close

Вход

Забыли?

вход по аккаунту

?

Патент USA US3093174

код для вставки
June 11, 1963
3,093,164
c. LENz ETAL
LEAD-WIRE BENDING APPARATUS
2 Sheets-Sheet 1
Filed March 31. 1960
FIG. l.
GOV
»N /561'
32
"IEL/
30
FIGB.
June 11, 1963
c. LENZ ETAL
3,093,164
LEAD-WIRE BENDING APPARATUS
BY
Ñ
_1.
1777-ÚZA/E Y,
States arent
3,093,164
Patented June 11, 1963
2.
3,093,164
Cari Lenz, deceased, late of Wayne, NJ., by Earl J.
Aberle, executor, Wayne, and Richard Haseli, Denville,
NJ., ~ahssignors to Westinghouse Electric Corporation,
For a better understanding of the invention reference
should be had to the accompanying drawings wherein
LEAD-WIRE BENDING APPARATUS
like numerals of reference indicate similar parts through
out the several views and wherein:
East Pittsburgh, Pa., a corporation of Pennsylvania
Filed Mar. 31, 1960, Ser. No. 19,032
6 Claims. (Cl. 140-71.6)
ing station of a filament-mounting machine and showing
an incandescent-lamp stem after it has been indexed
into the lead-wire bending station adjacent the improved
lead-wire bending apparatus of -the present invention pre
paratory for the start of the lead-Wire bending operation;
The present invention relates .to apparatus for manu
FIG. l is a front-elevational view of a lead-Wire bend
facturing incandescent lamps and, more particularly, to
FIG. 2 is a side-elevational view taken from the right
a device for bending the lead wires of the stern for an
side of FIG. l;
FIG. 3 is a plan view taken along the line III--Ill of
incandescent lamp.
Heretofore filament mounts for vertical-ñlament in
candescent lamps have been fabricated on a conventional
mount-making machine of the Itype shown in U.S. Patent
No. 1,907,532, issued `May 9, 1933, to l. Flaws, Ir. At
one of the work stations of this conventional mount
FIG. 2 in the direction of the arrows;
FIG. 4 is an enlarged fragmentary front-elevational
view similar to FIG. l;
FIG. 5 is a horizontal-sectional View taken along the
line V-V of FIG. 4 in the direction of the arrows;
FIG. 6 is a view similar »to FIG. 4 and showing the
making machine, a right angie bend is formed in each of
the lead wires (preparatory for the automatic mounting 20 position of lthe operating elements of the lead-wire bend
thereon of a vertically disposed filament) by a bending
ing apparatus after the lead wires have been bent to the
apparatus similar to the type shown in U.S. Patent No.
desired configuration preparatory for the disengagement of
2,683,473, issued July 13, 1954, ‘to J. Flaws, Ir. et al.
the bending members from the now-bent lead wires;
The sharp bends produced in such lead wires by the
FIG. 7 is a view similar to FIGS. 4 and 6 and show
conventional bending apparatus tend .to make the lead 25 ing the position of the operating elements of the lead
wires stick to the bending device after formation. As
wire bending apparatus after the bending members have
a result, these stuck formed ylead wires are deformed by
been disengaged from the now-bent lead wires;
the retraction of the conventional bending apparatus,
FIG. 8 is a perspective view of the bending member;
thus producing a defective stem. This deformation of the
FIG. 9 is a perspective view of the anvil and its as
stem is further enhanced by the ductile characteristics of 30 sociated pawl.
the lead wires themselves. As another disadvantage the
Although the principles of the invention are broadly
conventional lead-wire bending apparatus is not provided
applicable to the bending of the lead wires of stems for
with a means for readily varying the amount of over bend
iluorescent lamps, discharge devices and incandescent
in lthe lead wires to compensate for «the spring back in
lamps, the invention is particularly adapted for use in
such lead wires, which spring back varies from one 35 conjunction with the bending of the lead wires of in
group oi’ lead wires to another.
candescent-lamp stems preparatory for the mounting
It is the general object of the present invention to
thereon of a vertically disposed lilament and hence it _has
avoid and overcome the foregoing and other difficulties
been so illustrated and will be so described.
'
of and objections to prior art practices by the provision
With speciñc reference to the form of the present ín
of an improved apparatus for bending the lead wires of a 40 vention illustrated in the drawings, and referring par
stem for an incandescent lamp.
ticularly to FIGS. l and 2, a frame for the improved
Another object of the present invention is the provision
lead-wire bending apparatus of the present invention is
of an improved apparatus for bending the lead wires of
indicated generally by the reference numeral 10, which
incandescent lamp stems to a desired configuration, which
frame 10 is located at a lead-wire bending station of a
yapparatus is adapted to `eliminate the sharp bend in the 45 filament-mounting machine of the type shown in the
lead wires thereby permitting each of the bending mem
above-mentioned U.S`. Patent No. 1,907,532.
bers to release itself from engagement with the associated
To vpermit the horizontal reciprocation of the irn
bent lead wire preparatory for retraction of the improved
proved lead-wire bending apparatus into and out of en
lead-wire bending apparatus.
gagement with lead wires 12L and 121' of an incandescent
A further object of the present invention is the pro 50 lamp stem 14, such lead-wire bending apparatus has a
vision of an improved apparatus for bending the lead
horizontally reciprocable carriage 16 (FIGS. l-7). This
Wires of incandescent-lamp stems, which apparatus is
carriage 16 comprises essentially a slide block 18 (FIG.
adapted Ito readily provide any desired amount of over
l) mounted in a dovetail on the frame 10 and a pair of
bend in such lead wires.
side plates 20L and 201' upstanding from the slide block
The aforesaid objects of the invention, and other` ob 55 18. In order -to cause the movement of the carriage 16
jects which will become apparent as the description pro
a distance “d1” (FIG. 2) to the left from the solid-line
ceeds, are achieved by providing an improved apparatus
position shown in FIG. 2 to the dotted-line position
for bending a supported lead wire of an incandescent-lamp
shown in such figure, a roller 22 on the slide block 1‘8
stem, which apparatus has a bending member rotatable
is biased by means of a compression spring 24 into en
on a shaft and engageable by means of a disengageable 60 gagement with a cam 26 upstanding from a platform 28.
coupling means with an anvil which is affixed to the shaft,
This platform Z8 is mounted on an operating rod 30
the bending member being adapted while in a lead-wire
which is reciprocable 'vertically by a conventional cam
receiving position to cooperate with a guide means for the
driven linkage (not shown) connected to the operating
reception of such lead Wire between the anvil and the
rod 30. During such reciprocation `the platform 28
guide means, and such :bending member being then ro 65
rides on a vertical guide 32 (FIGS. 1 and 2).
.
tatable to bend the lead wire around said anvil to -the
As shown in FIG. 2, upward movement of the plat
desired angular configuration and to cause the coupling
form 28 and operating rod 30 a distance “d2” from the
means to thereafter engage an adjustable stop means,
solid-line position shown in such figure causes the cam
which disengages the bending member from .the anvil
thereby freeing the bending member from the now bent 70 26 to move the carriage 16 to the left (against the ac
tion of the spring 24) a distance “d1” from the lsolid-line
lead wire preparatory for the retraoting movement of
the bending apparatus.
position shown in such figure to the dotted-line position
3,093,164.
3
4
shown therein. During this lateral movement of the
carriage 16 to the left, the stationary lead wires 12L and
12r- are positioned in movable guide slots 34L and 34r
respectively, preparatory for the lead-wire bending op
eration. The guide slot 34L (FIG. 3) is defined on one
side by a stationary upper guide 36L and a bending lug
such bolt has a compression spring disposed between the
slide retaining plate 64L and the head of the bolt 60L.
When the pusher plate S8 (FIGS. 1 and 2) engages
the bottom portion -of the elevating rods 56L and S61',
37L of a bending member SSL (operable at the start of
the lead-wire bending operation as a lower continuation
of the stationary upper guide 36L, FIGS. l and 4) and
such guide slot 36L is defined on the other side by a coni
cally-tipped anvil 40L. As shown in FIG. 8 the bend
ing lug 37L projects longitudinally from a hub-like body
39L of the bending member 38L. In like manner the
guide slot 34r is deñned on one side by a stationary upper
guide 361' and a bending lug 37r of a bending member
38r and on the other side by a conically-tipped anvil 40r.
The stationary upper guides 36L and 36r are mounted
on the side plates 20L and 20r respectively. As herein
after explained in detail, the bending members BSL and
38r are rotatable with the anvils 40L and 40r respectively
(about a common pivot) to bend the respective lead
wires 12L and 12r around the anvils 40L and 401A to the
desired angular configuration.
Since the (upper left-hand) lead-wire bending device
(FIGS. 1 and 4) comprising essentially the anvil 40L
and the bending member 38L is substantially identical in
structure and operation to the (lower right-hand) lead
wire bending device comprising essentially the anvil 401'
the slide blocks 44 are moved upwardly a distance “d3”
(FIG. 2) from their starting position shown in FIG. 4 to
the final position shown in FIG. 7. During this upward
movement the pinion gear 48L which is in engagement
with a stationary rack 6SL (mounted on the side plate
20L) is simultaneously rotated in counterclockwise di
rection through a predetermined angle, as viewed in
FIGS. 4, 6 and 7. As a result the shaft 42L, anvil 40L
(af?xed to the shaft 42L) and the bending member 38L
(connected by the pawl SOL to the anvil 40L) are also
rotated in counterclockwise direction from the starting
position shown in FIG. 4 to the intermediate position
shown »in FIG. 6, thus causing the rotating anvil 40L to
ride upwardly on the stationary lead wire 12L and the
rotating bending member 38L to bend the lead wire lZL
around the anvil 40L to the desired configuration.
By the time the above-described operating members
have reached the intermediate position shown in FIG. 6,
the bending of the lead wire 12L has been completed and
an operating end 70L of the pawl SOL is about to engage
a stop means, such as a stop 72L, adjustably mounted on
the stationary upper guide 36‘L (FIG. 3).
It will be appreciated by those skilled in the art that
by varying the distance which the elevating rod 56L de
pends below the carriage 16 and the distance the stop
and bending member 38r, it is deemed suflicient to describe
only one (upper left-hand of the lead-wire bending de 30 72L projects beyond the stationary upper guide 36L, the
amount of overbend provided in the lead wire 12L may
vices. It will be understood that all identical reference
numerals refer to the same part with the letter follow
be varied as desired.
ing all such reference characters indicating either the
Further rotation of the shaft 42L and the anvil 40L
right hand (“r”) or left hand (“L”) element, as viewed 35 affixed thereto from the intermediate position shown in
FIG. 6 to the final position shown in FIG. 7 causes the
in the drawings.
coupling end 53L of the pawl SGL to be withdrawn
As shown in FIG. 5, the anvil 40L is añîxed to a ro
(against the action of the torsion spring S4L) from the
tatable member, such as a shaft 42L, journalled in a
longitudinal groove SSL in the body 39L of the bending
mounting means, such as a slide block 44L, which slide
block 44L is vertically reciprocable in the carriage 16 as 40 member 38L so that the latter gravitates in clockwise di
rection from the intermediate position shown in FIG. 6
hereinafter related. From a consideration of FIG. 5 it
to the final position shown in FIG. 7, thus releasing the
will be apparent that the shaft 42L is secured against
now-bent lead wire 12L preparatory for retraction of the
longitudinal displacement in the slide block 44L by a col
lar 46L on one end of such shaft 42L and a pinion gear
lead-wire bending device.
48L on the opposite side of the slide block 44L, both of
which are pinned to the shaft 42L. The anvil 40L is sim
distance “d1” (FIG. 2) from the dotted-line position
Thereafter, the carriage 16 is retracted to the right a
shown in FIG. 2 to the solid-line position shown in such
figure (by the lowering of the platform 28 and the cam
26 and operation of 4the spring 24). Such retraction is
gear 48L and the anvil 40L and freely rotatable on the
shaft 42L. The coupling means utilized to cause the 50 accomplished without deforming the now-formed and re
bending member SSL to normally rotate with the anvil
leased lead wire 12L.
As the pusher plate 58 nears the end of its downward
40L comprises a pawl SOL (FIG. 9) pivotable at S2L
travel (the solid-line position in FIG. 2), such pusher
on the anvil 40L and having a coupling 'end 53L biased
plate 58 engages a collar 74 on a lowering rod 76L, which
by a torsion spring 54L into engagement' with a longi
tudinal slot SSL (FIGS. 5 and 8) in the body 39L of 55 rod 76L is adjustably mounted in the slide block 44L, de
pends below the carriage 16 a greater distance than the
the bending member 38L. `As shown in FIGS. l and 4,
elevating rod 56L, and extends through the pusher plate
the pawl SOL initially disposes -the bending lug 37L on
58. Thereafter, continued downward movement of the
the left side of the lead wire 12L as a lower continua
pusher plate 5S and the platform 28 to the solid-line posi
tion of the fixed upper guide 36L.
»
In order to utilize the further continuous upward 60 tion shown in FIG. 2, simultaneously lowers the slide
block 44L and causes the stationary rack 68L to rotate
movement of the platform 28 a distance “d3” (FIG. 2)
the pinion gear 48L, `the shaft 42 (which carries `gear
as the drive means for elevating the slide block 44L (and
48L), the anvil 40L (on the shaft 42L) in clockwise di
to simultaneously cause the bending member 38L to form
rection thus moving the operating end 70L of the pawl
the lead wire 12L about «the anvil 40L as hereinafter
related), the slide block 44L carries a contact means, 65 SOL away from the stop 72L and permitting the torsion
spring 54L to move the coupling end 53L of the pawl SOL
such as an adjustably mounted elevating rod S6L (FIG.
into engagement with the longitudinal groove SSL in the
l), which rod S6L depends below the carriage 16 and is
bending member SSL. Thereafter further clockwise ro
engageable by a pusher plate S8 mounted on the platform
tation of the anvil 40L returns the bending member 38L
28. To provide biasing means so that the slide block
44L will ride along the side plate 20L in frictional en 70 (now coupled to the anvil 40L) to the starting position
shown in FIG. 4 where the bending lug 37L of such bend
gagement therewith during such upward movement, each
ing member 38L again functions as a lower continuation
of a pair of headed bolts 60L is threadably secured
of the stationary upper guide 36L preparatory for the next
(FIG. 5) in the slide block 44. Each bolt 60L extends
leadwire bending operation.
through a clearance slot 62L (FIG. 5) in the side plate
It will be recognized by those skilled in the art that the
20L and through a slide-retaining plate 64L, and each
ilarly pinned to the remaining end of the shaft 42L, with
the bending member 38L retained between the pinion
3,093,164
6
5
4. The apparatus as specified in claim l, wherein said
coupling means comprises a pawl pivoted on said anvil,
a slot is provided on said bending member, said pawl is
spring biased into engagement with said slot for arresting
said pawl to `connect said bending member Ito said anvil,
and said pawl `operates to contact lsaid stop to free said
pawl from said slot and disconnect said bending mem
ber from said anvil.
5. The apparatus as specified in claim 4, wherein said
objects of the present invention have been achieved by
the provision of aan improved lead~wire bending apparatus
which eliminates sharp bends in the lead wires and is op
erable to automatically release itself from engagement
with the bent lead Wires preparatory for retraction of such
lead-wire bending apparatus Without .deformation to the
bent lead wires. Additionally, such improved lead-wire
bending device is operable to provide any desired amount
of overbend in such lead wires, thus readily adapting itself
y‘for use with groups iof lead Wires having variable spring
pawl when freed from engagement with said slot permits
said bending member to gravit-ate from contact with the
bent portion of said lead wire.
