EP0505535A1 - Dispositif pour enlever des composants defectueux de circuits imprimes - Google Patents

Dispositif pour enlever des composants defectueux de circuits imprimes

Info

Publication number
EP0505535A1
EP0505535A1 EP19910917305 EP91917305A EP0505535A1 EP 0505535 A1 EP0505535 A1 EP 0505535A1 EP 19910917305 EP19910917305 EP 19910917305 EP 91917305 A EP91917305 A EP 91917305A EP 0505535 A1 EP0505535 A1 EP 0505535A1
Authority
EP
European Patent Office
Prior art keywords
guide
carrier
chisel
component
circuits
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.)
Withdrawn
Application number
EP19910917305
Other languages
German (de)
English (en)
Inventor
Miroslav Tresky
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0505535A1 publication Critical patent/EP0505535A1/fr
Withdrawn legal-status Critical Current

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
    • H05K13/04—Mounting of components, e.g. of leadless components
    • H05K13/0486—Replacement and removal of components
    • H05K13/0491—Hand tools therefor

Definitions

  • the invention relates to a device for removing defective components from circuits, with a chisel for separating a component from a carrier.
  • the present invention has for its object to provide a simple device for removing defective components from circuits, which enables precise handling by a single operator and in which damage to adjacent components or the carrier is avoided.
  • this object is achieved in that the chisel is installed with one end in a guide so as to be longitudinally displaceable and can be actuated via a reversible striking element assigned to the guide.
  • a reversible striking element assigned to the guide In the drawing, two exemplary embodiments of the device according to the invention are shown and described in more detail below.
  • Fig. 1 shows a first embodiment of a device for removing defective components from circuits in vertical longitudinal section.
  • Fig. 2 is a partial view of the device shown in Fig. 1 in
  • Fig. 3 shows a second embodiment of a device for removing defective components from circuits in the vertical
  • Fig. 4 is a schematic representation of a repair station for
  • FIG. 1 schematically shows a defective component 1 which is fastened on a carrier 2 and which is to be separated from the carrier 2 by means of a device 3.
  • the device 3 has a chisel 4, the pointed part 5 of which, in the position shown, engages the one connection point 6 between the component 1 and the carrier 2.
  • the tip-shaped part 5 has side surfaces 5a, 5b which form an edge 7. With its cylindrical surface 8, the chisel 4 projects into a bore 11 in a cylinder 10.
  • the cylinder 10 has a shoulder 12 in the lower region, which is provided with at least one, possibly two slot incisions 13 (see also FIG. 2) for the resilient fastening of the chisel 4 in the cylinder 10.
  • the chisel 4 which can be moved longitudinally in the cylinder 10, is axially supported in the position shown with its end face 14 on a shoulder 15 of the bore 11.
  • the bore 11 opens into a cylinder space 16.
  • the other end face of the cylinder space 16 is designated by 23.
  • An axially displaceable piston 17 is located in the cylinder space 16.
  • the cylinder space 16 is closed at the top by a closure 18, the extension 19 opens into a vacuum hose 20.
  • the vacuum hose 20 is connected to a vacuum or pressure source, not shown in detail.
  • the piston 17 is equipped on the side facing the chisel 4 with an impact pin 22 whose diameter is smaller than the diameter of the part of the bore 11 opening into the cylinder space 16.
  • a lower end face of the piston 17 is designated by 24.
  • FIG. 3 shows a mechanical version of the piston actuation.
  • the entire device is designated 3a.
  • a chisel 4a projects into a cylinder 10a in which a piston 17a is located.
  • a spring 27 is arranged between an upper surface 25 of the piston 17a and an end surface 26 of an adjusting screw 33.
  • 3 shows the upper position of the piston 17a, in which the spring 27 is compressed.
  • the piston 17a is held by a pawl 28.
  • the pawl 28 is pivotable about a pawl axis 31 attached to the cylinder 10a.
  • a pawl spring 30 is arranged between the pawl 28 and the cylinder 10a.
  • the piston 17a On the side facing the chisel 4a, the piston 17a is provided with an impact pin 34.
  • the piston 17a is also equipped with a pin 32 which projects through a slot 35 in the cylinder 10a.
  • FIG. 4 schematically shows an embodiment of a repair station 50 for circuits.
  • An XY positioning table 40 is located on a frame 41, on which the carrier 2 with the defective component 1 is arranged.
  • There is a lower heat source 42 and an upper heat source 43 which are connected to the frame 41 in a manner not shown and can be mounted on the frame 41 in a height-adjustable manner, for example, by guides not shown.
  • On the frame 41 a work space 45 is also arranged in a height-adjustable manner via a vertical guide 44.
  • the device 3, which has been shown and described in FIG. 1, is fastened to the working arm 45 via a pivotable holder 46.
  • the cylinders 10, 10a and the pistons 17, 17a shown in FIGS. 1 and 3 could pass through
  • a chisel 4 or 4a of suitable shape is selected and inserted up to the shoulder 15 (FIG. 1 into the cylinder 10 or 10a.
  • the device 3 is then in the position shown in FIG. 1
  • the device 3 according to FIG. 1 is used in connection with the repair station 50 according to FIG.
  • the piston 17a Via the pin 32 protruding from the cylinder 10a, the piston 17a is brought upward against the force of the spring 27 and held in this position by the pawl 28. By pivoting the pawl 28 counterclockwise, the piston 17a is released and moved downward by the spring 27.
  • the external force required to separate the component from the carrier 2 can be applied in a targeted manner and the size and frequency can be controlled.
  • Different chisels 4 and 4a with a suitable geometry are easily interchangeable. The risk of damaging adjacent components or the carrier 2 is thought to be eliminated.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Electric Connection Of Electric Components To Printed Circuits (AREA)

Abstract

Pour la réparation de circuits imprimés, dans le cas où il n'est pas possible de détacher des composants défectueux (1) de leur support (2) par simple échauffement du point de soudure, on a prévu un dispositif (3 ou 3a). Un burin (4 ou 4a), mobile à l'une de ses extrémités, est monté dans un cylindre (10 ou 10a) et actionnable par un piston pilotable (17 ou 17a). Grâce à ce dispositif simple (3), il est possible également de réparer avec précision des circuits à haute densité de composants, sans endommager les composants voisins ni le support (2).
EP19910917305 1990-10-15 1991-10-14 Dispositif pour enlever des composants defectueux de circuits imprimes Withdrawn EP0505535A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH3296/90 1990-10-15
CH329690 1990-10-15

Publications (1)

Publication Number Publication Date
EP0505535A1 true EP0505535A1 (fr) 1992-09-30

Family

ID=4252917

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19910917305 Withdrawn EP0505535A1 (fr) 1990-10-15 1991-10-14 Dispositif pour enlever des composants defectueux de circuits imprimes

Country Status (3)

Country Link
EP (1) EP0505535A1 (fr)
JP (1) JPH05504513A (fr)
WO (1) WO1992007455A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4320670A1 (de) * 1993-06-22 1995-01-05 Microtronic Microelectronic Co Verfahren und Vorrichtung zur Reparatur von Elektronikplatinen
WO2005046300A2 (fr) * 2003-11-10 2005-05-19 Miroslav Tresky Extracteur de puce

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1503228A (en) * 1976-09-17 1978-03-08 Amp Inc Tool for applying a compressive force to a workpiece
DE3123537C2 (de) * 1981-06-13 1985-07-25 "F. u. K." Frölich & Klüpfel Drucklufttechnik GmbH & Co KG, 5600 Wuppertal Schriftenhammer
DE3305236C2 (de) * 1983-02-10 1985-11-21 Schweizerische Aluminium Ag, Chippis Vorrichtung zur Steuerung einer Einschlagvorrichtung einer Schmelzflußelektrolysezelle und Verfahren zum Betreiben der Vorrichtung
US4664739A (en) * 1983-12-19 1987-05-12 Stauffer Chemical Company Removal of semiconductor wafers from dicing film
US4771932A (en) * 1985-12-09 1988-09-20 Henry Kim Method for soldering and desoldering electronic components
ATE146334T1 (de) * 1988-02-24 1996-12-15 Control Automation Inc Gerät zur inspektion von gedruckten schaltungen mit bauteilen, die auf der oberfläche montiert sind.

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9207455A1 *

Also Published As

Publication number Publication date
JPH05504513A (ja) 1993-07-15
WO1992007455A1 (fr) 1992-04-30

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Legal Events

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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