CN215919404U - Multi-wire-groove riving knife capable of improving riving knife bonding efficiency - Google Patents
Multi-wire-groove riving knife capable of improving riving knife bonding efficiency Download PDFInfo
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- CN215919404U CN215919404U CN202122559584.4U CN202122559584U CN215919404U CN 215919404 U CN215919404 U CN 215919404U CN 202122559584 U CN202122559584 U CN 202122559584U CN 215919404 U CN215919404 U CN 215919404U
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- riving knife
- wire
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- groove
- opening
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- 235000014820 Galium aparine Nutrition 0.000 claims abstract description 30
- 240000005702 Galium aparine Species 0.000 claims abstract description 30
- 230000000149 penetrating effect Effects 0.000 claims abstract description 6
- 239000013013 elastic material Substances 0.000 claims description 8
- -1 polytetrafluoroethylene Polymers 0.000 claims description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 3
- 239000004065 semiconductor Substances 0.000 abstract description 2
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 9
- 238000003466 welding Methods 0.000 description 4
- 239000000919 ceramic Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000004377 microelectronic Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002052 molecular layer Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000012858 resilient material Substances 0.000 description 1
- MTPVUVINMAGMJL-UHFFFAOYSA-N trimethyl(1,1,2,2,2-pentafluoroethyl)silane Chemical compound C[Si](C)(C)C(F)(F)C(F)(F)F MTPVUVINMAGMJL-UHFFFAOYSA-N 0.000 description 1
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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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- Wire Bonding (AREA)
Abstract
The utility model relates to the technical field of semiconductors, in particular to a multi-wire-groove cleaver capable of improving the bonding efficiency of the cleaver, which comprises a cleaver handle and a cleaver tool bit fixedly connected with the cleaver handle, wherein the end part of the cleaver tool bit comprises a first free end and a second free end, and the section height of the first free end is lower than that of the second free end; the side surface of the riving knife head is obliquely provided with at least two through holes, and the through holes penetrate through to the first free end of the riving knife head; at least two wire grooves are formed in the second free end, the wire grooves correspond to the through holes one to one, and the wire grooves and the corresponding through holes jointly form a channel for penetrating through the lead. The multi-wire-groove riving knife provided by the utility model is reasonable in structural design, when the multi-wire-groove riving knife is used for bonding, a plurality of leads respectively pass through the through hole and the corresponding wire grooves, and the multi-wire-groove riving knife carries the plurality of leads to be bonded to a target position, so that the bonding of the plurality of leads can be completed at one time, and the bonding efficiency is improved.
Description
Technical Field
The utility model relates to the technical field of semiconductors, in particular to a multi-wire-groove cleaver capable of improving the bonding efficiency of the cleaver.
Background
In the field of microelectronic packaging, wire bonding is commonly used for electrical interconnection between integrated circuit chips and between an integrated circuit chip and a peripheral circuit, and wedge bonding is one of the commonly used wire bonding methods. Wedge cleavers are important tools for wedge bonding, and the performance of wedge cleavers determines the quality, efficiency and economy of bonding.
The structure of a conventional wedge-shaped riving knife is shown in fig. 4, the wedge-shaped riving knife generally comprises a riving knife handle 01 and a riving knife head 02, the riving knife handle 01 can be connected to one end of a mechanical arm, and the riving knife handle 01 is pulled to move by the mechanical arm. Referring to the local enlarged schematic view, the riving knife head 02 is of a wedge-shaped structure, the wire groove 03 is formed in the bottom end of the riving knife head 02, the through hole 04 is formed in the riving knife handle 01 in the vertical direction, and the through hole 04 penetrates through the wire groove 03. When the lead wire welding device is used, the lead wire penetrates through the wire groove 03 through the through hole 04, the lead wire is pressed on the pressure welding area through the cleaver, mechanical friction is generated between the surfaces of metals to be welded under the condition of pressurization, and the lead wire and a chip contact surface molecular layer are fused, so that welding connection is realized.
Because a plurality of leads are required to be arranged between the integrated circuit chips and between the chips and the peripheral circuit, the area of the integrated circuit is limited to be small, and the bonding of the plurality of leads is usually completed by only adopting one wedge-shaped chopper. However, since the end of the conventional riving knife head only has one wire groove 03, only one wire can be fixed in each action, resulting in low bonding efficiency.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the problems in the prior art and provide a multi-wire groove riving knife capable of improving the bonding efficiency of the riving knife.
