Adhesive bonding and miscellaneous chemical manufacture – Surface bonding means and/or assembly means therefor – With work feeding or handling means
Reexamination Certificate
1999-09-30
2003-02-04
Crispino, Richard (Department: 1734)
Adhesive bonding and miscellaneous chemical manufacture
Surface bonding means and/or assembly means therefor
With work feeding or handling means
C156S583200, C156S556000, C226S122000, C221S025000, C414S411000
Reexamination Certificate
active
06513563
ABSTRACT:
TECHNICAL FIELD
The present invention relates to component feeding method and device, and more particularly to component feeding method and device wherein a component carrying tape, that is constituted by a tapelike member having spaces formed at a predetermined pitch in a lengthwise direction of the tapelike member for accommodating components therein and a cover tape for covering the components, is fed at the predetermined pitch along a component feeding guide towards a component feeding position. The cover tape is peeled off just before the component feeding position so that components are taken out and supplied.
BACKGROUND ART
A conventional component feeding device B is described with reference to FIG.
13
and FIG.
14
. Reference numeral
1
represents a component carrying tape, which is fed at a predetermined pitch along the upper side of a component feeding guide
2
towards a component feeding position. At the distal end on its top of the component feeding guide
2
is mounted a holding cover
3
, which is provided with an opening
4
such as to correspond to the component feeding position and a slit
6
formed by cutting the holding cover from one side at a point before the component feeding position. The cover tape
1
b
of the component carrying tape
1
is drawn out from this slit
6
thereby being peeled off from the tapelike member
1
a
, and is further wound up around a take-up reel
7
. The tapelike member
1
a
is thus fed to the component feeding position in a state that its accommodating spaces
1
c
are exposed, but thanks to the holding cover
3
being above the accommodating spaces
1
c
, the components
5
within the accommodating spaces
1
c
are stably supplied to the component feeding opening
4
without jumping out therefrom. A shutter
8
is provided on the holding cover
3
which opens and closes the component feeding opening
4
concurrently with the component feeding operation, and the construction is such that the component
5
can be taken out in an appropriate attitude by opening the shutter
8
only when a suction nozzle
10
is going to pick up the component
5
.
In
FIG. 13
, reference numerals
14
,
15
and
16
respectively represent a tape reel around which the component carrying tape
1
is wound, a reel support shaft, and a feed wheel disposed at the distal end of the component feeding guide
2
.
17
is a support shaft, around which the take-up reel
7
is rotatably supported and around which a feed lever
20
is supported such as to be rockable. A rocking movement of the feed lever
20
in a direction shown by arrow D causes the shutter
8
to move backwards thereby revealing the component feeding opening and allowing the component
5
to be taken out, and the return rock of the feed lever
20
causes the take-up reel
7
to rotate in a direction shown by arrow C by the function of a ratchet mechanism
19
comprising a ratchet wheel
18
, thereby to take up the cover tape
1
b
and simultaneously to drive the feed wheel
16
to rotate by means of a link/lever mechanism
22
and a ratchet mechanism
23
for the pitch feed of the component carrying tape
1
. A pair of guide pins
24
support the shutter
8
such as to be movable and elongated holes
24
a
are formed in the shutter
8
to-which the guide pins
24
fit in. Link/lever mechanism
22
comprises a link
25
and a rocking lever
26
, and is constructed such that a pin
27
provided at the distal end of the rocking lever
26
engages with a notch
24
b
formed by cutting off the shutter
8
.
In the conventional component feeding device B described above, however, the construction is such that, by the returning rocking movement of the feed lever
20
, the cover tape
1
b
is peeled off from the tapelike member
1
a
as shown by arrow c at the same time when the component carrying tape
1
is moved in a direction shown by arrow a while the shutter
8
moves in a direction shown by arrow b thereby covering the component feeding opening
4
as shown in
FIG. 14
, i.e., the peeling off of the cover tape
1
b
and the pitch feed of the component carrying tape
1
occur simultaneously. There was thus a problem that the component
5
in the accommodating space
1
c
is displaced and may even stand up upon the shock generated by the above two actions, and as the attitude of the components
5
becomes irregular, the component
5
positioned at the component feeding opening
4
may not be picked up by the suction nozzle
10
in an appropriate attitude, as a result of which a mounting failure occurs.
In view of the above problem in the prior art, an object of the present invention is to provide a component feeding method and device by which components can be supplied in an appropriate attitude towards a component feeding position.
DISCLOSURE OF THE INVENTION
The present invention provides a component feeding method wherein a component carrying tape constituted by a tapelike member having accommodating spaces formed at a predetermined pitch in a lengthwise direction of the tapelike member for accommodating components therein, the components being covered by a cover tape, is fed at a predetermined pitch and the cover tape is peeled off before a component feeding position, whereby a component is taken out from the accommodating space thereof and fed at the component feeding position, characterized by having processes of: opening a shutter that covers the upper surface of the component carrying tape at the component feeding position when the component carrying tape is paused and at the same time peeling off the cover tape; taking out the component and feeding the same; and closing the shutter and at the same time feeding the component carrying tape at the predetermined pitch. Since the process of peeling off the cover tape and the pitch feed process of component carrying tape are separated, it is prevented that the component within the accommodating space is greatly displaced causing its attitude to become irregular due to vibration upon the peeling off of the cover tape coupled with the vibration upon the pitch feed of the component carrying tape, whereby it is ensured that the component is picked up in an appropriate attitude and thus a highly reliable mounting operation can be realized.
The present invention also provides a component feeding apparatus wherein a component carrying tape constituted by a tapelike member having accommodating spaces formed at a predetermined pitch in a lengthwise direction of the tapelike member for accommodating components therein, the components being covered by a cover tape, is fed at a predetermined pitch and the cover tape is peeled off before a component feeding position, whereby a component is taken out from the accommodating space thereof and fed at the component feeding position, characterized by having: a shutter movable between a position where it covers the upper surface of the component carrying tape at the component feeding position and a position where it opens the component feeding position, the shutter being provided with a slit through which the cover tape peeled off from the component carrying tape is passed and drawn out; and peeling-off and taking-up means for pulling the cover tape drawn out through the slit so as to peel off the cover tape from the component carrying tape and for winding up the peeled-off cover tape. By forming a slit in the shutter for peeling off the cover tape, the cover tape can be peeled off in synchronism with the opening movement of the shutter separately from the pitch feed process of the component carrying tape. The above method can be thereby implemented using a conventional basic construction of the pitch feed and peeling off mechanism and their driving means.
Furthermore, by providing a magnet for magnetically attracting the component in the component feeding guide between the area where the cover tape is peeled off and the vicinity of the component feeding position, the component can be held to the bottom of the accommodating space at the time of pitch-feeding the component carrying tape or peeling off th
Ando Takashi
Inoue Mamoru
Kawaguchi Teruo
Kubota Shuuichi
Nagasawa Yuji
Crispino Richard
Purvis Sue A.
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