CN217983279U - Threading device and lead bonding instrument - Google Patents
Threading device and lead bonding instrument Download PDFInfo
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- CN217983279U CN217983279U CN202221531658.1U CN202221531658U CN217983279U CN 217983279 U CN217983279 U CN 217983279U CN 202221531658 U CN202221531658 U CN 202221531658U CN 217983279 U CN217983279 U CN 217983279U
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- riving knife
- lead
- air flow
- airflow
- threading
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/74—Apparatus for manufacturing arrangements for connecting or disconnecting semiconductor or solid-state bodies and for methods related thereto
- H01L2224/78—Apparatus for connecting with wire connectors
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Abstract
The utility model relates to a semiconductor package technical field specifically discloses a wear to draw device and lead bonding appearance, wears to draw the device and includes the barrel holder, and the barrel holder is including being used for the passageway that is linked together with the cleaver is inside, and the path connection has the airflow generator who is arranged in forming the traction air current in the cleaver is inside, and the flow direction of traction air current is from the direction of cleaver to the passageway. The cylinder frame is combined with the airflow generator to form a traction airflow flowing from the riving knife to the channel direction in the riving knife, so that the lead positioned at the inlet of the riving knife or the lead broken in the riving knife can move to the mouth direction of the riving knife under the action of the traction airflow, and the threading is finished or the lead fragment is moved out of the riving knife. The device simple structure effectively reduces the degree of difficulty of threading operation, improves threading efficiency, leads to stifled effectual simultaneously, can lead out the broken lead wire fragment of fracture in the internal portion of chopper completely, ensures can not remain the broken lead wire fragment.
Description
Technical Field
The utility model relates to a semiconductor package technical field especially relates to a threading device and lead bonding appearance.
Background
In semiconductor packages where the connection of the chip to the lead frame (or substrate) provides electrical connections for power and signal distribution, wire bonding is the process of connecting the corresponding portion of the chip to the lead frame (or substrate) with very thin wires (hereinafter "wires"), also known as pressure bonding.
The problem of wire breakage is easily caused in the wire bonding process because the wire is thin and soft. In the prior art, after a lead is broken, an operator can only manually penetrate the lead into the riving knife and expose the lead out of the mouth of the riving knife to complete the operation of penetrating the lead into the riving knife, and then the bonding operation can be continued. In the actual operation process, the following four steps are needed to complete one threading: 1) Clamping a lead; 2) Straightening the end of the lead wire to form a linear section of sufficient length; 3) Aligning the wire end with the center of the interior of the riving knife;
4) The lead ends are passed through the interior of the riving knife and exposed through the mouth of the riving knife. However, on one hand, since the lead material itself is soft, it is difficult to form a straight line segment with a long enough end for threading, on the other hand, the diameter of the lead is small, usually tens of micrometers, which is difficult to control finely, and in addition, the inner diameter of the cleaver is also small, which results in that the threading operation is difficult to be performed smoothly, the threading difficulty is high, and the threading efficiency is low.
In addition, the lead wire can be broken in the cleaver, and because the aperture inside the cleaver is too small, the lead wire is blown out by directly adopting tools such as a conventional ear washing ball or an air gun, the blockage passing effect is poor, broken sections of the lead wire are easy to remain, and the service life of the cleaver can be shortened.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to existing technical current situation, provide an it wears to draw device and lead wire bonding appearance, the utility model discloses an it wears to draw device simple structure, and it is easier that the lead wire wears to draw and the chopper leads to stifled, and efficiency is higher.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
in one aspect, the utility model provides a threading device, including the barrel holder, the barrel holder is including being used for the passageway that is linked together with the chopper is inside, the access connection has the airflow generator that is arranged in the chopper is inside to form the traction air current, the flow direction of traction air current is from the chopper to the direction of passageway.
Preferably, the flow generator is an inhalation unit.
Preferably, the barrel frame is provided with an airflow through hole in a penetrating manner, and the airflow through hole is respectively communicated with the channel and the airflow generator.