In order to achieve the technical purpose and achieve the technical effect, the utility model is realized by the following technical scheme:
the utility model provides a multi-line-groove riving knife capable of improving the bonding efficiency of the riving knife, which comprises a riving knife handle and a riving knife head fixedly connected with the riving knife handle, wherein the end part of the riving knife head comprises a first free end and a second free end, and the section height of the first free end is lower than that of the second free end; at least two through holes are obliquely formed in the side surface of the riving knife head, and the through holes penetrate through to the first free end of the riving knife head; at least two wire grooves are formed in the second free end, the wire grooves correspond to the through holes one to one, and the wire grooves and the corresponding through holes jointly form a channel for penetrating through a lead.
Further, in the multi-groove riving knife capable of improving the riving knife bonding efficiency, the through hole penetrates from a first opening formed in the side surface of the riving knife head to a second opening formed in the first free end, and the diameter of the first opening is larger than that of the second opening.
Further, in the multi-groove riving knife capable of improving the bonding efficiency of the riving knife, the through hole includes a first section of through hole which penetrates from a first opening formed in the side surface of the riving knife head to a third opening formed in the first free end, and a second section of through hole which penetrates from the third opening to the second opening, the section diameter of the first section of through hole gradually decreases from the first opening to the third opening, and the section diameters of the second section of through hole are equal.
Further, in the multi-line groove riving knife capable of improving the riving knife bonding efficiency, the inner wall of the through hole is provided with an elastic material.
Further, in the multi-line groove riving knife capable of improving the riving knife bonding efficiency, the elastic material is polytetrafluoroethylene.
Further, in the multi-line-slot riving knife capable of improving the riving knife bonding efficiency, the line slot is of a slot structure with an opening at the bottom end, and the cross section of the line slot is in one of a rectangular slot, a V-shaped slot, a trapezoidal slot and a parabolic slot.
Further, in the multi-line-slot riving knife capable of improving the bonding efficiency of the riving knife, a plane formed by the central line of the line slot and the central line of the through hole corresponding to the line slot is parallel to the central line of the knife head of the riving knife.
Further, in the multi-line slot riving knife capable of improving the riving knife bonding efficiency, an arc-shaped bridge is arranged at the position where the first free end is connected with the second free end.
The utility model has the beneficial effects that:
the multi-wire-groove riving knife provided by the utility model is reasonable in structural design, when the multi-wire-groove riving knife is used for bonding, a plurality of leads respectively pass through the through hole and the corresponding wire grooves, and the multi-wire-groove riving knife carries the plurality of leads to be bonded to a target position, so that the bonding of the plurality of leads can be completed at one time, and the bonding efficiency is improved. In addition, the distance between each lead is controlled by the distance between the wire grooves so as to meet the actual requirement.
Of course, it is not necessary for any one product that embodies the utility model to achieve all of the above advantages simultaneously.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic view of a wedge-shaped riving knife of the present invention;
FIG. 2 is a schematic view of the structure of the cleaver head at one angle in the present invention;
FIG. 3 is a schematic view of another angle configuration of the riving knife head of the present invention;
FIG. 4 is a schematic structural diagram of a wedge-shaped riving knife in the prior art;
in the drawings, the components represented by the respective reference numerals are listed below:
1-cleaver handle, 2-cleaver head, 21-first free end, 22-second free end, 3-through hole, 31-first opening, 32-second opening, 33-third opening, 4-wire groove and 5-arc bridge.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present invention.
Referring to fig. 1-3, the present embodiment provides a multi-groove riving knife capable of improving the bonding efficiency of the riving knife, which includes a riving knife handle 1 and a riving knife head 2 fixedly connected to the handle. The connecting mode between the cleaver handle 1 and the cleaver tool bit 2 can be welding, and can also be other connecting modes, and the application is not specifically limited. The cleaver handle 1 is used for being clamped by a clamping device, such as a free end of a robot, and the cleaver is pulled to move by the clamping device. The riving knife bit 2 is used to pierce and bond a wire at a target location.
In this embodiment, the material used for the cleaver 1 is one of tungsten carbide and ceramic. The material used by the cleaver head 2 is one of tungsten carbide, titanium carbide and ceramics.
