CN116135419A - Welding method for welding wire clamping-free wire tail of wire welding machine and wire welding machine - Google Patents
Welding method for welding wire clamping-free wire tail of wire welding machine and wire welding machine Download PDFInfo
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- CN116135419A CN116135419A CN202111367699.1A CN202111367699A CN116135419A CN 116135419 A CN116135419 A CN 116135419A CN 202111367699 A CN202111367699 A CN 202111367699A CN 116135419 A CN116135419 A CN 116135419A
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- wire
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- passing rod
- wire passing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21F—WORKING OR PROCESSING OF METAL WIRE
- B21F15/00—Connecting wire to wire or other metallic material or objects; Connecting parts by means of wire
- B21F15/02—Connecting wire to wire or other metallic material or objects; Connecting parts by means of wire wire with wire
- B21F15/06—Connecting wire to wire or other metallic material or objects; Connecting parts by means of wire wire with wire with additional connecting elements or material
- B21F15/08—Connecting wire to wire or other metallic material or objects; Connecting parts by means of wire wire with wire with additional connecting elements or material making use of soldering or welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/0426—Fixtures for other work
- B23K37/0435—Clamps
- B23K37/0443—Jigs
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Wire Bonding (AREA)
Abstract
The invention relates to a welding method for a welding wire clamp-free wire tail of a welding wire machine and the welding wire machine. The invention relates to a welding method for a wire clamping-free tail of a welding wire of a wire welding machine, which comprises the following steps: including the bonding wire machine, the bonding wire machine is including being used for carrying the wire feeding mechanism of bonding wire, wire feeding mechanism includes the line pole of crossing, and its step includes: s1, selecting a wire passing rod made of a conductive material, and enabling the wire passing rod to be electrically connected with a negative electrode of a sparking box or grounded; step S2, setting the wire passing rod on a wire feeding path of the welding wire; and S3, enabling the welding wire to be in friction contact with the wire passing rod. The welding method for the welding wire clamp-free wire tail of the welding wire of the wire welding machine and the wire welding machine thereof have the advantages of high welding quality and low welding operation difficulty.
Description
Technical Field
The invention relates to the technical field of welding, in particular to a welding method for a welding wire clamp-free wire tail of a welding wire machine and the welding wire machine.
Background
The gold wire bonding process is a process of connecting the silicon wafer and the external leads with a suitable material, thereby forming good electrical characteristics. It is the most important ring in semiconductor technology, and plays a role in tightly connecting an internal chip and an external frame. Each bond wire must be accurately connected to the chip and any failure can cause quality problems. Today, the gold price is increasingly high, the yield of products is improved, the enterprise cost can be certainly reduced, and the economic benefit of enterprises is increased. When the gold wires are bonded, the gold balls are formed by melting the tail of the gold wires through high-pressure firing of the firing rod, and the wire heads are penetrated in the riving knife.
At present, the tail of the whole circle of gold wires needs to be manually clamped to a grounding mechanism of a wire feeding device when the known semiconductor packaging wire bonding machine burns balls, and the purpose is to enable ball burning current to pass through the whole circle of gold wires and then pass through the grounding mechanism to form a ball burning loop of a sparking device. However, this wire tail clamping method has a limit that is difficult to neglect: (1) Before firing, the tail part of the whole circle of gold wires is clamped to a grounding mechanism manually, otherwise, the ball cannot be fired; (2) When the ball is burned, certain operation difficulty exists, and the quality of the burned ball can be influenced when the gold wires are clamped or not fully contacted; (3) The on-resistance of the whole turn of gold wire is larger, and the phenomenon of gold wire blowing can occur.
Therefore, it is necessary to develop a ball burning process without wire clamping tail, which effectively improves the accuracy and stability of gold wire bonding, reduces the operation difficulty and increases the economic benefit of enterprises.
Disclosure of Invention
Accordingly, the invention aims to provide a welding method without clamping wire tail for a welding wire of a wire welding machine and the wire welding machine thereof, which have the advantages of high welding quality and low welding operation difficulty.
The welding method of the wire clamping-free tail of the welding wire for the wire welding machine comprises the wire welding machine, wherein the wire welding machine comprises a wire feeding mechanism for conveying the welding wire, the wire feeding mechanism comprises a wire passing rod, and the method comprises the following steps of:
s1, selecting a wire passing rod made of a conductive material, and enabling the wire passing rod to be electrically connected with a negative electrode of a sparking box or grounded;
step S2, setting the wire passing rod on a wire feeding path of the welding wire;
and S3, enabling the welding wire to be in friction contact with the wire passing rod.
