wire can be passed through with less effort.

[0042] The technical solution is to set up a frame 1 with a traction mechanism and a bonding wire sharpening mechanism. The bonding wire sharpening mechanism can be used to process the end of the bonding wire so that it can pass through the mold more conveniently. The bonding wire can be pulled by the traction mechanism, which not only makes it easier to pass through the mold and sharpen the bonding wire, but also makes it safer.

[0043] Example 2

[0044] This embodiment is an explanation based on the embodiment 1. For details, please refer to Figures 1 to 6 The movable seat 10 is elastically connected to the frame 1 through the second spring 12, and a limit seat 13 is provided at the upper end of the movable seat 10, and an inclined top is provided at the upper end of the limit seat 13.

[0045] An extension plate 14 is provided on one side of the pressing plate 7 , and a first adjusting bolt 15 is provided at one end of the extension plate 14 away from the pressing plate 7 . The first adjusting bolt 15 is located opposite to the limiting seat 13 , and the first adjusting bolt 15 is screwed to the pressing plate 7 .

[0046] A second through hole 1101 is provided on the clamping seat 11, and a clamping block 1102 is provided inside the clamping seat 11. The clamping block 1102 is in the shape of a right-angled trapezoid. A second adjusting bolt 16 is provided on one side of the clamping seat 11. The second adjusting bolt 16 is screwed to the clamping seat 11, and one end of the second adjusting bolt 16 abuts against the clamping block 1102.

[0047] A limit seat 13 is provided at the upper end of the movable seat 10, and a pressure plate 7 is provided on the upper side of the second rolling roller 5. The pressure plate 7 is elastically connected to the sliding seat 6 through the first spring 9, and the sliding seat 6 is rotatably connected to the second rolling roller 5. An extension plate 14 is provided on one side of the pressure plate 7, and the pressure plate 7 can be pushed downward by the hydraulic cylinder 8. When the pressure plate 7 moves downward, on the one hand, it can push the sliding seat 6 and the second rolling roller 5 downward to move, thereby prompting the first rolling roller 4 and the second rolling roller 5 to move closer to each other, so that the end of the bonding wire can be pressed. On the other hand, when the pressure plate 7 moves, it will also drive the extension plate 14 to move, and when the extension plate 14 moves, it will move with the first adjusting bolt 15, and the first adjusting bolt 15 will conflict with the limit seat 13. Under the push of the first adjusting bolt 15, the limit seat 13 and the movable seat 10 move, and the movable seat 10 will move with the clamping seat 11 and the bonding wire.

[0048] The limiting seat 13 is detachable, and the stroke of the movable seat 10 can be adjusted by replacing the limiting seat 13 of different specifications.

[0049] The technical solution is to set a movable seat 10 with a limiting seat, and correspondingly, set an extension plate 14 for use with the pressure plate 7. In the process of processing the bonding wire through the movable roller assembly, the pressure plate 7 can be linked with the movable seat 10 through the extension plate 14 and the limiting seat 13, thereby prompting the traction mechanism to move, which is more convenient and labor-saving.

[0050] A movable clamping block 1102 is provided in the clamping seat 11. When the bonding wire needs to be fixed, the end of the bonding wire only needs to be passed through the second through hole 1101, and then the second adjusting bolt 16 is tightened. Under the push of the second adjusting bolt 16, the clamping block 1102 can clamp the bonding wire.

[0051] Example 3

[0052] This embodiment is an explanation based on the embodiment 1. For details, please refer to Figures 1 to 6 A connecting shaft 17 is provided at one end of the clamping seat 11 . The connecting shaft 17 is a hollow structure and is rotatably connected to the clamping seat 11 . A transmission gear 18 is provided at the end of the connecting shaft 17 .

