Note: Descriptions are shown in the official language in which they were submitted.
33:~
The invention relates to a harness making apparatus.
Accor~incJ to the invQntion, harness making apparatus
comprises a wire holding head travexsable between first
and second wire term.inating stations to convey one end of
S each wire of a series o wires simultaneously from the
first station to the second station, means to terminate
the one end of each wire simultaneously at the second
station, means to feed a prede~ermined length of each wire
simultan~ously past or through the head when at ~le ~irst
station after termination at the second station and means
to sever and terminate the other end of each wire
simultaneously at the first station.
Exampl.es of the invention will now be described with
reexence to the accompanyiny drawi.ngs in which~
Fi~uxes la-c are diagrams showing the general mode
of operation o~ the apparatus;
Figure 2 is a cross-sectional view o a wixe holding
head at a fixst termlnating station in a first exampl.e of
apparatus;
Figure 3 is a cross-sectional view of the wire
holding head at a second terminating station of the ~irst
example of appaxatus;
Figu.re ~ i.s a side elevation of a second example of
harness making apparatus;
Figure 5 is an enlarged ~ragmentary view, partly in
s~ction of a connector holding jaw device of the harness
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maklng apparatlls of Figure 4;
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Figure 6 is a fragmentary section of part of the
apparatus of Figure ~, ~urther illustrating the connector
; holding device of Figure 5;
Figure 7 is a fragmentary view of part of Figure 6
showing a wire gripping finger in a gripping position;
Figure 8 is a transverse partly sectional view of
the harness making apparatus of Figure 4 illustrating means
for moving a lower connector holder;
Figure 9 is a fragmentary transverse section of the
harness making apparatus of Figure 4 illustrating wire hold- .
ing means at a first terminating station of the apparatus
and; : :
Figure 10 is a transverse view which, in conjunction
with Figure 6, illustrates operation of a severing ram of
the harness making apparatus of Figure ~.
As shown diagrammatically in Figure la, the apparatus
comprises a wire holding head 11 which is arranged to hold one
end of wires 10 extending from a wire supply 9 and first and
second operating stations 13 and 14 at which lower and upper
matable connectors 30, 33 and 18 and 19, respectively, are moun-
ted. The connectors are described in our Canadian Patent No.
1,068,363 which issued on December 18, 1979, movement together
of tho conncctors about wires suitably located between them
to mate the connectors, terminating the wires in terminals con-
ta:ined in the connectors.
Briefly stated, in operation of the apparatus the
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wire holding head 11 holding one end of wires 10 fed from
- the supply 9 traverses from the irst operating station 13
adjacent the supply to the second distal operating station
14 drawing the wi.res from the supply, terminates that end
of the wires in the connectors 18 and 19 at that station,
and returns to the first station 13 adjacent the supply for
a dwell p~riod in which measured lengths of wires are ed
by the supply through the head to extend in slac]c condition
between the stations and are then severed and terminated at
their other ends in connectors 33,30 at the first station~
This enables wire harnesses of greater length than the
separation of the first and second stations to he manu~actured.
The wire supply comprises a series of storage reels,
measured lengths of wires are drawn from the storage reels
and fed by a wire measuring and feed apparatus to the wire
holding head as described in our co ending patent
scriQ~ 30~ f;kdP~ 6~ ~97~,
application ~ b ~ e-~ . and to which reference
is hereby made. The wire feed apparatus comprises a
series o roller pairs, the rollers of each pair being
lndividually biased together to form a nip, adjacent rollers
being mounted for differential 51ip on a common driven
shat.
As shown in Figures 2 and 3, the wire holding head 11
is mounted ~or movement along a rail 12 extending between
~he operating stations 13 and 14 by a chain drive 8
indicated in dash-dot lines. The head 11 comprises
ront and rear blocks 16 and 17, respectively, havin~
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aligned wire-receiving bores 20. The wires are held in
the bores by releasable, pneumatically operated/ pistons
21 provided in the rear block. The front block 16 is
mounted on a piston and cylinder assembly 22 mounted for
reciprocal movement in the rear block and biased ko a
fo~7ard position by a spring 23, permitting lost motion
bl~
between the front and rear blocks. A wire severing ~
24 is mounted for vertical movement on a base part 25 of
the front block and biased ln an uppermost position by
springs 26 (only one shown).
Upper and lower connector holders 27, 28 and 34, 35,
respectively, are provided at the first and second stations.