According to the welding method for the welding wire clamp-free tail of the welding wire of the wire welding machine, the wire passing rod is grounded, so that the gold wire forms a sparking circuit, the whole circle of gold wire is not required to be connected in series in the sparking circuit, the gold wire is prevented from being burnt and clamped, and the quality and stability of the burned ball are improved.
Further, the wire passing rod comprises a first wire passing rod and a second wire passing rod, and the welding wire is in contact with the lower surface of the first wire passing rod and the upper surface of the second wire passing rod. The two wire passing rods can improve the stability of the welding wire in contact with the wire passing rods.
The invention also discloses a bonding wire machine without wire clamping tail, comprising:
the wire feeding device comprises a mounting plate, a rotatable coil mounting seat, a wire passing rod and a tightening assembly are sequentially arranged on the mounting plate along the wire feeding direction, the coil mounting seat is connected with a power source, the power source is used for driving the coil mounting seat to rotate, the wire passing rod is made of conductive materials, one end of the wire passing rod is connected with a grounding wire through a fastener, and the tightening assembly is used for tensioning a welding wire and enabling the welding wire to be in friction contact with the wire passing rod;
the ignition box is provided with a positive electrode and a negative electrode, and the grounding wire is electrically connected with the negative electrode;
the ignition rod is electrically connected with the positive electrode;
the input end of the welding wire clamp is used for receiving welding wires sent by the wire feeding device;
the chopper is arranged at the output end of the welding wire clamp and corresponds to the ignition rod, and the chopper is also connected with the energy converter. Through the grounding of the wire passing rod, the gold wires form a sparking circuit, the whole turn of gold wires are not required to be connected in series in the sparking circuit, the gold wires are prevented from being burnt and clamped, and the quality and stability of the burned ball are improved.
Further, the wire passing rod is installed on the mounting plate in an insulating mode. The grounding stability is improved.
Further, the number of the wire passing rods is two, the wire passing rods comprise a first wire passing rod and a second wire passing rod, and the first wire passing rod or the second wire passing rod is connected with a grounding wire through a fastener. The stability that two wire passing poles can improve gold thread and contact wherein the intention is crossed the wire pole and can be realized peeling off the gold thread from the gold thread circle, and the second is crossed the wire pole and can be prevented that the gold thread from dropping when leading tight subassembly inefficacy.
Further, the number of the wire passing rods is two, the wire passing rods comprise a first wire passing rod and a second wire passing rod, the first wire passing rod and the second wire passing rod are connected with a grounding wire through fasteners, and the welding wires are respectively wound on the first wire passing rod and the second wire passing rod. Compared with the grounding of only one wire passing rod, the structure ensures that the sparking circuit is more stable.
Further, the device further comprises two mounting blocks, the two mounting blocks are arranged on the mounting plate, the first wire passing rod and the second wire passing rod are respectively inserted on the mounting blocks, fixing holes are further formed in the mounting blocks, and fixing pieces penetrate through the fixing holes to fix the wire passing rods. The structure can realize the quick assembly disassembly of the wire passing rod, and the service life of the device is prolonged.
Further, the device also includes a shield for covering the coil mount and the first wire passing bar therein. The gold wire in the device is protected to the protection casing, prevents dust or the debris of sputtering in the air from polluting the gold wire, leads to the fact the influence to the sintering ball welding of gold wire.
Further, the protective cover is provided with an avoidance hole, the avoidance hole corresponds to the wire feeding path of the welding wire, and the welding wire is prevented from touching the protective cover. Avoidance hole prevents that the bonding wire from taking place to scratch with the protection casing, avoids causing the damage to the gold thread.
Further, protection casing one side pass through the flip subassembly with the mounting panel is connected, the flip subassembly includes flip base, flip axle mount pad, flip axle and connecting block, flip base one end with the mounting panel is fixed, the other end with the flip axle mount pad is fixed, be equipped with the open slot on the flip axle mount pad, the flip axle sets up in the open slot, its both ends wear to establish respectively in the flip axle mount pad, the connecting block cover is established on the flip axle and with the protection casing is connected. The overturning assembly realizes overturning of the protective cover, and is convenient for realizing switching of two states of opening of the protective cover and the cage cover.
For a better understanding and implementation, the present invention is described in detail below with reference to the drawings.