6. Apparatus for bending a supported lead Wire of an
‘back characteristics.
While in accordance with the patent statutes, a pre?erred
embodiment of the present invention has been illustrated
and `described in detail, it is to be particularly understood
that the invention is not limited thereto or thereby.
We claim:
electric lamp stem, said apparatus comprising:
15
(c) a rotatable member on said mounting means;
(d) an anvil affixed to said rotatable member;
(e) a :bending -member rotatable on said rotatable
1. Apparatus `for bending a supported lead wire of `au
electric lamp, said apparatus comprising:
(a) mounting means;
20
(b) a rotatable member on said mounting means;
(c) `an anvil affixed to said rotatable member;
(d) a bending member rotatable on said rotatable mem
ber, the portion of said lead wire desired to be bent
positioned between said anvil and said bending
member;
(a) 'a carriage;
(b) mounting means reciprocable on said carriage;
25
(e) coupling means aiiixed to said anvil for iirst con
necting and later disconnecting said bending member
from said anvil;
(f) drive means operatively associated with said rotat
able member for causing rotation of said anvil and
said bending member connected thereto; and
(g) stop means añixed to said mounting means for lim
iting the rotation of said bending member `and for
causing said coupling means to disconnect said bend
ing member from said anvil; the components com 35
prising said apparatus coacting in the following
fashion:
(l) rotation of said rotatable member by said
`drive means through a predetermined angle
causing said bending member .and said anvil to 40
rotate and to bend through 'a predetermined
vangle the portion of said lead Wire positioned
therebetween;
(2) further rotation of said rotatable member -by 45
said ‘drive means causing said coupling means «to
abut against said stop means and disconnect said
bending member from said anvil; and
(3) said bending member upon being disconnected
from said anvil operating to move from contact
with said supported lead wire to permit said ap
paratus to move from engagement with said sup
ported lead wire.
2. The »apparatus as specified in claim l, wherein said
stop means is adjustable to regulate :the predetermined 55
angle through which said rotatable member will rotate
before said coupling means contacts said stop» means.
3. The apparatus as specified in claim 1, wherein said
drive means is `operatively associated with said rotatable
member through an adjustable contact to permit regula 60
tion of the point of initial rotation of said notatable
member.
member;
(f) coupling means affixed to said anvil for ñrst con
necting and later >disconnecting said bending member
Ifrom said anvil;
(g) iirst drive means connecting to said carriage for
moving said anvil and said bending member about
the portion of said lead Iwire desired to be bent;
(h) second drive means operatively associ-ated with said
rotatable -member for causing rotation of said anvil
and said bending member connected thereto; and
(i) stop means añ‘ixed to said apparatus for limiting the
rotation of said bending member and for causing
4said coupling means `to disconnect said bending
member from said anvil; the components comprising
said apparatus coasting in the following fashion:
(l) rotation or’ said rotatable member by said sec
ond drive means through a predetermined angle
causing said -bending mem-ber and said anvil to
rotate and to bend through .a predetermined
angle the portion of said lead wire positioned
therebetween;
(2) further rotation of said rotatable member by
said second drive means causing said coupling
means to abut against said stop means and dis
connect said bending member trom said anvil;
and
(3) said bending member upon being disconnected
from said anvil operating to move from contact
with said supported lead wire to permit said ap
paratus to be moved from engagement with said
«supported lead wire.
References Cited in the iile of this patent
UNITED STATES PATENTS
1,277,234
1,305,990
1,821,894
McKenna ____________ __ Aug. 27, 1918
Barry ________________ __ June 10', 1919
Otaka ________________ __ Sept. 1, 1931
2,082,079
Palucki _______________ __ June 1, 1937
2,677,398
2,877,809
Medendorp ____________ .__ May 4, 1954
Zapf ________________ .__ Mar. 17, 1959
Документ
Категория
Без категории
Просмотров
0
Размер файла
638 Кб
Теги
1/--страниц
Пожаловаться на содержимое документа