[0053] The movable seat 10 is provided with a cylinder body 19, and a partition 20 is provided in the middle of the cylinder body 19, and a vent 21 is provided on the partition 20, a first chamber 1901 is provided on one side of the partition 20, and a first piston 1902 is provided in the first chamber 1901, and a second chamber 1903 is provided on the other side of the partition 20, and a second piston 1904 is provided in the second chamber 1903;

[0054] A first piston rod 1905 is provided on the first piston 1902, and the first piston rod 1905 is elastically connected to the cylinder body 19 through a third spring 22. A second piston rod 1906 is provided on the second piston 1904, and a rack 23 is provided at one end of the second piston rod 1906, and the rack 23 is meshed with the transmission gear 18. A triangular limit block 24 is provided at the bottom of the frame 1, and the position of the triangular limit block 24 is opposite to the first piston 1902. A limit plate 29 for limiting the triangular limit block 24 is provided at one end of the frame 1.

[0055] In order to further improve the rolling point effect, the present technical solution is provided with a connecting shaft 17 at the clamping seat 11, and the connecting shaft 17 is rotatably connected with the movable seat 10. At the same time, a transmission gear 18 is provided at the end of the connecting shaft 17. Correspondingly, a cylinder body 19 is provided at the lower side of the movable seat 10, and a first piston 1902 and a second piston 1904 are provided in the cylinder body 19. When the movable seat 10 moves, the first piston rod 1905 will conflict with the triangular limit block 24. Under the push of the triangular limit block 24, the first piston rod 1905 will overcome the resistance of the third spring 22 and move inside the cylinder body 19. Pushed by 905, the first piston 1902 moves. When the first piston 1902 moves, the air in the cylinder 19 is compressed. At this time, the second piston 1904 and the second piston rod 1906 move toward the outside of the cylinder 19. Pushed by the second piston rod 1906, the rack 23 moves. Driven by the rack 23, the transmission gear 18, the connecting shaft 17, and the clamping seat 11 all rotate. That is to say, when the movable roller assembly is pressing the bonding wire, the bonding wire will also rotate under the drive of the traction mechanism, which can better promote the forming of the end of the bonding wire, reduce the pressing time, and improve work efficiency.

[0056] Example 4

[0057] This embodiment is an explanation based on the embodiment 1. For details, please refer to Figures 1 to 6 A first drive motor 25 and a second drive motor 26 are provided on the side of the frame 1 . The output shaft of the first drive motor 25 is fixedly connected to the first roller 4 , and the output shaft of the second drive motor 26 is fixedly connected to the second roller 5 .

[0058] The sliding seat 6 is slidably connected to the frame 1 through a sliding groove, and the sliding seat 6 is rotationally connected to the second roller 5. A guide rod 27 is provided on the upper side of the sliding seat 6, and the guide rod 27 is slidably connected to the pressure plate 7.

[0059] A fixing sleeve 28 is provided on one side of the mold fixing plate 2 , and a clamping groove 2801 is symmetrically provided on the fixing sleeve 28 . Clamping teeth matching with the clamping groove 2801 are provided on both sides of the wire drawing die 3 .

[0060] In order to facilitate the disassembly of the wire drawing die 3, a fixed sleeve 28 is provided on the die fixing plate 2. Both ends of the fixed sleeve 28 are provided with openings. When in use, the wire drawing die 3 only needs to be inserted into the fixed sleeve 28. Under the action of the latch teeth and the latch groove 2801, the wire drawing die 3 can be engaged with the fixed sleeve 28. The existence of the guide rod 27 can make the pressure plate 7 more stable when moving up and down.

[0061] The specific working principle is as follows: first, the bonding wire is passed around the mold fixing plate 2, and then passed through the gap between the first roller 4 and the second roller 5 and fixed to the clamping seat 11, and then the hydraulic cylinder 8 is started. Under the push of the hydraulic cylinder 8, the pressing plate 7 moves downward, and under the push of the pressing plate 7, the sliding seat 6 moves downward with the second roller 5, and then the first drive motor 25 and the second drive motor 26 work, the first roller 4 and the second roller 5 rotate, the bonding wire is swallowed, and its end is flattened, and then the first drive motor 25 and the second drive motor 26 reverse, and the bonding wire is spit out, and this is repeated until the end of the bonding wire meets the required size, and then the bonding wire is removed from the clamping seat 11. The bonding wire is taken off the holding seat 11, and then the thicker part of the end of the bonding wire is clamped off with pliers, and then the bonding wire is passed through the wire drawing die 3 and fixed to the clamping seat 11 again, and then the triangular limit block 24 is moved aside and the hydraulic cylinder 8 is started again. Under the push of the hydraulic cylinder 8, the movable seat 10 moves again. After losing the obstruction of the triangular limit block 24, the clamping seat 11 no longer rotates. After the bonding wire passes through the wire drawing die 3, it will move a distance driven by the traction mechanism, and then the bonding wire on the clamping seat 11 is removed, and then the bonding wire is wound on the winding equipment for winding and drawing. The traction mechanism can conveniently complete the die insertion and tip rolling of the bonding wire.