The upper connector holders comprise verkical feed tubes
36,37 respectfully receiviny the upper connectors in a
sliding fit, and ~he tubes being mounted for lost motion on
rams 38,39. The rams are linked at their upper ends for
vertical reciprocating movement by cam means in cam heads
~1,42.
The lower connector holders 28,35 comprise,
respectivel~, carriage blocks 44,~5 mounted on dovetailed
slide blocks 46,47 for horizontal movement on rails ~8,49
on ~ixed base plates 90,91 to deliver individual connectors
30, 18 received in locating recesses 50,51 in the blocks
~ 5 in~o alig~ment with the upper connectors received in
the upper holders for ~ermination of the wires. Ball
catches 70,71 are provided on the holders to retain them
in alignment into the upper connectors. Connector
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8~3~
ejection mech~nisms comprise pawls 53,54 pivotally
: mounted on blocks 44,45 and having opexativc ends located
by ball catches 55,56 received ~n notches in curved
profiles of the pawls in engagement under a connector
Release of the pawls from the ball catches with ejection
o~ the connectors is effected by a bell-crank 58 (shown
in Figure 3 only) pivoted on bases 90,91 one arm of which
bell-crank can be brought into driving engagement with a
re~r end of the pawl after termination by operation of a
pneumatic piston and cylinder assembly 62 having a
piston rod 61 hooked around khe other arm 60 of the bell-
crank.
An extension 85 is provided on the block 35 at ~hesecond station to engage the wire holding head 120 to
arrest its forward ~ravel. Upper and lower wire holders
6~,65 respectively are provided at the first station 13.
The upper wire holder comprises a sleeve-form head
mounted by pins 67 and compression spring 68 for lost
motion on a ram linked for vertical reciprocating movement
to a cam mechanism in cam head 41.
The lower wixe holder 65 comprises a bar mounted
for vertical sliding movement in a slot in block 44.
qlhe bar is retained in a depressed position, when not
o~erative, agalnst the action of a biassing spring 7~, by
~5 ~le aatch 74 o~ a latch en~aging a re~ess 73 in the holder
G5. q'he latch is fixed by a pin 75 on a slider 76
mounted fQr sliding movemen~ on a plate 77 and biased to
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engage the recess 73 by a spriny 78. ~ hooked rear end
80 of the la~ch enga~es one end of a lever 81, pivotally
mounted on block 82 which is ~i~ed on base 9o, the other
end of which latch is located .in a hooked end 83 of a
S piston rod of piston and cylinder assembly 840
operation of the piston and cyllnder assembly
releases the latch to permit upward movement of the bar 65
so that channels formed on the end of the bar receive and
locate the individual wires.
Protective covers 86,87 are ~ixed on the base
plates 90,91 to protect the ejectlon mechanisms.
In op~ration of the apparatus, during movement of
the h~ad to the second distal station, with the lower
wir~ holder 65 depressed, the wires are held by the
pneumatic grip 21 and lost motion of the rear bloc]c 17
relative to the fo~ard block 16 of the head on abutment
with the stop 85 protrudes the leading ends of the wires
into alignment with respective contacts of the lower
connector 18. The ram 39 i9 then operated to ram the
upper connector 19 onto the lower connector lg terminating
the wlres.
The head then returns to the station 13 with the
grip 21 rel~ased to permit free movement of the wire3
within the bores. Wires are then fed ~hrough the head by
~5 the nip to the required len~ths and extend in slack
relation between the statlons.
The upper and lower wire holders 27,34 and 28,35,
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respectively, are then operated b~ the ram and piston and
cylinder assembl~ 84 ~o hold the wires between theml while
the severing ~ 24 is depressed by a ram 89 operated by
a cam mechanism in head 41 to sever the wires behind the
connector 30.
bl~de
The severing ~* 24 is then retracted by operation of
~iston and cylinder means 22 and the ram 38 operated to ram
an upper connector 33 onto the lower connector 30 to
terminate the wires as described above.
If necessary means may be provided to raise the
lower connectox to facilitate alignmen~ with the wires.
Subsequent to termination of both ends o~ the wires
the connectors may be ejected by operation of the ejection
mechanism and means (not shown) are provided to shift the
carriage blocks 44,45 horizon~ally along rails 48,49 to a
location remote from the rams prior to such ejection.
Loading of the lower connec~or6 may be accomplished
manually or by automatic means with the carriage blocks 4~,
~5 remote from the rams during which the pawls and lowex
wire holders 65 are depressed by the lower connectors and
held in the condition of Figures 2 and 3 b~ the ball catch
mechanisms 55,56 and the catch 74, respectively.