Drawings
Fig. 1 is a schematic diagram of a wire bonding machine with a wire tail free of wire clamping according to the present invention;
fig. 2 is an axial view of the wire feeding device according to the present invention;
fig. 3 is a side view of the wire feeding device according to the present invention;
FIG. 4 is an installation cross-sectional view of the wire passing lever;
reference numerals illustrate: 1. a wire feeding device; 11. a mounting plate; 12. a coil mounting base; 13. a wire passing rod; 131. a first wire passing rod; 132. a second wire passing rod; 14. a tightening assembly; 141. a detection unit; 142. an air blowing part; 15. a power source; 17. a mounting block; 171. a fixing hole; 18. a protective cover; 19. a flip assembly; 191. overturning a base; 192. a turnover shaft mounting seat; 193. a turnover shaft; 194. a connecting block; 2. a firing box; 3. a firing rod; 4. a welding wire clamp; 5. a riving knife; 6. and (5) welding wires.
Detailed Description
Referring to fig. 1-4, fig. 1 is a schematic diagram of a wire bonding machine with a wire tail free wire bonding according to the present invention; fig. 2 is an axial view of the wire feeding device according to the present invention; fig. 3 is a side view of the wire feeding device according to the present invention; fig. 4 is an installation sectional view of the wire passing lever. The invention discloses a bonding wire machine without wire clamping tail, comprising: wire feeding device 1, firing box 2, firing rod 3, bonding wire clamp 4 and riving knife 5.
The wire feeding device 1 comprises a mounting plate 11, and a rotatable coil mounting seat 12, a wire passing rod 13 and a tightening assembly 14 are sequentially arranged on the mounting plate 11 along the wire feeding direction. The coil mounting seat 12 is connected with a power source 15, and the power source 15 is used for driving the coil mounting seat 12 to rotate, so that stripping and sending out of the welding wire 6 on the coil are realized.
The tightening assembly 14 includes a detecting portion 141 and an air blowing portion 142, the detecting portion 141 is electrically connected with the power source 15, and is used for detecting swinging of the bonding wire 6, when the bonding wire 6 swings, the power source 15 is controlled to start, and the air blowing portion 142 is communicated with an external air source, and is used for blowing air to the bonding wire 6 so as to tension the bonding wire 6. In this embodiment, the bonding wire 6 is a gold wire. Besides blowing, the gold wires can be flexibly tensioned by adopting a mode of arranging movable rollers, elastic elements and the like.
The wire passing rod 13 is made of conductive material, one end of the wire passing rod is connected with a grounding wire through a fastener, and the tightening assembly 14 is used for tightening the bonding wire 6 and enabling the bonding wire 6 to be in friction contact with the wire passing rod 13. The wire passing rod 13 is mounted on the mounting plate 11 in an insulating manner. The number of the wire passing rods 13 is two, the wire passing rods comprise a first wire passing rod 131 and a second wire passing rod 132, and the first wire passing rod 131 or the second wire passing rod 132 is connected with a grounding wire through a fastener. The fastener may be a screw or the like. The first wire passing rod 131 and the second wire passing rod 132 may be connected to a ground wire through fasteners, and the bonding wires 6 are wound on the first wire passing rod 131 and the second wire passing rod 132 at this time, so as to improve the contact stability of the bonding wires 6 and the wire passing rod 13. The wire passing rod 13 and the mounting plate 11 are further provided with mounting blocks 17, two mounting blocks 17 are arranged on the mounting plate 11, the first wire passing rod 131 and the second wire passing rod 132 are respectively inserted into the mounting blocks 17, the mounting blocks 17 are further provided with fixing holes 171, and fixing pieces penetrate through the fixing holes 171 to fix the wire passing rod 13.
In order to avoid contamination of the gold wires, the wire feeding device 1 is further provided with a protective cover 18, wherein the protective cover 18 is used for covering the coil mounting base 12 and the first wire passing rod 131. The protection cover 18 is provided with an avoidance hole, the avoidance hole corresponds to a wire feeding path of the welding wire 6, and the welding wire 6 is prevented from touching the protection cover 18. The shield 18 is made of a transparent material. The protection casing 18 one side pass through the upset subassembly 19 with mounting panel 11 is connected, the upset subassembly 19 includes upset base 191, upset axle mount pad 192, upset axle 193 and connecting block 194, upset base 191 one end with mounting panel 11 is fixed, the other end with upset axle mount pad 192 is fixed, be equipped with the open slot on the upset axle mount pad 192, upset axle 193 sets up in the open slot, its both ends wear to establish respectively in the upset axle mount pad 192, the connecting block 194 cover is established on the upset axle 193 and with the protection casing 18 is connected.
