close

Вход

Забыли?

вход по аккаунту

?

Патент USA US3045722

код для вставки
July 24, 1962
L.. J. MOELLER
3,045,712
METHOD oF AND APPARATUS FOR FORMING CAGE-LIKE
TERMINAL STRIP sUBAssEMBLIEs
Filed Aug. 7, 1958
2 'sheets-sheet 1
ì.
AM„èëA ìë
___k
A...
V
maxl
INVENTOR
¿I Jßaeílef'
l
ATT RNEY
July 24, 1962
METHOD
3,045,712
IKE
ice
United States Ptent
2
1
3,045,712
METHOD OF AND APPARATUS FOR FORMING
CAGE-LIKE TERMINAL STRlP SUBASSEMBLIES
Lowell J. Moeller, Indianapolis, Ind., assigner to Western
Electric Company, Incorporated, New York, N.Y., a
corporation of New York
Filed Aug. 7, 1958, Ser. No.. 753,724
2 Claims. (Cl. 140-71)
3,645,712
Patented July 24, 1962
ranged in a predetermined spaced relationship, and sever
ing all of the wires in a group simultaneously.
Apparatus embodying certain aspects of the present in
vention may include means for twisting a number of wires
in a group of wires about the longitudinal axes thereof
in one direction and the remaining wires of the group in
the opposite direction, means for feeding the wires in sub
stantially parallel relationship along their longitudinal
aXes and feeding the leading ends thereof through aper
This invention relates to methods of and `apparatus lfor l0 tures in end or retaining plates arranged in predetermined
spaced relationship and means for severing all of the wires
forming cage-like terminal strip lsubassem'blies, and more
particularly, -although not exclusively, to methods of -and
of the group simultaneously.
Other objects and features of the present invention will
apparatus for forming cage-like terminal strip -subassem
blies including a plurality fof apertured plates having wire
be more readily understood from the following detailed
15 description when read in conjunction with the accompany
terminals in the apertures thereof.
ing drawings in which:
The subassemblies may be utilized in the formation of
FIG. 1A is a fragmentary, fractional, `side elevational
View of a twisting and assembling apparatus embodying
in my copending application Serial No. 453,526 ñled on
certain aspects of the present invention;
September 1, 1954, now Patent 2,885,651, which are uti
lized in the communications industry to facilitate the 20
FIG. 1B is Ia fragmentary, fractional, side elevational
view of the remaining portion of the apparatus embody
wiring of relay racks or other telephone apparatus re
ing certain aspects of the present invention illustrated in
quiring a multiplicity of circuit connections.
A completed cage-like subassembly includes a pair of
FIG. lA, which when combined with FIG. l1A forms a
fragmentary, elevational view of the complete apparatus;
generally rectangular, substantially identical, end or re
FIG. 2 is an end view of the portion o-f the apparatus
taining plates formed from a stili plastic material such as 25
polystyrene or the like. Each of the end plates are pro
of FIG. 1A;
FIG. 3 is a fragmentary, top plan view of a portion
vided with axially spaced apertures. The apertures are
of the apparatus illustrated in FIG. 1A;
square in cross section and are designed to receive a
FIG. 4 is a fragmentary, cross-sectional view of a por
plurality of elongated rod-like terminals made up of
hard drawn brass wire or the like which is capable of 30 tion of the apparatus illustrated in FIG. lA as taken along
being twisted axially and retaining a twisted set.
line 4-4 thereof; and
FIG. 5 is a perspective view of a terminal strip sub
In the formation of the cage-like subassembly the aper
assembly produced by the apparatus illustrated in FIGS.
tured plastic retaining plates are held adjacent to each
lA and 1B with the cast resin portion of the assembly in
other, or together in face to face contact while the pre
twisted terminals are inserted into the apertures therein. 35 dicated in phantom lines.
Referring now to the drawings and more particularly
The plastic retaining plates are then moved apa-rt a pre
to FIG. 5, there is shown a terminal strip subassembly,
determined distance and become locked to the wire ter
designated generally by the numeral 11. The subassem
minals by resultant torques set up as a result of the pre
bly 11 includes two spaced plastic end plates 12 and 13
twist of adjacent terminals in opposite directions.
Previously it had been a standard practice to assemble 40 which are provided with a plurality of apertures 14 and
16 arranged in live rows with each row containing eight
pretwisted, precut terminals individually by hand through
apertures. The end plates 12 and 13 may be of slightly
retaining plates which were held together in the proper
different dimensions but the positions of the apertures
position and then separating the plates to lock the sub
14-14 in the end plate 12 correspond exactly with the
assembly together. The high cost of labor required to
form the subassemblies in that manner made it desirable 45 positions of the apertures 16-16 in the other end plate
13. VIn the completed subassembly 11 the end plates 12
to develop more eliicient methods of forming and assem
cast resin terminal strip assemblies :such as are disclosed
bling the Various parts of the subassembly and to develop
and 13 are spaced apart a predetermined distance as
illustrated in FIG. 5.
