CN116053151A - Wedge-shaped riving knife with side incoming line - Google Patents
Wedge-shaped riving knife with side incoming line Download PDFInfo
- Publication number
- CN116053151A CN116053151A CN202211682634.0A CN202211682634A CN116053151A CN 116053151 A CN116053151 A CN 116053151A CN 202211682634 A CN202211682634 A CN 202211682634A CN 116053151 A CN116053151 A CN 116053151A
- Authority
- CN
- China
- Prior art keywords
- wire
- wedge
- wire inlet
- riving knife
- cutter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000003466 welding Methods 0.000 abstract description 14
- 238000005452 bending Methods 0.000 abstract 1
- 230000007704 transition Effects 0.000 description 6
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
Images
Classifications
-
- 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
- B23K37/02—Carriages for supporting the welding or cutting element
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L24/00—Arrangements for connecting or disconnecting semiconductor or solid-state bodies; Methods or apparatus related thereto
- H01L24/74—Apparatus for manufacturing arrangements for connecting or disconnecting semiconductor or solid-state bodies
- H01L24/78—Apparatus for connecting with wire connectors
-
- 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
- H01L2224/7825—Means for applying energy, e.g. heating means
- H01L2224/783—Means for applying energy, e.g. heating means by means of pressure
- H01L2224/78313—Wedge
-
- 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
- H01L2224/7825—Means for applying energy, e.g. heating means
- H01L2224/783—Means for applying energy, e.g. heating means by means of pressure
- H01L2224/78313—Wedge
- H01L2224/78314—Shape
- H01L2224/78315—Shape of the pressing surface, e.g. tip or head
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Wire Bonding (AREA)
Abstract
The invention discloses a wedge-shaped riving knife with a side incoming line, which is columnar and comprises a cutter bar and a wedge-shaped cutter head; the tip of tool bit sets up in one side of cutter arbor central axis, and the cutter arbor is equipped with the inlet wire groove, and the inlet wire groove is seted up along cutter arbor length direction, and the inlet wire groove sets up in the opposite side of cutter arbor central axis relative tool bit tip. The wire guide groove is arranged on the side surface of the riving knife, so that the radian between the wire outlet of the wire and the wire through hole of the welding end is large enough, bending of the wire in the thin riving knife is avoided, the wire can smoothly enter the wire through hole, and the welding efficiency is improved.
Description
Technical Field
The invention relates to the technical field of wire bonding, in particular to a wedge-shaped riving knife with a side incoming wire.
Background
The wedge is an important tool for wire bonding, and in order to meet the requirement of reducing the line width of an integrated circuit, the used deep cavity welding wedge is often provided with a 90-degree straight hole for the wire. The straight hole of the lead wire generally adopts a central round hole, and for a thinner chopper, the radian between the wire outlet and the inclined wire penetrating hole of the welding end is too small, so that the smoothness of wire feeding of the wire is directly affected, and the welding operation is not facilitated. In addition, to square welding wire, the round hole obviously is not too laminating, if adopt square lead wire straight hole, because the dark footpath in lead wire straight hole is great, can't guarantee machining precision and roughness basically, and processing cost is too high.
Disclosure of Invention
In view of this, the invention provides a wedge-shaped riving knife with a side wire inlet, which solves the problems that the wedge-shaped riving knife in the prior art cannot ensure smooth wire inlet and wire is easy to bend.
The specific technical scheme of the invention is as follows: a wedge-shaped riving knife with a side incoming line, which is columnar and comprises a cutter bar and a wedge-shaped cutter head; the end part of the cutter head is arranged at one side of the central axis of the cutter bar; the cutter bar is provided with a wire inlet groove which is formed in the length direction of the cutter bar, and the wire inlet groove is formed in the other side of the central axis of the cutter bar opposite to the end part of the cutter head.
Further, the wire inlet groove is formed in the side face of the cutter bar.
Further, the end part of the cutter head is provided with a lead through hole and a welding part, the lead through hole comprises a wire inlet end and a wire outlet end, the wire inlet end opening faces the wire inlet groove, the wire outlet end opening faces the welding part, and the center line of the wire inlet end opening is aligned with the center line of the wire inlet groove.
Further, a first curved surface in smooth transition is arranged at the opening of the wire inlet end.
Further, the inlet wire end opening is an oval opening.
Further, the outlet end opening is an elliptical opening.
Further, the lead through hole is a tapered through hole which tapers from the lead-in end to the lead-out end.
Further, the wire inlet groove is a square groove.
Further, a second curved surface in smooth transition is arranged at the outlet of the wire inlet groove.
The invention has the beneficial effects that:
(1) According to the invention, the wire inlet groove is arranged on the side surface of the riving knife, and the cutter head is arranged on the other side of the cutter bar relative to the wire inlet groove, so that the distance between the wire and the wire through holes of the cutter head is increased after the wire is discharged from the tail end of the wire inlet groove, and the radian of the wire can be increased for a finer riving knife, thereby ensuring that the wire can smoothly enter the wire through holes, and improving the welding stability;
(2) The wire inlet groove is a square groove and is used for better fixing square wires and reducing the swing of the wires;
(3) The wire inlet groove is arranged on the side face of the riving knife, so that the processing and the manufacturing are convenient, and the production cost can be reduced.
