CN109175070B - Novel cutting edge for preventing leftovers from backfilling or chip jumping in stamping process - Google Patents
Novel cutting edge for preventing leftovers from backfilling or chip jumping in stamping process Download PDFInfo
- Publication number
- CN109175070B CN109175070B CN201811423193.6A CN201811423193A CN109175070B CN 109175070 B CN109175070 B CN 109175070B CN 201811423193 A CN201811423193 A CN 201811423193A CN 109175070 B CN109175070 B CN 109175070B
- Authority
- CN
- China
- Prior art keywords
- groove
- cutting edge
- semicircular
- stamping
- preventing
- 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.)
- Active
Links
- 238000005520 cutting process Methods 0.000 title claims abstract description 17
- 238000000034 method Methods 0.000 title abstract description 10
- 230000009191 jumping Effects 0.000 title description 4
- 235000021190 leftovers Nutrition 0.000 title description 4
- 238000005452 bending Methods 0.000 claims description 12
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000013461 design Methods 0.000 abstract description 4
- 238000012986 modification Methods 0.000 abstract description 4
- 230000004048 modification Effects 0.000 abstract description 4
- 238000004100 electronic packaging Methods 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 abstract description 2
- 238000012545 processing Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 1
- 210000001061 forehead Anatomy 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D28/00—Shaping by press-cutting; Perforating
- B21D28/02—Punching blanks or articles with or without obtaining scrap; Notching
- B21D28/14—Dies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/08—Dies with different parts for several steps in a process
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
Abstract
The invention belongs to the field of stamping production of lead frames for electronic packaging, relates to a cutting edge used for stamping high-power lead frames, and particularly relates to a novel cutting edge for preventing leftover backfill or chip jump in a stamping process. The invention has the advantages of convenient design and processing, no influence on the replacement of the mould and the replacement of the product model, simple structure and no excessive cost and modification time. The technology reduces the maintenance frequency and time of the stamping die, greatly improves the production efficiency and creates more economic benefits.
Description
Technical Field
The invention belongs to the field of stamping production of lead frames for electronic packaging, relates to a cutting edge used for stamping high-power lead frames, and particularly relates to a novel cutting edge for preventing leftover backfill or chip jump in a stamping process.
Background
With the continuous development of society, the popularity of electronic products is higher and higher, and aiming at the wide market of high-power lead frames, the company finds that the chip jump of a high-speed progressive die is always a problem which is annoying to design and production staff no matter in the past or in the present in the research and development of high-power lead frame stamping dies. The term "scrap" refers to the phenomenon that scraps or products which should be dropped from the edge of a female die during the production process of the die are jumped out of the die surface along with the male die for various reasons.
Disclosure of Invention
The invention aims at the problems and provides a novel cutting edge for preventing the backfilling or the scrap jumping of scraps in the stamping process.
In order to achieve the above purpose, the invention adopts the technical scheme that the novel cutting edge for preventing the backfilling or the chip jump of leftovers in the stamping process comprises a cutting edge main body, wherein one side of the cutting edge main body is provided with a cutting edge surface, and the cutting edge surface is provided with an S-shaped inclined groove;
the inclination angle alpha of the S-shaped inclined groove is 5-10 degrees;
the S-shaped inclined groove is a semicircular groove;
the S-shaped inclined groove comprises an upper semicircular groove, a lower semicircular groove and a lower groove, wherein the upper semicircular groove is arranged on the upper part
An S-shaped bending groove between the semicircular groove and the lower semicircular groove;
a semicircular convex part is arranged in the upper semicircular groove, and a semicircular concave part is arranged in the lower semicircular groove
Semi-circular ring groove.
Preferably, the number of the semicircular convex parts is 2-4, wherein the distance between the two semicircular convex parts is 1-2 mm.
Preferably, the number of the semicircular grooves is 2-3, wherein the distance between the two semicircular grooves is 0.8-1.5mm.
Preferably, the number of bending points of the S-shaped bending groove is 5-8.
Compared with the prior art, the invention has the advantages and positive effects that,
1. the invention has the advantages of convenient design and processing, no influence on the replacement of the mould and the replacement of the product model, simple structure and no excessive cost and modification time. The technology reduces the maintenance frequency and time of the stamping die, greatly improves the production efficiency and creates more economic benefits.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort to a person skilled in the art.
Fig. 1 is a schematic perspective view of a novel blade for preventing the backfilling or the chip jump of the scraps in the punching process provided in example 1;
FIG. 2 is a schematic view of the structure of the surface of the edge surface of the novel edge for preventing the backfilling or chip jump of the scraps in the stamping process provided in example 1;
in the above figures, 1, a blade body; 11. a knife edge surface; 12. an S-shaped inclined groove; 121. an upper semicircular groove; 1211. a semicircular convex part; 122. s-shaped bending grooves; 1221. bending points; 123. a lower semicircular groove; 1231. semi-circular ring groove.
Detailed Description
In order that the above objects, features and advantages of the invention will be more clearly understood, a further description of the invention will be rendered by reference to the appended drawings and examples. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments may be combined with each other.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced otherwise than as described herein, and therefore the present invention is not limited to the specific embodiments of the disclosure that follow.