The ‘apertures 14 and 1‘6 in the end plates 12 and 13
assembly could be »assembled automatically through the
cooperative arrangement of various elements »of the auto 50 are designed for receiving the leading ends of a plurality
automatic loading machines in which each individual sub
of rod-like elongated supply wires 17-17 (FIGS. 1A, 2
matic machine.
Accordingly, it is an object lof the present invention to
provide new and improved methods of and apparatus for
and 4).
automatically.
23--23, 2'4-24 or 26-26 in each row are normally of
The supply wires 17-17 are cut to predeter
mined lengths after the leading ends thereof have been
inserted into the aligned apertures 14 and 16 of the end
forming cage-like terminal strip subassemblies.
It is another object of the present invention to provide 55 plat-es 12 and 13 and pushed a predetermined distance
methods of and automatic apparatus for twisting, as
therethrough to form rows of terminals 21, 22, 23, 24,
sembling and cutting wires or terminals lof the subassembly
and 26 of definite lengths. The terminals 2.1-2.1, ï22--22,
equal lengths but the lengths of »the terminals in different
It is a lfurther object of the present invention to pro~
vide new and improved apparatus for feeding and Isimul 60 rows are of different lengths. Normally the ends of all
of the terminals 21-21, 22-2‘2, 231-23, 24-24 and
taneously twisting a group of wires being fed into aper
26--26 on one end of the terminal strip subassembly 11
tured retaining plates of a cage-like subassembly and
lay in a single plane perpendicular to the longitudinal
severing all of the wires of the group simultaneously.
A method embodying certain aspects of the present in 65 axes thereof, but the other ends of the terminals in
various rows are staggered. During the assembly of the
vention may include the steps of twisting a number of the
terminals 21-21, 22-22, 23423, 24-24 and 26-26 in
wires in a group of wires about the longitudinal axes
the end plates 12 and 13 to form the subassembly 11,
thereof in one direction and the remaining wires ‘of the
the terminals are provided with predetermined -axial pre
group in the opposite direction while simultaneously feed
ing them in a substantially parallel spaced relationship 70 twist sets. One half of lthe terminals 21-21, 22-22,
23--23, 24-24, and 26-26 in each row are given a
along their longitudinal axes, inserting all of the wires in
clockwise axial pretwist set and the other half a counter
` each group into apertures in end or retaining plates ar
3,045,712
n
4
¿ì
clockwise set of the same magnitude, with adjacent termi
nals having opposite hand twists.
In ‘the assembly of the end plates 12 and 13 and the
terminals to form the subassembly 11, the end plates 12
and 13 are brought together in close proximity with the
FIG. 1B, and to release the wires ‘17--17 when moved
in the other direction, to the left as viewed in FIG. lB.
In this manner the two clamping units 41 and 42 of the
hitch-feed mechanism 36 cooperate to feed .the leading
ends of all of the eight supply wires 17--17 simultaneously
intermittently into and through the corresponding aligned
corresponding apertures 14 and 16 in precise mating
relationship. The leading ends of the row of eight supply
apertures 14-14 and 16-16 formed in the plastic end
plates 12 and 13.
The eight supply wires 17-17 extend from the vertical
straightening rolls 3‘4 to the stationary portion 41 of the
feed mechanism 36 through eight converging tubular
guides 43. The movable clamping unit 42 is designed to
grip the wires 17-17 intermittently and feed them simul
wires 17-17 are fed simultaneously through the cor
responding aligned -apertures 14-14 and 1‘6-16 a prede
termined distance.
The supply wires 17-17 are then
severed by suitable cutting means to form one row of
terminals 21-21 of predetermined lengths. The leading
ends of the row of eight supply wires 17-17 are indexed
successively to adjacent rows of apertures 14-1‘4 and
taneously through eight telescoping guide tubes 44 at
16-16 and ‘the above described operation is then repeated
to form second, third, fourth and fifth rows of terminals
tached flexibly to a vertical movable apertured guide
member 46 forming part of a wire locating and shearing
22-22, 23~23, 24-24 and 26-26, respectively.