Preferably, the airflow through holes are formed in the side wall of the barrel frame and are arranged in the vertical direction of the axis of the channel, the channel is sequentially provided with a first opening communicated with the inside of the riving knife and a second opening used for allowing external airflow to enter the channel in the direction away from the riving knife, and the airflow through holes are formed between the first opening and the second opening.
Preferably, the first opening is provided with an insertion end for the riving knife to be inserted into, and the inner diameter of the insertion end is larger than or equal to the outer diameter of the riving knife.
Preferably, the number of the air flow through holes is even, and each air flow through hole is arranged in central symmetry.
Preferably, each of said air flow openings is in communication with the same air flow generator.
On the other hand, the utility model also provides a wire bonding appearance, including chopper and foretell threading device, the barrel holder can be dismantled and cup jointed in the mouth of chopper.
Furthermore, the utility model discloses still provide the application method of above-mentioned threading device, include following step:
s1, inserting a mouth of a riving knife into a channel;
s2, starting an airflow generator to enable traction airflow to be formed inside the riving knife;
and S3, moving the end part of the lead wire to one end, far away from the mouth, in the riving knife, and keeping the air flow generator running so that the end part of the lead wire is brought into the riving knife by the traction air flow and passes through the mouth of the riving knife.
Furthermore, the utility model discloses still provide another application method of above-mentioned threading device, include following step:
s10, inserting a mouth of the cleaver to be blocked into the channel;
s20, starting an airflow generator to enable traction airflow to be formed inside the riving knife;
s30, the air flow generator is kept running, so that the broken lead wire inside the riving knife is brought out of the riving knife by the traction air flow.
The beneficial effects of the utility model reside in that:
the utility model discloses in, adopt the barrel holder to combine together with airflow generator to the messenger forms in the chopper is inside from the chopper to the air current that pulls that the passageway direction flows, from this, the lead wire that is located the inside entrance of chopper or the lead wire of fracture in the chopper inside can remove to the mouth direction of chopper under the effect of pulling the air current, and then accomplish to wear to draw or shift out outside the chopper. The device simple structure effectively reduces the degree of difficulty of threading operation, improves threading efficiency, can effectively solve the problem that the lead wire fracture is difficult to get rid of in the chopper simultaneously, leads to stifled effectual, can lead to the broken segment of the lead wire of fracture inside the chopper completely to be derived, ensures can not remain the broken segment of lead wire, avoids leading to stifled problem that causes the chopper life shortens among the prior art because of leading to.
Drawings
Fig. 1 is a schematic structural view of the threading device and the riving knife of the present invention.
Fig. 2 is a schematic structural view of the threading device and the riving knife at another viewing angle according to the present invention.
Fig. 3 is a schematic view of the threading device according to the present invention in use.
Fig. 4 is a schematic view of the principle of the lead force applied when the threading device of the present invention is in use.
Fig. 5 is a schematic view of the flowing direction of the traction air flow and the stopping air flow when the lead is threaded by the threading device of the present invention.
Fig. 6 is a cross-sectional view of the threading device of the present invention after threading.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings and embodiments:
referring to fig. 1-3, the utility model discloses a wire bonding instrument, including the chopper 1 and wear to draw the device, wear to draw the device to include the barrel holder 2, the barrel holder 2 can be dismantled and cup joint in the mouth 12 of chopper 1, the barrel holder 2 is including being used for the passageway 3 that is linked together with the internal portion of chopper 1, passageway 3 is connected with and is used for forming the airflow generator (not shown) that pulls the air current in the internal portion of chopper 1, the flow direction that pulls the air current is from the direction of chopper 1 to passageway 3.