The sparking box 2 is provided with a positive electrode and a negative electrode, and the grounding wire is electrically connected with the negative electrode. The sparking rod 3 is electrically connected with the positive electrode. The input end of the wire clamp 4 is used for receiving the wire 6 sent by the wire feeding device 1, and the wire clamp 4 is in insulated contact with the wire 6. The chopper 5 is arranged at the output end of the welding wire clamp 4 and corresponds to the ignition rod 3, and the chopper 5 is also connected with the transducer.
The specific using operation steps are as follows:
and installing the gold thread coil on the coil installation seat, so that the gold thread is sequentially wound on the first wire passing rod and the second wire passing rod. Preferably, the bonding wire is in contact with a lower surface of the first wire passing bar and in contact with an upper surface of the second wire passing bar. The gold thread is sent out after passing through the tightening device. When the detecting part detects the swing of the gold thread, the power source drives the coil mounting seat to rotate, and the gold thread meeting the welding length requirement can be conveyed. In the welding process, through the grounding of the wire passing rod, the gold wire is contacted with the wire passing rod, the head of the gold wire is matched with the wire passing rod to form a firing ball loop of a firing box, the wire passing rod, the bonding wire and the wire passing rod, and only the gold wire of the stripped coil is connected into the loop, so that the condition of burning the gold wire is avoided, and the stability of the loop is improved.
The invention also discloses a welding method of the welding wire clamp-free wire tail for the welding wire machine, which comprises the welding wire machine, wherein the welding wire machine comprises a wire feeding mechanism for conveying the welding wire, the wire feeding mechanism comprises a wire passing rod, and the welding wire clamp-free wire tail comprises the following steps:
s1, selecting a wire passing rod made of a conductive material, and enabling the wire passing rod to be electrically connected with a negative electrode of a sparking box or grounded;
step S2, setting the wire passing rod on a wire feeding path of the welding wire;
and S3, enabling the welding wire to be in friction contact with the wire passing rod.
According to the welding method for the welding wire clamp-free tail of the welding wire of the wire welding machine and the wire welding machine, the wire passing rod is grounded, so that the gold wire forms a sparking circuit, the whole circle of gold wire is not required to be connected in series to the sparking circuit, the wire tail is not required to be clamped and grounded, the gold wire is prevented from being burnt and clamped, meanwhile, the gold wire is ensured to be fully contacted with the grounding end, and the quality and stability of the burned ball are effectively improved.
The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that modifications and improvements can be made by those skilled in the art without departing from the spirit of the invention, and the invention is intended to encompass such modifications and improvements.
Claims (10)
1. A welding method for a wire clip-free tail of a wire bonding machine, comprising a wire bonding machine including a wire feeding mechanism for delivering a wire, the wire feeding mechanism including a wire passing bar, characterized by comprising the steps of:
s1, selecting a wire passing rod made of a conductive material, and enabling the wire passing rod to be electrically connected with a negative electrode of a sparking box or grounded;
step S2, setting the wire passing rod on a wire feeding path of the welding wire;
and S3, enabling the welding wire to be in friction contact with the wire passing rod.
2. The wire bonding method without wire clamping tail according to claim 1, wherein: the wire passing rod comprises a first wire passing rod and a second wire passing rod, and the welding wire is contacted with the lower surface of the first wire passing rod and the upper surface of the second wire passing rod.
3. A wire bonding machine with a wire bond free of wire bond tails, comprising:
the wire feeding device comprises a mounting plate, a rotatable coil mounting seat, a wire passing rod and a tightening assembly are sequentially arranged on the mounting plate along the wire feeding direction, the coil mounting seat is connected with a power source, the power source is used for driving the coil mounting seat to rotate, the wire passing rod is made of conductive materials, one end of the wire passing rod is connected with a grounding wire through a fastener, and the tightening assembly is used for tensioning a welding wire and enabling the welding wire to be in friction contact with the wire passing rod;
the ignition box is provided with a positive electrode and a negative electrode, and the grounding wire is electrically connected with the negative electrode;
the ignition rod is electrically connected with the positive electrode;
the input end of the welding wire clamp is used for receiving welding wires sent by the wire feeding device;
the chopper is arranged at the output end of the welding wire clamp and corresponds to the ignition rod, and the chopper is also connected with the energy converter.