In embodiment 1, as shown in fig. 1-2, the invention provides a novel blade for preventing the backfilling or the chip jump of the scraps in the stamping process, and as can be seen from the figure, the novel blade comprises a blade main body, one side of the blade main body is provided with a blade surface, the blade surface is provided with an S-shaped inclined groove, and due to the arrangement of the S-shaped inclined groove, the scraps produced in the stamping process generate tiny burrs at the corresponding positions of the chip jump preventing groove, the friction coefficient and the pressure of the scraps and the DIES are increased, and the friction force between the scraps and the DIES is increased, so that the backfilling or the chip jump of the scraps is prevented, and the following needs to be noted: the depth and slope of the grooves are set according to the thickness of the die-cut material and the length of the die-cut edge.
The inventor obtains through a large number of experiments that the inclined angle alpha of the S-shaped inclined groove is 5-10 degrees, and only when the angle of the inclined angle is at the angle, the small burr can be acted, the small burr is not acted, and the large burr can be generated when the angle of the inclined angle is too small;
the S-shaped inclined groove is a semicircular groove, and the semicircular groove is designed to enable the scraps to better pass through the groove;
the inventor further arranges the S-shaped inclined grooves in order to make the chip jumping effect better, namely the S-shaped inclined grooves comprise an upper semicircular groove, a lower semicircular groove and S-shaped bending grooves arranged between the upper semicircular groove and the lower semicircular groove, wherein the upper semicircular groove, the lower semicircular groove and the S-shaped bending grooves are arranged in a smooth transitional connection manner; the inventor can make S type slope slot can reach better forehead effect, is provided with semicircle convex part in the upper portion semicircle slot, is provided with semicircle recess in the lower part semicircle slot.
In addition to the above design, the inventors have made extensive experiments to draw the following conclusions:
the number of the semicircular convex parts is 2-4, wherein the distance between the two semicircular convex parts is 1-2 mm;
the number of the semicircular grooves is 2-3, wherein the distance between the two semicircular grooves is 0.8-1.5mm;
the number of the bending points of the S-shaped bending groove is 5-8
The present invention is not limited to the above-mentioned embodiments, and any equivalent embodiments which can be changed or modified by the technical content disclosed above can be applied to other fields, but any simple modification, equivalent changes and modification made to the above-mentioned embodiments according to the technical substance of the present invention without departing from the technical content of the present invention still belong to the protection scope of the technical solution of the present invention.
Claims (1)
1. The novel cutting edge is characterized by comprising a cutting edge main body, wherein one side of the cutting edge main body is provided with a cutting edge surface, and an S-shaped inclined groove is formed in the cutting edge surface;
the inclination angle alpha of the S-shaped inclined groove is 5-10 degrees;
the S-shaped inclined groove is a semicircular groove;
the S-shaped inclined groove comprises an upper semicircular groove, a lower semicircular groove and an S-shaped bending groove arranged between the upper semicircular groove and the lower semicircular groove;
a semicircular convex part is arranged in the upper semicircular groove, and a semicircular groove is arranged in the lower semicircular groove;
the number of the semicircular convex parts is 2-4, wherein the distance between the two semicircular convex parts is 1-2 mm;
the number of the semicircular grooves is 2-3, wherein the distance between the two semicircular grooves is 0.8-1.5mm;
the number of the bending points of the S-shaped bending grooves is 5-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811423193.6A CN109175070B (en) | 2018-11-27 | 2018-11-27 | Novel cutting edge for preventing leftovers from backfilling or chip jumping in stamping process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811423193.6A CN109175070B (en) | 2018-11-27 | 2018-11-27 | Novel cutting edge for preventing leftovers from backfilling or chip jumping in stamping process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109175070A CN109175070A (en) | 2019-01-11 |
| CN109175070B true CN109175070B (en) | 2024-03-29 |
Family
ID=64938132
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811423193.6A Active CN109175070B (en) | 2018-11-27 | 2018-11-27 | Novel cutting edge for preventing leftovers from backfilling or chip jumping in stamping process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109175070B (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101905265A (en) * | 2010-08-20 | 2010-12-08 | 上海徕木电子股份有限公司 | Scrap-bouncing preventing method for press tool |
| CN102139329A (en) * | 2011-04-21 | 2011-08-03 | 优德精密工业(昆山)有限公司 | High-sped progressive die anti-scrap bouncing cavity die |
| CN102240723A (en) * | 2011-04-21 | 2011-11-16 | 优德精密工业(昆山)有限公司 | Anti-scrap-bounding female die for high-speed progressive die |
| CN202527574U (en) * | 2012-03-02 | 2012-11-14 | 台州职业技术学院 | Side edge blanking anti-scrap-jumping structure |
| CN103170532A (en) * | 2013-04-09 | 2013-06-26 | 铜陵三佳山田科技有限公司 | Scrap bounce prevention mold applied to punching of light-emitting diode (LED) bracket |
| CN203804031U (en) * | 2014-03-18 | 2014-09-03 | 广东美的集团芜湖制冷设备有限公司 | Hole-flanging die tripping prevention device |
| CN104923636A (en) * | 2014-03-19 | 2015-09-23 | 上海强精金属制品有限公司 | Anti-jumping chip punching female die for microwave oven cranial cavity base plate |
| CN205587527U (en) * | 2016-04-08 | 2016-09-21 | 东莞市石上精密模具有限公司 | Bouncing scrap prevention die structure |
| KR200482804Y1 (en) * | 2016-09-26 | 2017-03-22 | 존 중원 김 | Cook knife for preventing from attachment |
| CN206325993U (en) * | 2016-11-23 | 2017-07-14 | 江阴康强电子有限公司 | Anti-scrap bouncing, the punching and blanking die for turning over bits |
| CN209174675U (en) * | 2018-11-27 | 2019-07-30 | 济南界龙科技有限公司 | It is a kind of to prevent leftover bits and pieces from backfilling or jumping the novel blade of bits in punching press processing procedure |
-
2018
- 2018-11-27 CN CN201811423193.6A patent/CN109175070B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101905265A (en) * | 2010-08-20 | 2010-12-08 | 上海徕木电子股份有限公司 | Scrap-bouncing preventing method for press tool |
| CN102139329A (en) * | 2011-04-21 | 2011-08-03 | 优德精密工业(昆山)有限公司 | High-sped progressive die anti-scrap bouncing cavity die |
| CN102240723A (en) * | 2011-04-21 | 2011-11-16 | 优德精密工业(昆山)有限公司 | Anti-scrap-bounding female die for high-speed progressive die |
| CN202527574U (en) * | 2012-03-02 | 2012-11-14 | 台州职业技术学院 | Side edge blanking anti-scrap-jumping structure |
| CN103170532A (en) * | 2013-04-09 | 2013-06-26 | 铜陵三佳山田科技有限公司 | Scrap bounce prevention mold applied to punching of light-emitting diode (LED) bracket |
| CN203804031U (en) * | 2014-03-18 | 2014-09-03 | 广东美的集团芜湖制冷设备有限公司 | Hole-flanging die tripping prevention device |
| CN104923636A (en) * | 2014-03-19 | 2015-09-23 | 上海强精金属制品有限公司 | Anti-jumping chip punching female die for microwave oven cranial cavity base plate |
| CN205587527U (en) * | 2016-04-08 | 2016-09-21 | 东莞市石上精密模具有限公司 | Bouncing scrap prevention die structure |
| KR200482804Y1 (en) * | 2016-09-26 | 2017-03-22 | 존 중원 김 | Cook knife for preventing from attachment |
| CN206325993U (en) * | 2016-11-23 | 2017-07-14 | 江阴康强电子有限公司 | Anti-scrap bouncing, the punching and blanking die for turning over bits |
| CN209174675U (en) * | 2018-11-27 | 2019-07-30 | 济南界龙科技有限公司 | It is a kind of to prevent leftover bits and pieces from backfilling or jumping the novel blade of bits in punching press processing procedure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109175070A (en) | 2019-01-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102240723A (en) | Anti-scrap-bounding female die for high-speed progressive die | |
| CN109175070B (en) | Novel cutting edge for preventing leftovers from backfilling or chip jumping in stamping process | |
| CN201871610U (en) | Microphone stamping die | |
| CN203409071U (en) | Stator and rotor sheet punching groove cutting mould | |
| CN202438619U (en) | Concave die capable of preventing products from being broken at curve positions in bending | |
| CN202070643U (en) | High-speed scrap-splashing resistant die of progressive dies | |
| CN201702272U (en) | Forming module of metal sheet | |
| CN209174675U (en) | It is a kind of to prevent leftover bits and pieces from backfilling or jumping the novel blade of bits in punching press processing procedure | |
| CN201625712U (en) | Die for trimming and piercing horn component with inclined plane more than 45 degrees and less than 55 degrees | |
| CN202861107U (en) | Stuck-point type waster material anti-bouncing mould | |
| CN101885023A (en) | Metal sheet molding die | |
| CN202715720U (en) | Bearing roller stamping three-combination base mould | |
| CN204220780U (en) | The once-forming diel of a kind of clutch case detaching hook | |
| CN206373240U (en) | A kind of continuous stamping die with step pitch function | |
| CN204657243U (en) | A kind of mould structure preventing strip scrap from turning over bits | |
| CN205702433U (en) | A kind of production mould utilizing the compressing blade of PM technique | |
| CN205033840U (en) | Ultra -thin three -dimensional noble metal handicraft of utensil third dimension | |
| CN217225855U (en) | Die edge cutting knife edge assembly | |
| CN209515653U (en) | Improve the lead frame of SOT and SOD packaging body vertical direction binding force | |
| CN209577831U (en) | Stamping parts convex closure molding machine | |
| CN201644639U (en) | Punch-die for punching nuclear industrial stator core | |
| CN202225263U (en) | Die-cutting mould for thick materials | |
| CN213436622U (en) | Integrated die structure for bending | |
| CN205739310U (en) | A kind of feeding-distribution device of semiconductor lead frame | |
| CN104923636A (en) | Anti-jumping chip punching female die for microwave oven cranial cavity base plate |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |