EP0467894A1 - Device for cutting to length and bending connector leads - Google Patents
Device for cutting to length and bending connector leadsInfo
- Publication number
- EP0467894A1 EP0467894A1 EP19900904226 EP90904226A EP0467894A1 EP 0467894 A1 EP0467894 A1 EP 0467894A1 EP 19900904226 EP19900904226 EP 19900904226 EP 90904226 A EP90904226 A EP 90904226A EP 0467894 A1 EP0467894 A1 EP 0467894A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cutting
- bending
- printed circuit
- circuit board
- edge
- 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.)
- Ceased
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
- H05K13/0473—Cutting and clinching the terminal ends of the leads after they are fitted on a circuit board
Definitions
- the invention relates to a device for cutting and bending connecting wires of electronic components during their assembly on printed circuit boards by means of lower tools.
- the connecting wires are pressed against the printed circuit board bore after the cutting process and cut to length from a bending jaw, and are thus bent over.
- the consequence of this is that, due to relatively small position inaccuracies between the hole in the circuit board and the bending jaw, poor bending results are achieved, conductor tracks are damaged, short circuits occur or the electronic components can fall out of the circuit board.
- the invention is based on the object of providing a lower tool which enables a defined cutting to length and an error-free bending of connecting wires of electronic components when they are mounted on printed circuit boards, a secure mounting of the components being guaranteed until soldering in and no short circuits occurring .
- This object is achieved by using a device in which a first cutting and bending jaw with a Cutting edge and at least one gripping prong and a second cutting bending jaw with a structure, a bending edge, an edge and a surface are present, the cutting edge interacting with the edge, the gripping prongs interacting with the surface, the connecting wire being bent around the bending edge and in a connecting wire can be cut to length and bent in one operation.
- the invention is based on the finding that exact cutting to length and a defined bending of connecting wires is possible by means of two counter-bending jaws acting against one another without any force being exerted on the printed circuit board or the bore therein.
- This produces a solely '1 between the two cutting-bending jaws flow-off allows fender cutting and bending operation, wherein a terme ⁇ certain turning angle is a cutting-bending jaw achievable by the configuration of the surface.
- the positioning between the lower tool and the bore takes place in relatively large tolerance ranges.
- a predetermined distance between the underside of the circuit board and the interface at which the connecting wire is cut to length is set by the construction of a cutting and bending jaw on which the printed circuit board is placed.
- the construction of the device according to the invention is simplified by a pivot point common to the cutting-bending process for both cutting-bending jaws.
- the lower tool is rotatably mounted for targeted adjustment of the bending direction of the connecting wires.
- Figure 1 shows a device with circuit board and component in the starting position.
- FIG. 2 shows a device corresponding to FIG. 1 in the working position.
- Figure 3 shows a device in the end position.
- the first cutting and bending jaws 1 shows a first cutting-bending jaw 1 and a second cutting-bending jaw 2 together with a printed circuit board 13 and an electronic component 12 and an associated connecting wire 14.
- the circuit board 13, which is usually made of plastic, has the bore 11.
- the stops 9 ensure a defined end position of the two cutting and bending jaws 1, 2.
- the first cutting and bending jaws 1 has a cutting edge 3 which interacts with the edge 4 of the second cutting and bending jaw 2 for the cutting process.
- the bending edge 6 interacts with the gripping prongs 10, the connecting wire 14 being bent until it rests on the surface 7.
- the turning angle is determined by the inclination of the surface 7.
- the common pivot point 8 of the two cutting and bending jaws 1, 2 is indicated in the drawing.
- FIG. 2 shows the device in the working position, the second cutting-bending jaw 2 having already been guided up to the stop 9.
- the spacing X between the interface, defined by the cutting edge 3 and the edge 4, and the underside of the printed circuit board 13 is thus set by the structure 5.
- the circuit board 13 rests on the cutting and bending jaws 2.
- the first cutting-bending jaw 1 is still moving towards the stop 9 in the snapshot shown.
- a fixed stop for the circuit board 13 can be attached to the lower tool in such a way that the bending edge 6 of the cutting and bending jaw 2 is in contact with one another defined distance of 0.1 mm below the circuit board.
- FIG. 3 the cutting and bending processes have ended.
- the connecting wire 14 is cut to length, lies against the surface 7 and is bent around the bending edge 6. In this state, the first cutting and bending jaw 1 also abuts the stop 9.
- a more or less strong notch in the connecting wire 14 is achieved by the first cutting-bending jaw 1 by means of the gripping prongs 10.
- This notch effect ensures that the wire is positively gripped during the bending process and is bent in a defined manner around the bending edge 6 of the second cutting and bending jaw 2.
- a sliding of the connecting wire 14 upwards is thereby ruled out, even with low component holding forces, such as in the case of manual assembly.
- Another advantage of this indentation by the gripping prongs 10 results in the further processing in a subsequent soldering process.
- the solderability is increased by tearing open oxide layers that may be present on the connecting wire 14.