It should be noted that the lost motion during
inal forward movement of the head 11 at the distal
~5 ~tation prevents the severing ~ 24 entering the path o~
movement of the .tnsertion connector.
It wtll be understood that the pneumatic means may
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be replaced by sultable mechanical means and suitable
control devices may be provided automatically to control
the cycle of operations.
In the second example of appara~us accorc1ing to the
invention, as shown in Figure 1, and as more particul rly
seri~l~ hbr ~ 7/4
described in our copending patent application ~ t~e-~
~h~ to which reference is hexeby directed, the
~rire measuring and feed apparatus is generally similar to
that associated with the first example. The apparatus
comprises two first series of pulleys 103 and three second
series of pulleys 104, the individual pulleys of each
series being mounted for independent free rotation on a
common a~is and the first and second series being carxied
by blocks 105, 106 respectively, movable relatively apart
along vertical rods 107, 108 respectively, by drive means
aomprising a pneumatically operated piston and cylinder
assembly 109, to draw simultaneously predetermined lengths
of wires 10 from storage reels (not sho~n). The piston
and cylinder assembly 109 also effects movement o the
blocks 105, 106 together directly driving an output or
wire eed nip 112 through chain links 113/114 to eed the
lengths of wire simultaneous1y to a wire holding head 120.
Durin~ the wire eed a locking nip mechanism 110 is
operated to prevent any further wire being drawn from the
~5 skora~e reels. As mentioned in the above specification
the wlre feed nip comprises a series of roller pairs, the
,
rollers o each pair cooperating to grip respective ~rires
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between them. One series o~ adjac~nt rollers o the
roller paixs are'mounted for differential slip on a
common shaft driven by the chain links 113/114 and the
rollers of the-other series of xoller pairs are
individually biased b~ pneumatically operated piston and
cylinder devices towards their respective cooperating
rollers enfibliny wires of different di~neters to be
accor,lmodated by the nip.
As in the first example, (see particularly Figures 1
and 4), the wires are fed by the wire holding head 120 to
first and second terminating sta~ions 122 and 123,
respectively, ~7here they are termina ed between upper and
lower connectors 125 and 126. The ~irst and second stations
perform similar functions to those of the first example
and the ~irst station only is described in more detail
belo~, wire severing and wire engaging means being omitted
from the second sta~.ion.
More particularly, as shown in Figures 4, 5 and 6,
upper connectors 125 adhesively mounted on tape 129 are
~ed rom storage reels 130 into a vertical connector feed
chute 128 secured to a housing 131 at each terminating
station. The individual connectors 125 are removed from
the tape by leading the tape 129 out of the chu-te 128 in
reversely bent fasllion around an abutment 133 and then to a
scxap reel 134. ~ connector locating device or ja~ 132 is
mounted ~or horizontal sliding movement on the chute in
synchronism with a~connector feed device 141 described
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~ 36~31
below to ensure individual connectors are fed in correct
al.ignment with -the feed devices.
The connector locating device comprises a cross
member 138 carrying a series of parallel finyers 137, a
selected pair of the fingers 137 can be advanced to engage
opposite ends of a connector 125 thereby to locate
connectors of diferent size in correct alignment with
the feed device. Connector feed devices 141 having
connector holding jaws 143 are operably connected to
pis~on and cyl:Lnder devices 142 to fsed successive
individual connectors 125 from the bottom of the chute 128,
~ JI ~of~n~ctsr 9~i~?/e d~7
through an aperture 147 in an upper wire holder ~ at the
first station, Figure 6, into alig~nent ~ith an upper
insertion ram 15~. At each station, each connector
holding jaw 143 comprises a series of spaced parallel
fingers 144 adapted to engage behind the connector and
interd~gitate with perpendicular fingers ~, Fi~ure 6,
provided on the upper wire holder at the first station,
to define a connector guide surface engaging a side of the
connector during operation of the wire holder. Clc~mping
sprin.gs 1~6 are selectively located in slots in the jaws
to grip opposite ends of the connectox, aiding retention in
e jaws.
Wix~. termination steps are powered at first and
second stations by irst and second, triple step 149 and
doublo step ~not shown) piston and cyl..inder ass~mblies,
respectivel~.
