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
  • H05K13/0061—Tools for holding the circuit boards during processing; handling transport of printed circuit boards

Definitions

• the present invention refers to an unloading machine for plates, particularly printed circuits, comprising a mobile platform suitable for the transfer of the plates coming from a certain work phase to a basket-type container which feeds them to a subsequent processing.
• the basket-type container comprises a series of overlapped seatings, each consisting of opposed guides made on a pair of side walls, able to be positioned at a distance which can be adjusted according to the width
• the basket-type container is moved vertically in steps with respect to the loading and/or unloading device, in such a way as to position the various seatings in sequence at the level of the mobile platform of the loader-unloader, which may be made up of a series of motorized rollers, a conveyor belt, or the like.
• the transfer of the circuits is carried out by means of a pusher, which comes down from such arm at regular intervals and because of which the loader cannot be used for plates of different lengths 5. Moving forward in succession on the mobile platform, unless the stroke of the pusher is adjusted for every plate. This is also due to the fact that the depth of the plate collection basket is adjusted according to the (fixed) lenght of the plates.
• the aim of the invention is to eliminate the drawbacks described above.
• the basket-type container unloader for printed circuits according to the invention, is defined in the appended claims.
• the invention relates also to a particular type of basket-container suitable for receiving the plates. Further characteristics of the invention will be understood more clearly from the detailed description which follows, referring to one of its purely exemplary, and therefore non-restrictive embodiments, illustrated in the appended drawings, in which:
• Figure 1 is a partial axonometric view, with some parts in vertical section, of the unloader for printed circuits according to the invention, with the basket-type container positioned to receive the circuits;
• Figure 2 is a view similar to the one of figure 1 , with the centring 10. means in the working phase;
• Figure 3 is a longitudinal section of the unloader, showing in particular the parts indicated with the letters A and B in figure 1 ;
• Figures 4, 5 and 6 show, in succession, views similar to the one in 15. figure 1 of the pigeon-holing of a plate in the basket-container;
• Figure 7 is an axonometric view of just the basket-container in the position for normal use
• Figure 8 is an axonometric view of the basket-container tilted through 20. 90° with respect to the position in figure 7;
• Figure 9 is a partial plan view of the basket-type container.
• the plate unloader particularly for printed circuits, according to the invention, referenced with 1, is only partially illustrated and comprises a mobile platform 2, made up of motorized rollers 3, on which the plates are fed in the direction of the arrows shown in figures 1 and 2, to be transferred onto a mobile basket-type container 5 on wheels 6.
• the "trailer-mounted basket” 5 comprises a fixed base frame 7 and a 5.
• the possibility of tilting the basket-container through 90° is useful because it allows the printed circuits, that are pigeon-holed in it, to be extracted in a vertical as well as in a horizontal direction.
• the mobile frame 8 of the basket-container 5 is locked in a vertical 15. position by a wedge means 11 (figures 7 and 8) , and its tilting is facilitated by gas springs 12, operating between the fixed frame 7 and the mobile frame 8.
• Two mobile walls 13 are positioned inside the rectangular frame 8, consisting of interchangeable modular elements 14 provided inside with
• a bracket 21 is foreseen on the edge of each mobile wall 13 (the one for the entrance of the circuits), which can be rotated through a certain angle, as shown in diagram form in figure 9, so that it comes from the position illustrated with a continuous line to the position shown with a dotted 10. line, where it blocks the circuits 4 "pigeon-holed" in the basket-container at their end.
• the unloader 1 To return to the unloader 1 , it comprises a pair of centering devices 22, on its front part, movable transversely to the mobile platform 2, at the same speed and in the opposite directions, so as to position the
• Respective pairs of conical profile idle wheels 24 are foreseen on the centring devices 22, positioned on the vertical of the last two motorized rollers 3 and able
• Respective cylinders with horizontal axes 27 are also foreseen on the centring devices 22, which operate corresponding cone-shaped guides 28, 25. whose narrow parts come into a position exactly corresponding to the opening of the guides 15 foreseen on the mobile walls 13 of the basket-container, to facilitate the introduction of the circuits 4, without the possibility of the latter jamming against the walls 13.
• a balance lever 29 is foreseen, operated by a cylinder 30 and movable on a track 31, to accompany the plates 4 towards the basket container 5, when they are no longer supported by the rollers 3.
• the last motorized roller 3 unlike the others, does not cross the centre line of the mobile platform 2, but is divided into two "half-rollers" to allow the balance lever 29 to be raised.
• basket-container 5 is positioned at the front of the unloader 1, as shown in figure 1, ready to receive the plates 4.
• the unloader 1 is provided with a fork lift (not shown) for raising the basket-container 5 in steps after each introduction of the plates.
• the plates 4 for printed circuits 20. arriving from the previous processing machines enter the mobile conveyor platform 2 of the unloader 1 (figure 1) .
• the centring devices 22 are set in operation at the same 25. time towards the longitudinal center line of the machine, in such a way as to centre the plate 4 perfectly with the longitudinal axis of the unloader, as shown in figure 2.
• the cilinders 25 are set in operation which move the idle wheels 24 downwards.
• These wheels are made of relatively soft material, such as rubber, and press the edges of the 5.
• the unloader according to the invention is not bulky above the roller platform, it allows printed circuits of different lenghts to be 25. transferred without the adoption of any special measures, and it eliminates the danger of such circuits jamming against the side walls of the basket-type container.

Landscapes

• Engineering & Computer Science (AREA)
• Manufacturing & Machinery (AREA)
• Microelectronics & Electronic Packaging (AREA)
• Intermediate Stations On Conveyors (AREA)
• Centrifugal Separators (AREA)
• Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=11192460

Family Applications (1)

Country Status (2)

Cited By (2)

Citations (2)

• 1990
  • 1990-11-23 IT IT02216490A patent/IT1244155B/it active IP Right Grant
• 1991
  • 1991-11-14 WO PCT/IT1991/000096 patent/WO1992010080A1/en unknown

Patent Citations (2)

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