- the use of the gripping prongs makes it possible to process connecting wires 14 with different diameters. With relatively small jaw forces, wire diameters of, for example, 0.3 to 1 mm can be processed, round and rectangular cross sections being possible.
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Supply And Installment Of Electrical Components (AREA)
- Electric Connection Of Electric Components To Printed Circuits (AREA)
- Wire Processing (AREA)
Abstract
Ce dispositif permet de parer aux inconvénients inhérents à l'équipement des cartes de circuits imprimés (13) avec des éléments électroniques (12) à fils. Ces inconvénients sont les suivants: difficulté de positionnement des outils de travail par le bas par rapport à un orifice (11) destiné au passage de fils de connection à travers la carte de circuits imprimés (13); manque de support pour les composants (12) entre les opérations d'équipement et de soudure; et enfin fréquence des courts-circuits dus à des fils (14) gauchis sur la face inférieure des cartes de circuits imprimés (13). Les deux mâchoires de sectionnement et de pliage (1, 2) de l'outil proposé coopèrent pour réaliser l'opération de coupure et de pliage, où le fil de connection (14) est coupé à longueur et replié, de telle manière qu'aucune force d'importance ne s'exerce sur la carte de circuits imprimés (13). Un élément supérieur rajouté (5) permet de régler de manière précise la longueur du fil de connection (14). L'effet d'entaille produit par des dents de serrage (10) facilite l'opération de pliage et rend les composants plus faciles à souder.This device overcomes the drawbacks inherent in equipping printed circuit boards (13) with electronic elements (12) with wires. These drawbacks are as follows: difficulty in positioning the working tools from below relative to an orifice (11) intended for the passage of connection wires through the printed circuit board (13); lack of support for components (12) between equipment and welding operations; and finally the frequency of short circuits due to warped wires (14) on the underside of printed circuit boards (13). The two sectioning and folding jaws (1, 2) of the proposed tool cooperate to carry out the cutting and folding operation, where the connecting wire (14) is cut to length and folded back, so that no significant force is exerted on the printed circuit board (13). An added upper element (5) makes it possible to precisely adjust the length of the connection wire (14). The notch effect produced by clamping teeth (10) facilitates the folding operation and makes the components easier to weld.
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19893912175 DE3912175A1 (en) | 1989-04-13 | 1989-04-13 | DEVICE FOR CUTTING AND BENDING CONNECTING WIRE |
DE3912175 | 1989-04-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0467894A1 true EP0467894A1 (en) | 1992-01-29 |
Family
ID=6378625
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19900904226 Ceased EP0467894A1 (en) | 1989-04-13 | 1990-03-14 | Device for cutting to length and bending connector leads |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0467894A1 (en) |
JP (1) | JPH04502384A (en) |
DE (1) | DE3912175A1 (en) |
WO (1) | WO1990012484A1 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006053696A1 (en) * | 2006-11-13 | 2008-05-29 | Häusermann GmbH | Plant for the production of a printed circuit board with additive and integrated and ultrasonically contacted copper elements |
CN101912933A (en) * | 2010-08-13 | 2010-12-15 | 深圳创维-Rgb电子有限公司 | Pin shearing moving cutter of automatic insertion of electronic component |
CN110730612B (en) * | 2019-10-24 | 2021-06-29 | 冷晓勇 | Riveting foot mechanism |
JP7411841B2 (en) * | 2022-01-13 | 2024-01-11 | 株式会社Fuji | Cutting/bending equipment |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA1071389A (en) * | 1977-03-01 | 1980-02-12 | Phillip A. Ragard | Multiple lead cut and clinch mechanism |
JPS6019907B2 (en) * | 1980-08-01 | 1985-05-18 | 三光化学株式会社 | Method for producing aromatic glycidyl ether |
US4425947A (en) * | 1981-11-03 | 1984-01-17 | Usm Corporation | Single point cut and clench mechanism |
DE3523662A1 (en) * | 1985-06-28 | 1987-01-08 | Siemens Ag | Cutting and bending head for the terminating wires of electronic components |
-
1989
- 1989-04-13 DE DE19893912175 patent/DE3912175A1/en not_active Withdrawn
-
1990
- 1990-03-14 JP JP50411990A patent/JPH04502384A/en active Pending
- 1990-03-14 EP EP19900904226 patent/EP0467894A1/en not_active Ceased
- 1990-03-14 WO PCT/DE1990/000189 patent/WO1990012484A1/en not_active Application Discontinuation
Non-Patent Citations (1)
Title |
---|
See references of WO9012484A1 * |
Also Published As
Publication number | Publication date |
---|---|
JPH04502384A (en) | 1992-04-23 |
WO1990012484A1 (en) | 1990-10-18 |
DE3912175A1 (en) | 1990-10-18 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 19911008 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT CH DE FR GB IT LI NL SE |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: BURGER, RUDOLF Inventor name: EIDLING, KARL |
|
17Q | First examination report despatched |
Effective date: 19920903 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN REFUSED |
|
18R | Application refused |
Effective date: 19930306 |