When the threading device is used for threading a lead, the use method of the threading device comprises the following steps:
s1, inserting a mouth part 12 of a riving knife 1 into a channel 3;
s2, starting the airflow generator to enable the riving knife 1 to form traction airflow;
s3, slightly straightening the end part of the lead wire 7 to enable the end part of the lead wire 7 to have a small segment with a small arc, then moving the end part of the lead wire 7 to one end (hereinafter referred to as an inlet 11) far away from the mouth inside the riving knife 1, and keeping the air flow generator running to enable the end part of the lead wire to be brought into the riving knife 1 by the traction air flow and enable the end part of the lead wire 7 to penetrate through the mouth 12 of the riving knife 1.
Referring to fig. 3 and 4, in use, the barrel frame 2 is sleeved on the mouth 12 of the riving knife 1, the airflow generator is started, so that a traction airflow flowing from the riving knife 1 to the channel 3 is formed in the channel 3, because the interior of the riving knife 1 is communicated with the channel 3, the traction airflow flowing to the channel 3 is also formed in the interior of the riving knife 1, according to the airflow continuity theorem in aerodynamics, the airflow flowing area is increased at the inlet 11, the traction airflow is dispersed in a funnel shape, the air flow rate is smaller when the traction airflow is closer to the exterior, the traction airflow is influenced by the airflow, the airflow at the inner side of the inlet 11 is faster, the airflow at the outer side is slower, the air pressure difference is formed at the two sides in the radial direction of the inlet 11, and pressure (as shown by P1 and P2 in fig. 4) is formed, and the pressure can drive the end of the lead 7 to approach to the axial center direction of the inlet 11, friction force (shown as F1 and F2 in FIG. 4) parallel to the surface of the lead 7 is also formed between the traction air flow and the surface of the end of the lead 7, the friction force can drive the end of the lead 7 to approach the inside of the riving knife 1, the embodiment uses pressure and friction force as traction force, the closer the end of the lead 7 is to the inlet 11, the higher the pressure and friction force on the end of the lead 7 are, when the end of the lead 7 approaches the inlet 11, the lead 7 is influenced by the pressure and friction force of the traction air flow and is drawn inwards, the traction air flow pulls the end of the lead 7 to flow into the riving knife 1 along with the traction air flow through the inlet 11, when the end of the lead 7 falls into the riving knife 1, because the air flows at two sides are the same, the pressures P1 and P2 are balanced, only the friction force parallel to the surface of the lead 7 remains, the end of the lead 7 is pulled to move downwards, the lead 7 is pulled to move towards the mouth 12 of the riving knife 1, and passes through the mouth 12 of the riving knife 1 to enter the channel 3, after the threading is finished, the airflow generator is closed, the barrel frame 2 is taken down, and the excessive lead 7 at the mouth 12 of the riving knife 1 is removed, so that the pressure welding operation can be carried out.
In the prior art, require lead wire end to have longer straightway, the utility model discloses a threading device is owing to utilize and is drawing the air current to reach the principle that lead wire 7 automatic threading, lead wire 7 end only need have a segment far short than the less line segment of the radian of above-mentioned straightway can, because of the line segment is shorter and do not require to be sharp line segment completely, lead wire 7 end reaches the threading condition more easily, in addition, in prior art, it is longer with the time that wears to draw, the utility model discloses a threading device need not the manual work and aligns lead wire 7 end and 1 inside center of cleaver completely when aiming at, aiming at and requiring greatly reduced, has reduced the step of manual threading in addition, effectively reduces the degree of difficulty of threading operation from this to make the time that whole process of threading consumes shorten greatly, generally speaking, among the prior art, even be a skilled threading operating personnel, need only accomplish once and lead also need 1 ~ 2min before getting rid of threading, and utilize the threading device to accomplish only need only about 30s threading, can save 50% ~ s time 75%.
The utility model discloses not only can effectively solve the threading operation problem between lead wire 7 and the chopper 1, still can effectively solve the problem that the fracture of lead wire 7 is difficult to get rid of in chopper 1.
When the threading device is used for plugging, the use method of the threading device comprises the following steps:
s10, inserting a mouth of the cleaver to be blocked into the channel;
s20, starting an airflow generator to enable the interior of the riving knife to form a threading airflow;
s30, the air flow generator is kept running, so that the lead broken in the riving knife is taken out of the riving knife by the lead passing air flow.