4. A wire bonding machine free of wire clamping tails as defined in claim 3 wherein: the wire passing rod is installed on the mounting plate in an insulating mode.
5. The wire bonding machine of claim 4 wherein: the two wire passing rods comprise a first wire passing rod and a second wire passing rod, and the first wire passing rod or the second wire passing rod is connected with a grounding wire through a fastener.
6. The wire bonding machine of claim 4 wherein: the wire passing rods are two and comprise a first wire passing rod and a second wire passing rod, the first wire passing rod and the second wire passing rod are connected with a grounding wire through fasteners, and the welding wires are respectively wound on the first wire passing rod and the second wire passing rod.
7. A clip-free wire bonding machine according to any of claims 3-6 wherein: the device further comprises mounting blocks, two mounting blocks are arranged on the mounting plate, the first wire passing rod and the second wire passing rod are respectively inserted on the mounting blocks, fixing holes are further formed in the mounting blocks, and fixing pieces penetrate through the fixing holes to fix the wire passing rods.
8. The wire bonding machine of claim 7 wherein: the device further includes a shield for covering the coil mount and the first wire passing pole within the cage.
9. The wire bonding machine of claim 8 wherein: the protective cover is provided with an avoidance hole, the avoidance hole corresponds to the wire feeding path of the welding wire, and the welding wire is prevented from touching the protective cover.
10. A wire bonding machine with no wire tail as claimed in claim 8 or 9 wherein: the utility model discloses a protection casing, including the protection casing, protection casing one side is connected with the mounting panel through the upset subassembly, the upset subassembly includes upset base, upset axle mount pad, upset axle and connecting block, upset base one end with the mounting panel is fixed, the other end with the upset axle mount pad is fixed, be equipped with the open slot on the upset axle mount pad, the upset axle sets up in the open slot, its both ends wear to establish respectively in the upset axle mount pad, the connecting block cover is established on the upset axle and with the protection casing is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111367699.1A CN116135419A (en) | 2021-11-18 | 2021-11-18 | Welding method for welding wire clamping-free wire tail of wire welding machine and wire welding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111367699.1A CN116135419A (en) | 2021-11-18 | 2021-11-18 | Welding method for welding wire clamping-free wire tail of wire welding machine and wire welding machine |
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| Publication Number | Publication Date |
|---|---|
| CN116135419A true CN116135419A (en) | 2023-05-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111367699.1A Pending CN116135419A (en) | 2021-11-18 | 2021-11-18 | Welding method for welding wire clamping-free wire tail of wire welding machine and wire welding machine |
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| CN (1) | CN116135419A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101383304A (en) * | 2008-10-17 | 2009-03-11 | 深圳市晶导电子有限公司 | Slot type MOSFET and manufacturing method thereof |
| CN101522356A (en) * | 2006-11-09 | 2009-09-02 | 库利克和索夫工业公司 | Wire feed system for a wire bonding machine and configured to apply a variable tension to the wire |
| CN104043918A (en) * | 2014-03-07 | 2014-09-17 | 江门市壹科光电设备有限公司 | Wire clamp device used for wire bonding and wire bonding method by using wire clamp device |
| CN204497195U (en) * | 2015-02-04 | 2015-07-22 | 武汉芯茂半导体科技有限公司 | A kind of IC sealing linkage device |
| US20150231727A1 (en) * | 2012-10-04 | 2015-08-20 | Sung Gu Oh | Non-consumable electrode welding system and welding method thereof |
-
2021
- 2021-11-18 CN CN202111367699.1A patent/CN116135419A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101522356A (en) * | 2006-11-09 | 2009-09-02 | 库利克和索夫工业公司 | Wire feed system for a wire bonding machine and configured to apply a variable tension to the wire |
| CN101383304A (en) * | 2008-10-17 | 2009-03-11 | 深圳市晶导电子有限公司 | Slot type MOSFET and manufacturing method thereof |
| US20150231727A1 (en) * | 2012-10-04 | 2015-08-20 | Sung Gu Oh | Non-consumable electrode welding system and welding method thereof |
| CN104043918A (en) * | 2014-03-07 | 2014-09-17 | 江门市壹科光电设备有限公司 | Wire clamp device used for wire bonding and wire bonding method by using wire clamp device |
| CN204497195U (en) * | 2015-02-04 | 2015-07-22 | 武汉芯茂半导体科技有限公司 | A kind of IC sealing linkage device |
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