mechanism, designated genearlly by the numeral `47, which
may be similar to that disclosed in greater detail and
The supply wires 17-17 are given predetermined axial
pretwist sets and straightened in a subsequent portion of
claimed in application Serial No. 753,683 filed on August
the path of travel of the supply wires 17-17 as they a-re 20 7, 1958 in the name of E. D. Hanson, now Patent 3,004,
565. The wires 17-17 are fed through the apertured
fed longitudinally through the apertures‘ 14-1'4 and
guide member 46 and into the associated apertures 14-14
16-16 in spaced parallel relationship so that each of
and 16-16 in the end plates 12 and 13 which are held
the wires 17-17 is substantially straight and adjacent
closely together and in matching alignment by relatively
wires have opposite hand, axial, pretwist sets in them be
fore they are inserted into the associated `aligned apertures 25 movable end plate holders 48 and 49 which form part of
14-14 and 16-16 in the end plates 1'2 and 13.
‘a mechanism, `designated generally by the numeral 51,
for holding and separating the plastic end plates 12 and
When all of the forty terminals 21-21, 22-22, 23--23,
13. The mechanism 51 for holding and separating the
24-24 and 26-26 are in the aligned apertures 14-'14
end plates may be similar to that disclosed in greater de~
and 16-1‘6 the end plates 12 and `13 are moved apart a
predetermined distance to locate the terminals fixedly 30 tail in Iapplication Serial No. 753,795 filed on August 7,
within the associated apertures 14-14 and 16-16 of the
1958 in the name of E. D. Hanson, now Patent 3,004,334.
The guide member 46 is mounted slidably vertically
end plates 12 and 13 to form the finished subassembly 11.
and is selectively indexable »for positioning the leading
Referring now to the combined FIGS. 1A and 1B, there
ends of the supply wires 17--17 to successive vertical
is shown a general assembly of an apparatus, designated
generally by the numeral 31, for performing the above 35 positions adjacent to each of the five horizontal rows of
apertures 14-14 and 16-16 in the plastic end plates
described steps of manufacturing the subassembly 11
12 and 13 by appropriate means, such as a multi-lobed
automatically. The apparatus 31 includes a plurality of
individual supply reels î27-27 from which indefinite
cam (not shown).
After a row of the wires 17-17 have been ffed through
lengths of eight supply wires 17-17 are fed intermittently.
The supply ywires 17-17 are fed around a pair of multiple 40 the corresponding apertures 14--14 and 16-16 in the
end plates 12 and 13 a desired predetermined distance
grooved sheaves 28-28 to change the direction of travel
the wires 17-,17 are severed at predetermined points by
of the wires 17-17 and direct them through pretwisting
the shearing mechanism 47 to form new leading ends
roll units, designated generally by the numerals 32--32,
horizontal straightening rolls, designated generally by the
numerals 33-33, and vertical straightening rolls, desig
nated generally by the numerals 34--34, by means of
an appropriate multiple wire hitch-feed mechanism, de
signated generally by the numeral 36.
As illustrated in FÍGS. 1A, 3 and 4, each of the twist
ing roll units 32 consists of a pair of spaced pairs of
grooved rolls 38-38. A groove 37 on each of the rolls
33-38 cooperates with the other roll 38 of the pair to
define a space 39 substantially equivalent to the cross
sectional dimensions of each of the wires 17-17. Each
of the wires 17-17 is placed in the first pair of the
on the supply wires ‘17-17.
45
The new leading ends on
the supply wires 17-17 are indexed vertically upwardly
a short distance to a position adjacent to another hori
zontal row of apertures 14-14 and 16-16 in the end
plates 12 and 13 by the indexing of the guide member
46 vertically.
Operation
Prior to commencing the operating cycle the operator
pulls the supply wires 17-17 from the supply reels 27,
places each wire 17 in a groove in one of the grooved
sheaves 28-28 and through the space 39 formed by
one of the first pair of twisting rolls 38-38, twists each
twisting rolls 38_38 in one orientation and in the other
of the wires 17--17 axially 180 degrees in the desired
cooperating pair of rolls 38-38 of the unit 32 in an
direction, and inserts each of the twisted Wires 17-17
orientation of 180 degrees in a clockwise or counterclock
into the space 39 between the appropriate second pair
wise direction as desired, to place a pretwist set in the
of rolls 38-38. Each of the wires 17-17 is then
wire 17 with the length of twist equivalent to approximate 60 passed through a set of the horizontal straightening rolls
ly twice the distance between the axis of rotation of the
33, through the cooperating set of vertical straightening
pairs of rolls 38-38.