When the lead wire 7 is broken in the internal part of the riving knife 1, the cylinder frame 2 is sleeved on the mouth part 12 of the riving knife 1, the airflow generator is started, the lead wire 7 broken in the internal part of the riving knife 1 is influenced by the traction airflow and can be subjected to inward force, and the broken lead wire 7 can move out through the mouth part 12 of the riving knife 1 along with the traction airflow.
The utility model discloses a wear to draw device can high-efficient accomplish logical stifled of chopper 1, when lead wire 7 fracture in chopper 1, use earlier to wear to draw the device and go on leading through stifled, wear to draw afterwards, can carry out normal production operation, compare in prior art, use the utility model discloses a wear to draw the device can accomplish faster and lead through stifled and wear to draw the flow, faster normal production operation that resumes.
The utility model discloses in, adopt the creel 2 to combine together with airflow generator to make and form in 1 inside of chopper from 1 to the 3 direction flows of passageway of pulling the air current, from this, lead wire 7 or the fracture lead wire 7 in 1 inside of chopper 1 that is located 1 inside entry 11 department of chopper can be in order to pull under the effect of air current and remove to 12 directions of the mouth of chopper 1, and then accomplish and wear to draw or shift out outside the chopper 1. The device simple structure effectively reduces the degree of difficulty of threading operation, improves threading efficiency, can effectively solve the problem that 7 fracture lead wires are difficult to get rid of in the chopper 1 simultaneously, leads to stifled effectual, can lead to the broken piece of lead wire inside the chopper 1 with the fracture and derive completely, ensures can not remain the broken piece of lead wire, avoids leading to the problem that the chopper life that causes shortens because of leading to stifled among the prior art.
The airflow generator is an air suction unit, when the airflow generator is used, the channel 3 is connected with an air suction port of the air suction unit, the air suction unit is started, air in the channel 3 is sucked, traction airflow flowing from the riving knife 1 to the channel 3 is formed in the channel 3, negative pressure is formed, and the traction airflow flowing to the direction of the mouth 12 of the riving knife 1 is also formed in the riving knife 1 communicated with the channel 3.
The utility model discloses a when threading device is applied to the lead bonding appearance, still can locate lead bonding appearance's main part with the mount 2 through movable support on, movable support is including the mount that is used for fixed mount 2, and the mount is connected with the swinging boom that can follow the horizontal direction rotation, and when needs use the threading device, with the position of mount 2 rotation to 1 below of chopper, the chopper 1 moves down and makes both be connected, and the back that finishes using, the mount 2 resets, and is rotatory to the side.
An airflow through hole 4 is arranged on the barrel frame 2 in a penetrating way, and the airflow through hole 4 is respectively communicated with the channel 3 and the airflow generator.
The airflow through holes 4 can be arranged at one end of the barrel frame 2 far away from the riving knife 1 or on the side wall of the barrel frame 2, when the airflow through holes 4 are arranged on the side wall, the number of the airflow through holes 4 is preferably even, and each airflow through hole 4 is arranged in central symmetry.
Referring to fig. 5 to 6, the airflow through hole 4 is disposed on the sidewall of the barrel frame 2, the airflow through hole 4 is disposed along the vertical direction of the axis of the channel 3, the channel 3 is sequentially provided with a first opening 5 communicating with the inside of the riving knife 1 and a second opening 6 for allowing external airflow to enter the channel along the direction away from the riving knife 1, and the airflow through hole 4 is disposed between the first opening 5 and the second opening 6.