[0062] Since the bonding wire needs to pass through the movable roller assembly multiple times during use of the device, in order to improve efficiency, the present technical solution provides a second roller 5 that can be raised and lowered at the movable roller assembly.

[0063] The present invention also provides a method for a bonding wire drawing and die-threading device, comprising the following steps:

[0064] S1, sharpening: one end of the bonding wire is passed through the gap between the first roller 4 and the second roller 5 and then connected to the clamping seat 11, and then the hydraulic cylinder 8 is started. After the second roller 5 moves to the specified position, the first drive motor 25 and the second drive motor 26 are started, and the first roller 4 and the second roller 5 work to sharpen the bonding wire;

[0065] S2. Bonding wire end trimming: Use pliers to cut off the unpointed portion of the bonding wire end, leaving the pointed portion with a smaller diameter;

[0066] S3, die passing: the trimmed bonding wire passes through the wire drawing die 3, and then passes through the movable roller assembly and is connected to the traction mechanism, and then the hydraulic cylinder 8 is started again, and the traction mechanism pulls the bonding wire under the push of the hydraulic cylinder 8;

[0067] S4, wire drawing: remove the bonding wire from the traction mechanism, and then wind the end of the bonding wire onto the winding device, and use the winding device to pull the bonding wire to move. During the movement of the bonding wire, the bonding wire is drawn by the wire drawing die 3.

[0068] Since the end of the bonding wire will be clamped by the clamping seat 11 during the sharpening process and cannot be sharpened, the unsharpened part needs to be removed after the sharpening is completed so that the bonding wire can pass through the wire drawing die 3. Under normal circumstances, the portion of the bonding wire that has been sharpened can easily pass through the wire drawing die 3, but the unsharpened portion is more laborious to pass through the wire drawing die 3. In the present technical solution, a traction mechanism is provided to pull the bonding wire, so that the bonding wire can pass through the wire drawing die 3 more conveniently, and the whole process is more labor-saving.

[0069] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0070] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A bonding wire drawing and die-threading device, comprising a frame (1), a die fixing plate (2) is provided on one side of the frame (1), and a wire drawing die (3) is provided on the die fixing plate (2), characterized in that: A bonding wire sharpening mechanism is provided on the other side of the mold fixing plate (2), the bonding wire sharpening mechanism comprising a first roller (4), the first roller (4) being rotatably connected to the frame (1), and a movable roller assembly is provided on the upper side of the first roller (4); The movable roller assembly comprises a second roller (5), and the second roller (5) is slidably connected to the frame (1) via a sliding seat (6), a pressing plate (7) and a hydraulic cylinder (8) are provided on the upper side of the second roller (5), the hydraulic cylinder (8) is fixedly connected to the frame (1), and the hydraulic column of the hydraulic cylinder (8) is fixedly connected to the pressing plate (7), and the pressing plate (7) is elastically connected to the sliding seat (6) via a first spring (9); A traction mechanism is provided on the side of the bonding wire tipping mechanism away from the movable roller assembly, and the traction mechanism comprises a movable seat (10), a first through hole (1001) is provided in the middle of the movable seat (10), and a clamping seat (11) is provided on one side of the movable seat (10).

2. A bonding wire drawing and die-threading device according to claim 1, characterized in that: The movable seat (10) is elastically connected to the frame (1) via a second spring (12), and a limit seat (13) is provided at the upper end of the movable seat (10), and an inclined top is provided at the upper end of the limit seat (13).