The multiple wire hitch-feed mechanism 36 includes
rolls 34, through one of the converging tubes 43-43,
through the stationary clamping unit 41 of the feeding
two portions, a stationary clamping unit 41 and a movable
mechanism 36, through the movable clamping unit 42,
portion 42. The stationary portion 41 is designed to grip 65 through one of the telescoping guide tubes 44-44 and
the wires 17-17 and prevent movement thereof to the
into the guide member 46.
left as viewed in FIG. 1B, and to release the wires 17-17
At the beginning of the operating cycle in which a
and permit movement thereof in the opposite direction or
complete terminal strip subassembly 11 is formed, the
to the right as viewed in FIG. 1B. In this manner the
guide member 46 of the wire locating and shearing mecha
clamping unit 41 permits unidirectional movement of the 70 nism 47 is at a predetermined position wherein the lead
wires 17--17 along the longitudinal axes thereof. The
ing ends of the eight supply wires 17--17 are aligned
movable clamping unit 42 of the hitch-feed mechanism
precisely with corresponding apertures in the lowermost
36 is designed to grip the Iwires 17--17, extending there
horizontal row of apertures 14-14 and 16-16. At this
through in a generally parallel spaced relationship, when
time in the cycle the plastic end plates 12 and 13 are
held by the end plate holders 48 and 49 in close mating
it is moved in one direction, to the right as viewed in
3,045,712
5
6
relationship and so aligned that as the guide member
46 is indexed the leading ends of the wires will be aligned
with successive rows of apertures 14-14 and 16-‘16 in
the end plates 112 and 13.
The movable clamping unit 42 of the multiple wire
other with the apertures therein in aligned relationship to
facilitate longitudinal insertion of the group of noncircu
lar Wires into complementary 'apertures in the retaining
plates, feeding «a row of the supply Wires simultaneously
feeding mechanism 36, pulls the supply wires 17-17
from the reels 27-27 through the twisting rolls 32-32
and intermittently longitudinally through successive rows
of the apertures in the retaining plates to form successive
groups of wire terminals while simultaneously twisting `a
and straightening rolls 33--33 and 34-34 to give the
supply wires 17-17 predetermined alternate, axial pre
number of the wires of the group individually about the
longitudinal axes thereof in one direction and the other
twist sets and thereafter straightens them as the supply
wires 17-«17 are lfed longitudinally to supply substan
wires of the group individually in the opposite direction
and straightening the twisted wires while maintaining the
twist therein, indexing the ends of the row of supply
tially -straight wires having the proper axial pretwist set
prior to their insertion through the aligned apertures
Wires transversely of the axes of the supply wires between
successive feeding operations, guiding the noncircular sup
14--14 and 16-16 in the plate.
Normally when a member is twisted beyond its elastic 15 ply Wires having opposite-hand twists into successive rows
ofthe apertures in the retaining «plates all having the same
limit it will tend to return to a position representing ap
angular orientation While langularly orienting the ends of
proximately the amount by which it was twisted beyond
the twisted supply wires with the apertures of the end
its elastic limit. Accordingly, it should lbe noted that
plates, severing yall wires of the row of supply wires
the remaining twist in the supply wires 17-17 lbeing
simultaneously and rows successively to form successive
inserted into the end plates 12 and 13 is smaller in mag
rows of terminals in t-he retaining plates, successively
nitude than the twist that existed in those portions of the
feeding the retaining plates into positions to receive the
wires `17-17 when they were passing through the twist
ing roll units 32.
The movable clamping unit 42, of the feeding mecha
supply wires and removing the retaining plates -with the
terminals therein, moving the retaining plates along the
nism 36, which is the only means for moving the wires 25 longitudinal axes of the groups of terminals from close
proximity with each other to a predetermined spacing to
17-17 longitudinally through the apparatus, grips the
lock the plates and terminals together by resultant torques
wires 17-17 and advances the leading ends thereof
set up as a result of the twisting of the wires in opposite
simultaneously a predetermined distance into and through
directions to form a subassembly, and maintaining the
the apertures of the lowermost row of apertures 14-14
and 16--16 in the end plates 12 and 13. Immediately 30 terminals at predetermined longitudinal positions relative
to one 4another during the separation of the retaining
thereafter the eight supply wires 17-17 are severed by
plates.
the shearing mechanism 47 to -form the lowermost row
2. Apparatus for forming cage-like terminal strip sub
of terminals 21-21 in the apertures 14--14 and 16-16
assemblies including a «plurality of spaced, apertured, re
of the plastic end plates 12 and 13 and the create new
taining plates having wire terminals in the apertures there
leading ends on the supply wires 17--17.