Referring to fig. 5, after the air suction unit is started, air in the channel 3 is sucked, because the air flow through hole 4 is located between the first opening 5 and the second opening 6, two air flows in opposite directions are formed at the first opening 5 and the second opening 6, wherein a pulling air flow with an air flow direction facing downward is formed at the first opening 5, and a stop air flow with an air flow direction facing upward is formed at the second opening 6, when the air suction unit is started, the end portion of the lead 7 is located at the inlet of the chopper 1, the lead 7 is pulled into the chopper 1 under the action of the pulling air flow, if the lead 7 falls out of the barrel frame 2 at an excessively high speed, the end portion of the lead 7 flows back into the channel 3 or remains the original state under the action of the stop air flow, and does not fall any more, thereby effectively avoiding the problem that the lead 7 to be trimmed is increased due to an excessive line segment of the lead 7 exposed out of the mouth 12 of the chopper 1, and avoiding material waste.
The utility model discloses an air current generator and be provided with mutually supporting between the barrel holder 2 of first opening 5, second opening 6 and air current through-hole 4 for can form opposite direction's traction air current and end a position air current in the barrel holder 2, lead wire 7 accomplishes the threading under the threading effect of traction air current, and leaves in passageway 3 under the effect of ending a position air current, and it is extravagant to improve the reduction material when threading simple and easy degree and threading efficiency.
The first opening 5 is provided with an insertion end for inserting the riving knife 1, and the inner diameter of the insertion end is larger than or equal to the outer diameter of the riving knife 1.
The inserting end is provided with a protection ring sleeve for protecting the outer wall of the riving knife 1, the protection ring sleeve can be made of rubber or silica gel and the like, and the phenomenon that the riving knife 1 is damaged due to scraping when the barrel frame 2 is sleeved on the riving knife 1 is prevented.
Referring to fig. 3 and 5, the number of the air flow holes 4 is even, and each of the air flow holes 4 is arranged in a central symmetry manner, so as to form equal and opposite air flows in the channel 3.
In a preferred embodiment, each airflow through hole 4 is connected with an airflow generator, and each airflow through hole 4 is communicated with the same airflow generator, so as to be more beneficial to forming equal and reverse airflow in the channel 3, and reduce the equipment cost.
Of course, the above illustration is only a preferred embodiment of the present invention, and the scope of the present invention is not limited thereto, so all equivalent changes made in the principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The threading device is characterized by comprising a barrel frame, wherein the barrel frame comprises a channel communicated with the interior of a riving knife, the channel is connected with an airflow generator used for forming traction airflow in the interior of the riving knife, and the flowing direction of the traction airflow is from the riving knife to the channel.
2. The threading device according to claim 1, characterized in that said flow generator is an aspiration unit.
3. The threading device according to claim 2, wherein an air flow hole is formed through said barrel frame, said air flow hole being respectively communicated with said channel and said air flow generator.
4. The threading device according to claim 3, wherein the air flow through hole is formed in a side wall of the barrel frame, the air flow through hole is arranged in a direction perpendicular to an axis of the channel, the channel is sequentially provided with a first opening communicated with the inside of the chopper and a second opening for allowing outside air to enter the channel in a direction away from the chopper, and the air flow through hole is formed between the first opening and the second opening.
5. The threading device of claim 4, wherein the first opening is provided with an insertion end into which the riving knife is inserted, and the insertion end has an inner diameter greater than or equal to an outer diameter of the riving knife.
6. The lead-trough device according to claim 4, characterized in that the number of said air flow holes is even and each air flow hole is arranged in central symmetry.
7. The lead-trough device according to claim 6, wherein each of said air flow holes is in communication with a same air flow generator.
8. A wire bonding instrument, comprising a cleaver and the threading device according to any one of claims 1 to 7, wherein the barrel holder is detachably sleeved on a mouth of the cleaver.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221531658.1U CN217983279U (en) | 2022-06-17 | 2022-06-17 | Threading device and lead bonding instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221531658.1U CN217983279U (en) | 2022-06-17 | 2022-06-17 | Threading device and lead bonding instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217983279U true CN217983279U (en) | 2022-12-06 |
Family
ID=84274637
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221531658.1U Active CN217983279U (en) | 2022-06-17 | 2022-06-17 | Threading device and lead bonding instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217983279U (en) |
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2022
- 2022-06-17 CN CN202221531658.1U patent/CN217983279U/en active Active
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