In this embodiment, the end of the riving knife head 2 includes a first free end 21 and a second free end 22, the first free end 21 having a lower cross-sectional height than the second free end 22; at least two through holes 3 are obliquely formed in the side surface of the riving knife head 2, and the through holes 3 penetrate through to the first free end 21 of the riving knife head 2; at least two wire grooves 4 are formed in the second free end 22, the wire grooves 4 correspond to the through holes 3 one by one, and a channel formed by the wire grooves 4 and the corresponding through holes is used for penetrating through a lead. The lead wire passes through the through hole 3 from one side corresponding to the first free end 21 and then is guided into the position where the wire casing 4 is located, and the wire casing 4 plays a role in fixing and guiding the lead wire.
Optionally, the wire casing 4 is a groove-shaped structure with an opening at the bottom end, and the cross-sectional shape of the wire casing 4 is one of a rectangular groove, a V-shaped groove, a trapezoidal groove and a parabolic groove.
Because the cleaver provided by the application is a multi-line-slot cleaver, in order to ensure that all the line slots are not influenced mutually, in an achievable mode, a plane formed by the central line of each line slot 4 and the central line of the corresponding through hole 3 is parallel to the central line of the cleaver tool bit 2.
Set up arc bridge 5 in the position that first free end 21 and second free end 22 meet, the lead wire laminating is on the surface of arc bridge 5 when passing through the position that first free end 21 meets with second free end 22 to reduce the degree of buckling of lead wire, prevent that the lead wire from leading to the damage because the degree of buckling is too big.
The through hole 3 extends from a first opening 31 formed in a side surface of the riving knife head 2 to a second opening 32 formed in the first free end 21, and the diameter of the first opening 31 is larger than that of the second opening 32.
In an implementable manner, the through hole 3 includes a first section of through hole penetrating from the first opening 31 to the third opening 33, and a second section of through hole penetrating from the third opening 33 to the second opening 32, the cross-sectional diameter of the first section of through hole gradually decreases from the first opening 31 to the third opening 33, and the cross-sectional diameter of the second section of through hole does not change. The first section of through hole is similar to a horn shape, and the diameter of the opening is larger, so that the lead can conveniently pass through the first opening 31 to be led in. The diameter of the second section of through hole is slightly larger than that of the lead. After the lead passes through the second section of through hole, the lead is limited in a smaller space of the second section of through hole, so that the second section of through hole plays a role in fixing the lead to a certain extent.
Further, the inner wall of the through-hole 3 is provided with an elastic material. On one hand, the lead is attached to the inner wall of the through hole 3 under the action of traction force and is in direct contact with the elastic material on the inner wall, so that damage is prevented; on the other hand, after the lead passes through the second section of the through hole, the position of the lead is relatively fixed due to the extrusion of the elastic material.
Optionally, the resilient material is polytetrafluoroethylene. In addition, other elastic materials may be used, and the present application is not limited to the specific examples.
According to the above technical solution, an embodiment of the present application provides a multi-line slot chopper, including: the cleaver comprises a cleaver handle 1 and a cleaver tool bit 2 fixedly connected with the cleaver handle 1. The end of the riving knife head 2 includes a first free end 21 and a second free end 22, the first free end 21 having a cross-sectional height that is less than the cross-sectional height of the second free end 22; at least two through holes 3 are obliquely formed in the side surface of the riving knife head 2, and the through holes 3 penetrate through to the first free end 21 of the riving knife head 2; the second free end 22 is provided with at least two wire grooves 4, and the wire grooves 4 correspond to the through holes 3 one by one. When the multi-wire-groove riving knife provided by the application is used for bonding, a plurality of leads respectively pass through the through hole 3 and the corresponding wire grooves 4, and the multi-wire-groove riving knife carries a plurality of leads to be bonded to a target position, namely, the bonding of the plurality of leads can be completed at one time, so that the bonding efficiency is improved. In addition, the distance between each lead is controlled by the distance between the wire grooves 4, so as to meet the actual requirement.
The preferred embodiments of the present invention disclosed above are intended to facilitate the explanation of the present invention only. The preferred embodiments are not exhaustive and do not limit the utility model to the precise embodiments. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, to thereby enable others skilled in the art to best utilize the utility model. The utility model is limited only by the claims and their full scope and equivalents.