of, which comprises means for supplying a group of
The guide member 46 is then .indexed upwardly so that
untwisted noncircular wires of indefinite lengths, means
the new leading ends of the supply wires 1'7-17 therein
for twisting a number of the wires of the group indi
are aligned with corresponding apertures 14-14 and
vidually about the longitudinal axes thereof in one direc
16-16 in the adjacent row of apertures in the plates
tion -and for twisting other wires of the group individually
12 and 13. The feed mechanism 36 is then operated to
advance the leading ends of the eight supply wires 17-17
a predetermined distance through the apertures 14-14
and 16-16 forming the second horizontal row of aper
tures in the end plates 12 and 13. The wires 17-17
inthe opposite direction, means for straightening the
twisted wires while maintaining the twist therein, means
for holding a plurality of apertured retaining plates in
close proximity to each other with the apertures thereof
are then severed to form the second row of eight termi 45 in aligned relationship with each other to yfacilitate longi
tudinal insertion of the group of pretwisted noncircula-r
nals 22~22 in the row of apertures adjacent to the lower
wires into complementary apertures in the retaining plates,
most row in the retaining plates 12 and 13. The feed
means for pulling the wires from the supplies thereof
ing, severing, and indexing operation continues in a man
through the twisting means and the straightening means
ner similar to that described above until all five of the
and for simultaneously feeding `a row of the supply wires
rows of apertures 14--14 and 16-16 have received pre
simultaneously and intermittently longitudinally through
determined lengths of the supply wires 17-«17 which are
successive rows of the apertures in the retaining plates to
out to the proper lengths to form the rows of terminals
form successive groups of wire terminals, wire-guiding
23-23, 24-24 and 26--26~ Thereafter the end plate
means having -a row of noncircular wire-guiding apertures
holding and separating mechanism 51 is operated to
therein and being mounted for indexing movement trans
separate the plastic end plates 12 and 13 a predetermined
versely of the axes of the supply wires, some of the non
distance.
circular wire-guiding ‘apertures in the row of apertures
As the plastic end plates 12 and 13 are moved apart
being oriented angularly with respect to others for guid
the resultant torque set up in the terminals 21-21,
ing the noncircular supply wires having opposite-hand
22-«22, 23--23, 24-24 and 26--26 :by virtue of the
alternate pretwist sets imparted to the supply wires 60 twists into successive rows of the apertures in the retaining
plates all having the same angular orientation and -f-or
17-17 by the twisting units 32-32 are locked firmly in
aligning and -angularly orienting the ends of the twisted
place in their associated apertures 14--14 and 16-1á
supply wires with the apertures of the end plates, means
to form a self-containing terminal strip subassembly 11.
for severing all wires of the row of supply wires simul
It is to -be understood that the above-described ar
rangements are simply illustrative of the principles of the 65 taneously and rows successively to form successive 'rows
of terminals in the retaining plates, means for successively
invention. Other arrangements may be devised ‘by those
feeding the retaining plates into the retaining plate holders
skilled in the art which embody the principles of the in
and for ejecting the retaining plates with the terminals
vention and fall within the spirit and scope thereof.
therein from the retaining-plate holders, means .for moving
What is claimed is:
l. The method of forming cage-like terminal strip 70 the retaining-plate 4holders containing the apertured re
taining plates along the longitudinal axes of the groups of
subassem-blies including a plurality of spaced, apertured,
terminals from a position wherein the retaining plates are
retaining plates having wire terminals in the apertures
held in close proximity with each other to a predeter
thereof, which comprises supplying =a group of untwisted
mined spacing to lock the plates and terminals together
noncircular wires of indeiinite lengths, holding a plurality
of apertured retaining plates in close proximity to each 75 by resultant torques set up lby the wires twisted in oppo
3,045,712
CI
7
O
site directions to form a finished cage-like terminal strip
subassembly, means for maintaining the terminals at pre
determined longitudinal positions relative to one 4another
References Cited in the tile of this patent
UNITED STATES PATENTS
during the separation of the retaining plates, and means
for operating the wire pulling and feeding means, wire
guiding means, the retaining-plate holders, the retaining
plate inserting and ejecting means, the Wire-severing means
and the retaining-plate moving means in timed relation
`ship with respect to each other `for automatically making
successive subassemblies.
10
1,394,796
1,753,793
2,033,632
2,711,818
2,771,663
2,800,705
2,885,651
Smith _______________ __ Oct. 25, 1921
Lang _______________ __ Apr. 8, 1930
Hawksley ___________ __ Mar. 10, 1936
Ruttkay ______________ __ June 28, 1955
Henry ______________ __ Nov. 27, 1956
Ingalls et al. _________ __ July 30, 1957
Moeller _____________ __ May 5, 1959
Документ
Категория
Без категории
Просмотров
0
Размер файла
712 Кб
Теги
1/--страниц
Пожаловаться на содержимое документа