Drawings
FIG. 1 is a schematic view of a wedge of the present invention;
FIG. 2 is a schematic view of a wedge riving knife head according to the present invention;
FIG. 3a is a schematic view of an end portion of a tool bar according to the present invention;
FIG. 3b is a schematic view of an end portion of a tool bar according to another embodiment of the invention;
FIG. 3c is a schematic view of the end of the square wire slot cutter bar of the present invention;
FIG. 4 is a schematic view of a wedge riving knife head according to the present invention;
FIG. 5 is a schematic view of a tapered lead via of a wedge cutter head according to the present invention.
In the figure:
1. cutter bar
11. Wire inlet slot
2. Wedge-shaped tool bit;
21. end of tool bit
22. Lead wire via
221. Wire inlet end
222. Wire outlet end
23. Welded part
c central axis
r1 first curved surface
r2 second curved surface
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
The invention provides a wedge-shaped riving knife with side incoming wires, which is in a column shape and comprises a cutter bar 1 and a wedge-shaped cutter head 2, as shown in fig. 1 and 2; the end part 21 of the cutter head is arranged on one side of the central axis c of the deflection cutter bar; the cutter bar 1 is provided with a wire inlet groove 11, the wire inlet groove 11 is formed in the length direction of the cutter bar 1, and the wire inlet groove 11 is formed in the other side of the central axis c of the cutter bar 1 opposite to the cutter head end 21.
In particular, referring to fig. 3a, in the present embodiment, the wire inlet slot 11 is disposed at a position offset from the central axis c of the tool bar 1 and opposite to the tool bit end 21, but the entire wire inlet slot 11 is still inside the tool bar 1.
Referring to fig. 3b, in another embodiment, the wire inlet slot 11 may be formed on the side of the cutter bar 1, and also on the other side of the center axis of the cutter bar with respect to the cutter head end 21, and is closer to the edge of the cutter bar 1 than in the previous embodiment, further, one side of the wire inlet slot 11 in this embodiment is exposed to the edge of the cutter bar 1, that is, the wire inlet slot in this embodiment has a side or side in the length direction that is open, and in particular, the wire may be directly placed into the wire inlet slot 11 from the side that is open.
Furthermore, referring to fig. 3c, in order to match with the flat strip-shaped wire, the wire inlet groove 11 may be a square groove to adapt to the shape of the wire, so as to avoid the wire from being blocked in the circular hole during threading.
Referring to fig. 4, further, a wire through hole 22 and a welding portion 23 are provided at the end 21 of the tool bit of the present invention, the wire through hole 22 includes a wire inlet end 221 and a wire outlet end 222, the wire inlet end 221 is opened toward the wire inlet groove 11, the wire outlet end 222 is opened toward the welding portion 23, the center line of the wire inlet end 221 is aligned with the center line of the wire inlet groove 11, a smoothly transition first curved surface r1 is provided at the wire inlet end 221, a smoothly transition second curved surface r2 is provided at the outlet of the wire inlet groove 11, the wire inlet end 221 is an oval opening, and the wire outlet end 222 is also an oval opening, thereby limiting the wire from moving laterally in the wire through hole 22.
In addition, referring to fig. 5, in another case, the wire through hole is a tapered through hole tapering from the wire inlet end to the wire outlet end, so that the wire can pass through the wire through hole, and meanwhile, the positioning of the wire in the wire through hole can be further limited, so as to avoid the wire from being deviated.
In addition, can also set up the transition linkage segment of keeping away the sky between cutter arbor and wedge tool bit, connect the broken transition that can be the chamfer also can be for echelonment, its main aim at makes the radially inwards shrink of cutter arbor be connected cutter arbor and tool bit, can reach the effect of keeping away the sky in the bonding process simultaneously.
The invention is mainly used for a chopper for welding in the bonding process of semiconductor leads, a wire is penetrated through the threading groove which is offset from the central axis of the cutter bar, penetrates out from the tail end of the threading groove close to the cutter head, and then penetrates into a lead through hole of the cutter head to a welding part, so that the radian from the tail end of the threading groove to the lead through hole of the wire can be increased, and the wire feeding in the bonding process can be smoother.
In addition, since one side of the wire inlet slot is opened in one embodiment of the invention, the wire can be conveniently arranged, and the work that the wire must be penetrated from the end of the cutter bar in the past is simplified.