Claims (8)
1. The utility model provides a can improve multi-wire groove riving knife of riving knife bonding efficiency which characterized in that: the cleaver comprises a cleaver handle and a cleaver tool bit fixedly connected with the cleaver handle, wherein the end part of the cleaver tool bit comprises a first free end and a second free end, and the section height of the first free end is lower than that of the second free end; at least two through holes are obliquely formed in the side surface of the riving knife head, and the through holes penetrate through to the first free end of the riving knife head; at least two wire grooves are formed in the second free end, the wire grooves correspond to the through holes one to one, and the wire grooves and the corresponding through holes jointly form a channel for penetrating through a lead.
2. The multi-wire slot riving knife capable of improving the riving knife bonding efficiency of claim 1 wherein: the through hole penetrates from a first opening formed in the side face of the riving knife head to a second opening formed in the first free end, and the diameter of the first opening is larger than that of the second opening.
3. The multi-wire slot riving knife of claim 2 capable of improving the riving knife bonding efficiency further comprising: the through hole comprises a first section of through hole which penetrates from a first opening formed in the side face of the riving knife head to a third opening formed in the first free end and a second section of through hole which penetrates from the third opening to the second opening, the section diameter of the first section of through hole is gradually reduced from the first opening to the third opening, and the section diameters of all the parts of the second section of through hole are equal.
4. The multi-wire slot riving knife of claim 3 capable of improving the riving knife bonding efficiency further comprising: and the inner wall of the through hole is provided with an elastic material.
5. The multi-wire slot riving knife of claim 4 capable of improving the riving knife bonding efficiency further comprising: the elastic material is polytetrafluoroethylene.
6. The multi-wire slot riving knife capable of improving the riving knife bonding efficiency of claim 1 wherein: the wire casing is a groove-shaped structure with an opening at the bottom end, and the cross section of the wire casing is in the shape of one of a rectangular groove, a V-shaped groove, a trapezoidal groove and a parabolic groove.
7. The multi-wire slot riving knife capable of improving the riving knife bonding efficiency of claim 1 wherein: a plane formed by the central line of the wire groove and the central line of the through hole corresponding to the wire groove is parallel to the central line of the cutter head of the riving knife.
8. The multi-wire slot riving knife capable of improving the riving knife bonding efficiency of claim 1 wherein: and an arc-shaped bridge is arranged at the position where the first free end is connected with the second free end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122559584.4U CN215919404U (en) | 2021-10-22 | 2021-10-22 | Multi-wire-groove riving knife capable of improving riving knife bonding efficiency |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122559584.4U CN215919404U (en) | 2021-10-22 | 2021-10-22 | Multi-wire-groove riving knife capable of improving riving knife bonding efficiency |
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| Publication Number | Publication Date |
|---|---|
| CN215919404U true CN215919404U (en) | 2022-03-01 |
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| CN202122559584.4U Active CN215919404U (en) | 2021-10-22 | 2021-10-22 | Multi-wire-groove riving knife capable of improving riving knife bonding efficiency |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116000511A (en) * | 2022-12-26 | 2023-04-25 | 深圳市海志亿半导体工具有限公司 | Cutter head for enhancing fine-pitch wire feeding forming effect |
| CN116053151A (en) * | 2022-12-26 | 2023-05-02 | 深圳市海志亿半导体工具有限公司 | Wedge-shaped riving knife with side incoming line |
| CN118386042A (en) * | 2024-05-30 | 2024-07-26 | 申玥蔻西摩半导体(湖州)有限公司 | A splitter grinding device |
-
2021
- 2021-10-22 CN CN202122559584.4U patent/CN215919404U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116000511A (en) * | 2022-12-26 | 2023-04-25 | 深圳市海志亿半导体工具有限公司 | Cutter head for enhancing fine-pitch wire feeding forming effect |
| CN116053151A (en) * | 2022-12-26 | 2023-05-02 | 深圳市海志亿半导体工具有限公司 | Wedge-shaped riving knife with side incoming line |
| CN116000511B (en) * | 2022-12-26 | 2024-04-09 | 深圳市海志亿半导体工具有限公司 | Cutter head for enhancing fine-pitch wire feeding forming effect |
| CN116053151B (en) * | 2022-12-26 | 2024-04-09 | 深圳市海志亿半导体工具有限公司 | Wedge-shaped riving knife with side incoming line |
| CN118386042A (en) * | 2024-05-30 | 2024-07-26 | 申玥蔻西摩半导体(湖州)有限公司 | A splitter grinding device |
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