3. A bonding wire drawing and die-threading device according to claim 2, characterized in that: An extension plate (14) is provided on one side of the pressure plate (7), and a first adjusting bolt (15) is provided at one end of the extension plate (14) away from the pressure plate (7), the position of the first adjusting bolt (15) is opposite to the limiting seat (13), and the first adjusting bolt (15) is screwed to the pressure plate (7).

4. A bonding wire drawing and die-threading device according to claim 3, characterized in that: The clamping seat (11) is provided with a second through hole (1101), and a clamping block (1102) is provided inside the clamping seat (11), and the clamping block (1102) is in the shape of a right-angled trapezoid. A second adjusting bolt (16) is provided on one side of the clamping seat (11), and the second adjusting bolt (16) is screwed to the clamping seat (11), and one end of the second adjusting bolt (16) is in contact with the clamping block (1102).

5. A bonding wire drawing and die-threading device according to claim 4, characterized in that: A connecting shaft (17) is provided at one end of the clamping seat (11). The connecting shaft (17) is a hollow structure and is rotatably connected to the clamping seat (11). A transmission gear (18) is provided at the end of the connecting shaft (17).

6. A bonding wire drawing and die-threading device according to claim 5, characterized in that: A cylinder body (19) is provided in the movable seat (10), and a partition (20) is provided in the middle of the cylinder body (19), and a vent (21) is provided on the partition (20); a first chamber (1901) is provided on one side of the partition (20), and a first piston (1902) is provided in the first chamber (1901); a second chamber (1903) is provided on the other side of the partition (20), and a second piston (1904) is provided in the second chamber (1903); The first piston (1902) is provided with a first piston rod (1905), and the first piston rod (1905) is elastically connected to the cylinder body (19) through a third spring (22); the second piston (1904) is provided with a second piston rod (1906), and one end of the second piston rod (1906) is provided with a rack (23), and the rack (23) is meshed with the transmission gear (18); a triangular limit block (24) is provided at the bottom of the frame (1), and the position of the triangular limit block (24) is opposite to the first piston (1902); and a limit plate (29) for limiting the triangular limit block (24) is provided at one end of the frame (1).

7. A bonding wire drawing and die-threading device according to claim 6, characterized in that: A first drive motor (25) and a second drive motor (26) are provided on the side of the frame (1); the output shaft of the first drive motor (25) is fixedly connected to the first roller (4), and the output shaft of the second drive motor (26) is fixedly connected to the second roller (5).

8. A bonding wire drawing and die-threading device according to claim 7, characterized in that: The sliding seat (6) is slidably connected to the frame (1) via a sliding groove, and the sliding seat (6) is rotationally connected to the second roller (5). A guide rod (27) is provided on the upper side of the sliding seat (6), and the guide rod (27) is slidably connected to the pressure plate (7).

9. A bonding wire drawing and die-threading device according to claim 8, characterized in that: A fixing sleeve (28) is provided on one side of the mold fixing plate (2), and a clamping groove (2801) is symmetrically provided on the fixing sleeve (28), and clamping teeth matching with the clamping groove (2801) are provided on both sides of the wire drawing mold (3).

10. A method for drawing and passing a bonding wire through a die according to claim 9, characterized in that: The steps include: S1, sharpening: one end of the bonding wire is passed through the gap between the first roller (4) and the second roller (5) and then connected to the clamping seat (11), and then the hydraulic cylinder (8) is started. After the second roller (5) moves to a specified position, the first drive motor (25) and the second drive motor (26) are started, and the first roller (4) and the second roller (5) are operated to sharpen the bonding wire; S2. Bonding wire end trimming: Use pliers to cut off the unpointed portion of the bonding wire end, leaving the pointed portion with a smaller diameter; S3, die passing: the trimmed bonding wire passes through the wire drawing die (3), and then passes through the movable roller assembly and is connected to the traction mechanism, and then the hydraulic cylinder (8) is started again, and the traction mechanism pulls the bonding wire under the push of the hydraulic cylinder (8); S4, wire drawing: the bonding wire on the pulling mechanism is removed, and then the end of the bonding wire is wound on a winding device, and the bonding wire is pulled to move by the winding device. During the movement of the bonding wire, the bonding wire is drawn by a wire drawing die (3).

Images