The invention has the beneficial effects that:
(1) According to the invention, the wire inlet groove is arranged on the side surface of the riving knife, and the cutter head is arranged on the other side of the cutter bar relative to the wire inlet groove, so that the distance between the wire and the wire through holes of the cutter head is increased after the wire is discharged from the tail end of the wire inlet groove, and the radian of the wire can be increased for a finer riving knife, thereby ensuring that the wire can smoothly enter the wire through holes, and improving the welding stability;
(2) The wire inlet groove is a square groove and is used for better fixing square wires, reducing the swing of the wires and simultaneously reducing the clamping in the wire feeding process;
(3) The wire inlet groove is arranged on the side face of the riving knife, so that threading and production processes are facilitated, and production cost can be reduced.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (9)
1. The wedge-shaped riving knife with the side incoming line is characterized in that the riving knife is columnar and comprises a cutter bar and a wedge-shaped cutter head; the end of the cutter head is arranged on one side of the central axis of the cutter bar, the cutter bar is provided with a wire inlet groove, the wire inlet groove is formed along the length direction of the cutter bar, and the wire inlet groove is arranged on the other side of the central axis of the cutter bar opposite to the end of the cutter head.
2. The wedge of claim 1 wherein the feed slot is open to the side of the knife bar.
3. The wedge of claim 2 wherein the bit end is provided with a wire lead via and a weld, the wire lead via including a wire inlet end and a wire outlet end, the wire inlet end opening facing the wire inlet slot, the wire outlet end opening facing the weld, a centerline of the wire inlet end opening aligned with a centerline of the wire inlet slot.
4. A wedge-type riving knife according to claim 3, wherein the entrance end opening is provided with a smoothly transitioned first curved surface.
5. A wedge-type riving knife according to claim 3, wherein the line entry end opening is an oval opening.
6. The wedge of claim 5 wherein the wire end opening is an oval opening.
7. A wedge as claimed in claim 3, wherein the lead-through hole is a tapered through hole tapering from the lead-in end to the lead-out end.
8. The wedge of claim 1 wherein the feed slot is a square slot.
9. The wedge of claim 1 wherein a smoothly transitioned second curved surface is provided at the entry slot exit.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211682634.0A CN116053151B (en) | 2022-12-26 | 2022-12-26 | Wedge-shaped riving knife with side incoming line |
| GBGB2310273.4A GB202310273D0 (en) | 2022-12-26 | 2023-07-05 | A wedge shaped cleaver for side entry |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211682634.0A CN116053151B (en) | 2022-12-26 | 2022-12-26 | Wedge-shaped riving knife with side incoming line |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116053151A true CN116053151A (en) | 2023-05-02 |
| CN116053151B CN116053151B (en) | 2024-04-09 |
Family
ID=86121104
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211682634.0A Active CN116053151B (en) | 2022-12-26 | 2022-12-26 | Wedge-shaped riving knife with side incoming line |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN116053151B (en) |
| GB (1) | GB202310273D0 (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004179214A (en) * | 2002-11-25 | 2004-06-24 | Sony Corp | Cutting method of bonding wire and bonding capillary |
| CN214588746U (en) * | 2021-01-28 | 2021-11-02 | 厦门虹鹭钨钼工业有限公司 | Wedge-shaped cleaver suitable for superfine-spacing wire bonding process |
| CN214978683U (en) * | 2021-01-04 | 2021-12-03 | 无锡精蓉创材料科技有限公司 | Micro-electronic micro-connection deep cavity welding cleaver with smooth wire feeding oblique angle structure |
| CN113787250A (en) * | 2021-07-27 | 2021-12-14 | 中国电子科技集团公司第二十九研究所 | Wedge-shaped cleaver structure for improving lead bonding precision |
| CN215919404U (en) * | 2021-10-22 | 2022-03-01 | 常州市润祥电子科技有限公司 | Multi-wire-groove riving knife capable of improving riving knife bonding efficiency |
-
2022
- 2022-12-26 CN CN202211682634.0A patent/CN116053151B/en active Active
-
2023
- 2023-07-05 GB GBGB2310273.4A patent/GB202310273D0/en not_active Ceased
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004179214A (en) * | 2002-11-25 | 2004-06-24 | Sony Corp | Cutting method of bonding wire and bonding capillary |
| CN214978683U (en) * | 2021-01-04 | 2021-12-03 | 无锡精蓉创材料科技有限公司 | Micro-electronic micro-connection deep cavity welding cleaver with smooth wire feeding oblique angle structure |
| CN214588746U (en) * | 2021-01-28 | 2021-11-02 | 厦门虹鹭钨钼工业有限公司 | Wedge-shaped cleaver suitable for superfine-spacing wire bonding process |
| CN113787250A (en) * | 2021-07-27 | 2021-12-14 | 中国电子科技集团公司第二十九研究所 | Wedge-shaped cleaver structure for improving lead bonding precision |
| CN215919404U (en) * | 2021-10-22 | 2022-03-01 | 常州市润祥电子科技有限公司 | Multi-wire-groove riving knife capable of improving riving knife bonding efficiency |
Also Published As
| Publication number | Publication date |
|---|---|
| GB202310273D0 (en) | 2023-08-16 |
| CN116053151B (en) | 2024-04-09 |
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| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |