WO1993001702A1 - Dispositif de pliage - Google Patents

Dispositif de pliage Download PDF

Info

Publication number
WO1993001702A1
WO1993001702A1 PCT/EP1992/001492 EP9201492W WO9301702A1 WO 1993001702 A1 WO1993001702 A1 WO 1993001702A1 EP 9201492 W EP9201492 W EP 9201492W WO 9301702 A1 WO9301702 A1 WO 9301702A1
Authority
WO
WIPO (PCT)
Prior art keywords
bending
bending tool
leads
tool
movement
Prior art date
Application number
PCT/EP1992/001492
Other languages
English (en)
Inventor
Hendrikus Theodorus Berendts
Original Assignee
Asm-Fico Tooling B.V.
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Asm-Fico Tooling B.V. filed Critical Asm-Fico Tooling B.V.
Publication of WO1993001702A1 publication Critical patent/WO1993001702A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K13/00—Apparatus or processes specially adapted for manufacturing or adjusting assemblages of electric components
    • H05K13/0092—Treatment of the terminal leads as a separate operation

Definitions

  • the invention relates to a device for bending through two angles of roughly 90° the leads of a lead frame for carrying an encapsulated chip, comprising a cavity formed by mould halves movable relative to one* another for clampingly receiving a lead frame, a bending tool movable in the direction of the leads, means for driving and guiding the bending tool and a support mould for supporting bent leads.
  • the leads for bending are usually tin coated. Care has to be taken that the tin layer is not damaged during bending.
  • the bending tool is guided such that a movement is performed approximately perpendicular to the lead for bending.
  • the bending tool was guided such that the direction of movement of the bending tool was directed at an oblique angle relative to the leads for bending.
  • the bending tool performs a pivoting movement around a shaft roughly transversely of the direction of movement, wherein the guide path is formed by a curved stop surface of a guide block which co-acts with a curved end portion of the bending tool.
  • a different movement contour can be selected by exchanging the bending tool and/or the guide block. This is of importance in the case for instance of wear.
  • Fig. 1 shows a lengthwise section through a bending device according to the invention
  • fig. 2 shows schematically the path of movement followed by the bending tool
  • fig. 3 is a perspective view of the bending tool from the bending device according to fig. l.
  • the bending device 1 comprises a base plate 2 on which is mounted a table 3.
  • the latter serves to support the lead frame for machining.
  • the device 1 is intended as a manual operation device for use in for instance the manufacture of pilot series on laboratory and development scale.
  • Recessed into the table 3 is a cavity 4 in which can be placed a chip already encapsulated with plastic.
  • the cavity is bounded at the top by a vertically movable upper mould 5 connecting onto table 3.
  • the table 3 can be moved as according to arrow PI by means of operating a pull rod 6.
  • a lead frame In the pulled out position a lead frame can be placed, taken out or have its position changed. This is carried out manually.
  • the table has on the underside a flange-like edge 7 received slidably in the guide member 8.
  • a similar flange ⁇ like edge and guide member are arranged on the opposite side.
  • the upper mould half 5 is driven from the motor 20.
  • a resetting spring 9 is placed round the drive shaft 8.
  • the leads of a lead frame placed in the cavity 4 are bent in the desired manner by the bending tool 10.
  • a pivoting movement round the rotating shaft ' 11 is performed as well as a vertical movement.
  • the movement of the bending tool is guided by the co-acting contour surfaces 12 on a guide block 13 and the contour line 14 of the bending tool.
  • the contour lines are chosen such that the point of engagement 15 of the bending tool on the leads for bending does not change during the displacement along the path 16. No shear forces are therefore exerted on the lead 17 so that the tin layer present on the lead is not damaged.
  • the lead 17 is bent in accordance with the shape 18 in the table 3. Attention is drawn to the fact that the bending tool 10 has the form shown in fig. 2.
  • the bending tool is biased in horizontal direction of the spring 19. During the pivoting movement round the shaft 10 the bending tool moves counter to the spring tensioning 19. Per bending stroke all leads on one side of the frame are bent. After the bending stroke has been performed the upper mould 5 is raised, the pull rod 6 operated and the lead frame turned (manually) through 90° for bending of the leads on one of the other sides.
  • clamping of the lead frame using the clamping block 20 and bending by means of the bending tool 10 takes place in one stroke. After clamping, the bending tool 10 moves further counter to the spring tensioning.
  • the bending tool is arranged exchangeably so that the device according to the invention can easily be adapted to other dimensions, bending angles and the like, which is a great advantage for the production of pilot series on smaller scale.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Lead Frames For Integrated Circuits (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Wire Processing (AREA)

Abstract

Dispositif de pliage servant à serrer et à plier les connexions d'une grille de connexions portant une puce enrobée de matière plastique. Le pliage s'effectue à l'aide d'un outil de pliage guidé de telle sorte que, pendant le pliage, aucun déplacement relatif du point de contact entre l'outil de pliage et les connexions à plier ne se produise. Ainsi, on évite d'abîmer la couche d'étain recouvrant les connexions.
PCT/EP1992/001492 1991-07-03 1992-07-02 Dispositif de pliage WO1993001702A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE9100638A BE1005064A4 (nl) 1991-07-03 1991-07-03 Buiginrichting.
BE9100638 1991-07-03

Publications (1)

Publication Number Publication Date
WO1993001702A1 true WO1993001702A1 (fr) 1993-01-21

Family

ID=3885598

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1992/001492 WO1993001702A1 (fr) 1991-07-03 1992-07-02 Dispositif de pliage

Country Status (2)

Country Link
BE (1) BE1005064A4 (fr)
WO (1) WO1993001702A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2277702A (en) * 1993-04-14 1994-11-09 Advanced Systems Automation Pt A method and apparatus for forming leads of semiconductor devices using a single point contact swing cam
US9949983B2 (en) 2013-10-18 2018-04-24 Psyadon Pharmaceuticals, Inc. Fused benzazepines for treatment of stuttering
EP3919060A1 (fr) 2012-07-12 2021-12-08 Emalex Biosciences, Inc. Ecopipam pour le traitement du syndrome de tourettes

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5952858A (ja) * 1982-09-18 1984-03-27 Mitsubishi Electric Corp 半導体装置のリ−ド成形装置

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5952858A (ja) * 1982-09-18 1984-03-27 Mitsubishi Electric Corp 半導体装置のリ−ド成形装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 8, no. 142 (E-254)(1579) 3 July 1984 & JP,A,59 052 858 ( MITSUBISHI ) 27 March 1984 *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2277702A (en) * 1993-04-14 1994-11-09 Advanced Systems Automation Pt A method and apparatus for forming leads of semiconductor devices using a single point contact swing cam
GB2277702B (en) * 1993-04-14 1996-05-29 Advanced Systems Automation Pt A method and apparatus for forming leads of semiconductor devices using a single point contact swing cam
SG69071A1 (en) * 1993-04-14 2002-01-15 Advanced Systems Automation A method and apparatus for performing leads of semiconductor devices using a single point contact swing cam
EP3919060A1 (fr) 2012-07-12 2021-12-08 Emalex Biosciences, Inc. Ecopipam pour le traitement du syndrome de tourettes
US11298361B2 (en) 2012-07-12 2022-04-12 Emalex Biosciences, Inc. Fused benzazepines for treatment of Tourette's Syndrome
US9949983B2 (en) 2013-10-18 2018-04-24 Psyadon Pharmaceuticals, Inc. Fused benzazepines for treatment of stuttering

Also Published As

Publication number Publication date
BE1005064A4 (nl) 1993-04-06

Similar Documents

Publication Publication Date Title
EP1651409B1 (fr) Dispositif a lame circulaire pour couper des feuilles planes de marbre, de granit ou de verre
WO1993001702A1 (fr) Dispositif de pliage
CN211192238U (zh) 一种高效率钢材切割机
CN109877708B (zh) 一种环保型大理石建材切割打磨一体设备
KR101167950B1 (ko) 건축용 패널 가공 장치 및 이를 이용하여 제조한 건축용 패널
KR20160125932A (ko) 폼 블록의 자투리부분 절단방법 및 절단장치
KR100453894B1 (ko) 목재곡면 가공용 가공장치
CN111231490A (zh) 一种覆膜板自动撕膜装置及方法
CN216139108U (zh) 用于异形板材的倒角切削机构和倒角机
CN213944409U (zh) 一种折弯机的斜线折弯机构
EP0891822A1 (fr) Dispositif et méthode pour l'usinage d'une rainure en forme d'un "v" dans une feuille ou tÔle
CN112622075A (zh) 一种用于石料翻面的切割设备及操作方法
JP2656992B2 (ja) ガラス切断機
CN215614297U (zh) 一种型材折弯成型装置
JPH0344421Y2 (fr)
CN110743944A (zh) 一种汽车饰条折弯冲切装置
CN115229016B (zh) 一种空调加工用冲压装置
CN212602373U (zh) 一种实木家具生产用木材开料装置
US4603716A (en) Machine for contouring a workpiece
CN215787058U (zh) 一种钢结构加工用剪板机
CN220196045U (zh) 一种快速定位的冲压机构
CN114952291B (zh) 一种用于金属材料加工的切割打磨结构
CN2565599Y (zh) 滑轨式切割机
CN210967159U (zh) 一种外圆自动加工装置
CN215094053U (zh) 油气分离滤芯法兰用石棉橡胶垫全自动打孔切割成形专机

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): JP KR US

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FR GB GR IT LU MC NL SE

DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
122 Ep: pct application non-entry in european phase