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As shown in Figures 6 and 8, lower connector holders
150 for connectors 126 are slidably mounted in a carriage
151 at each terminating stat.ion. The connector holders
include a connector seat 155 movably located in the head
by a pin 156 received in slot 157. The carriage lSl is
pivotally mounted at 152 and connected to one end of an
arm 158, ~le other end of which carries a peg 159 engaged
in a cam slot 160 ~ormed in a plate 161 carried by an arm
162 mounted for verti~al movement on a rail 163 actuated
by the piston and cylinder assembly 1~9. Each carriage
151 is pivotally connected to an overcentre device
comprising a link 165 pivoted on one limb 166 of a bell
crank lever 167 mounted on the same pivotal axis as the
carriage 151, the other limb 168 being located in the path
lS of movement of a finger 169 carried by plate 161 and
vertically movable by the piston and cylinder assembly 149.
A second plate 170 is carried by arm 162 and is
formed with a cam slot 171 receiving cam follower peg 172
connected to one arm of lever 173 pivoted intermediate its
ands at 175 on a fixed ærame part 174. The othex arm 177
o the lever is pivotally connected to a slider 178
received in a channel 179 formed in the upper end of
insartion head ram 154. A guide plate 180 (Figure 6)
is mounted ~or lost motion on a ram 154 carrying the
insertion head. The guide plate is biased downwards
l~elativ~ to the ram 15~ by engagement with a pin 181
mounted against a compression spring 183 confined in a
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sleeve 182 carried by the ram 154.
A firs~ step of operation of ~he firs~ piston and
cylinder assembly 149 raises the c~n plate 161 to rock the
carriacJe 151 with the connector holder 150 into alignment
with the insertion ram 153 and rotate the bell-crank
anticlockwise. A second operation of the first piston and
cylinder assembly 149 causes the finger 169 to encJac~e the
limb 168 of the bell-crank 167 causing it to rotate clock~Jise
to raise the connector holder 150 with the link 165 in
overcentre condition. Movement of ~he caxriage is arxes~ed
by a huffer 183 comprising a piston 18~ mounted in a housing
188 fixed to frame 174 The piston has a slot 186 rQceiving
a pin 187 fixed in housin~ 188 and the piston is biased to
the right by compression spring 185. In Figure 8, the
lS piston is shown in retracted position for clarity. The
second step also raises cam plate 170 and cam slot 171 linked
to a lever arm 173 lowering the insertion head, thereby
forcing upper and lower connectors into engagement and
termlnating the wires thereinO
Do~nward, return movement of the plates 170,161
raises ~he insertion head and pivots the carriage in a
cloc]cwise direction to ~ngage an adjustable stop 189.
An ejector cam 190 is pivotally mounted on the carriacJe
and has an arm 191 tied ~o ~he frame 174 by a spring 192.
2S rrhe cam engages the pin 156 during ~he pivotal movement,
to drive ~he pin up~ards, as seen in Figure 8, ~o eject
~he conneator assembled to the wires.
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As shown in Figures 6 and 9, an upper wire holder
and connector guide 207 at the first station has a leading
wire engaging member 200 mounted for lost motion relative to
the connector guiding finger 145 on guide 207. The wire
engaging member 200 includes a generally U-shaped frame por-
tion with vertical arms 201 located against compression springs
208 in cavities in guide 207 and a cross piece 203 from which
dep~nd a series of wire engaging -fingers 202 linked for lost
motion against springs 204 a~ a leading end, and a series of
spaced connector guiding ribs 205 extending vertically away
from that end. The upper wire holder.and connector guide 207
includes a series of spaced vertical fingers 145 at a leading
end aligned with respective ribs 205 of the wire engaging
member 200 and which interdigitate with the fingers 144 on
the connector holding jaw during downward movement as men-
tioned above. The two members are assembled to ~rovide, be-
tween the vertical fingers 145 and ribs 205, a connector
admitting aperture which is closed during operation of the
holders as a result of the lost motion which brings the
Z0 fingers 145 and ribs 205 into contact to provide a.continuous
guide surface for one side of the upper connector during
downward terminating movement.
It should be noted that the other side of the
connector will engage the surface of guide 180 during down-
ward terminating movement. The connector is therefore
prccisely aligned between two opposed guide suraces during
the whole of the terminating movement ensuring accurate
.- 14 -
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31~ 51603~
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matin~ engagement of the respective contacts o~ the upper
and lower connectors.
The upper end of the ~x~ gui~e 207 is fonmed with a
channel receiving a slide 211 pivoted on an upper arm 212
of rocker 213 pivoted to the frame at 214. A tension
spring 216 connected between the arm 212 and the frame
biases the guide 207 in an upper position. ?
The lower wire holder or guide assembl~ comprises a
toothed plate 220 providing a wire locating comb mounted
for vertical sllding movement in a frame 221~ The plate
220 is provided with a ramp surface 222 engageable with a
complimentary ramp surface 223 on a horizontal arm 227.
The ramps have horizontal, engageable surfaces 224,225
respectively. Arm 227 is connected to a cam following
lS peg 221 engaged in a closed loop cam track 232 in plate
233 mounted for vertical movement on rail 163. The arm
is mounted in sleeve 230 for horizontal movement and one
end is pivotally connected at 228 to a lowe.r arm 229 of
rocker 213. The cam track 232 is pxofiled to provide
two stages of operation. A irst sta~e of travel o peg
231 withdraws the arm 227 to raise the toothed guide plate
through engage~nent o~ the ramps 222 and 223 and to lower
the upper guide 207 to txap the wixes between the teeth
of plate 220, and a second stage iowers the upper guide
207 further to cause lost motion between -~he wire engagi.ng
membex 200 and connector guiding .inger 145 to clamp the
wixes and to interdigitate the connector guidin~ fingers
.
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145 and 1~4~ No upward movement of the toothed plate
occurs during the second stage as hor.izontal support
surfaces 22~,225 of the ramps are in engasemen~.
As described in relation to the first example, ~he
wire holding head 120 (Figures 6 and 7) includes a fo~ard
part 241 having wixe receiving bores and slidably mounted
for lost motion by pin 243 against a spring (not shown) on
a rear part 242 provided with releasable wire gripping
means. The wire gripping means comprises a series of
fingers 244 pivotally mounted for rocking movement to
bring a lower profile 245 into engayement with the wixes
wedging the wires against friction plate 248. A spring
2~6 located at the rear of the head 2~2 engages one end o
each finger to bias it away from its associa-ted wire and a
spring loaded slidin~ catch 249 is releasable on depression
of the other end of the finger 244 against the bias of
spring 246 by a pin 251 carried by a severing ram mechanism
at the first station, to lock the finger 244, as seen in
Figure 7, in gripping engagement with the wire 10. The
sliding catch 249 can be withdrawn to release the finger
2~4 for xeturn of the head 120 by engagement with a inger
(not shown) carried by the connector eed rc~m at the second
station and which protrudes into the path of the wire
holdin~ head to engage the catch rear during a return stro~e
o the xam after connector ~eed. ~s w~th the irst
e~ample the wire holdin~ head i9 mounted ~or movement
along rails 252. Fo~rard movement is limited by
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engagement o~ thQ forward part 241 with an ahu~ment 260 at
the second station.
A severing head 253 is mounted on the leading end of
the forward part 241 and is depressable against a return
spring 255 to sever the wires by a severing r~n mechanism
at the first station, In this example, the severing rc~m
mechanism 261 (Figures 6 and 10) also depresses pins 251
caxried in slee~e 265 on block 264 into engagement with the
wire gripping fingers to grip the wires firmly ir~media~ely
priox to severing.
Stop means (Figure 10) are provided to s~op the wire
holding head in alignment with the severing ram 263 during
return travel o the wire holding head 120. The stop
means includes a slide bar 266 mounted for vertical
movement on a pivot plate 267 received in a recess 273 in
the bar 266 which can engage behind an abutment 269 on the
wire holding head ~Jhen the slide bar 266 is in depxessed
condition. A catch 270 is carried by a block 26~ of the
severing ram mechanism and is biased by spring 271 against
one end 272 o~ the pivot plate 267 such that downward
movement o~ the severing ram 263 effected by a piston and
cylinder assembly 262 depresses the catch 270 against the
spring 271 permitting it to r~de under the one end of the
plate 267 with release o~ the spring. Return movement o~
the ram 265 and block 264 ater wire severing causes the
catch 270 ~o lift the one end 272 of the pivot plate 267
thereb~ to raise the bar 266 and release the wixe holding
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head 120 permitt.ing further rear~ard moveJment of the wire
holding head 120.
The sequence of operations of the second example of
apparatus may be summarised as follows, commencing wlth
the wire holdiny head 12~ at the second station 123 with
the wires lO protruding ~rom the forward part 2~1 in
~lignment with the connector insertion head 153 as a
result o~ the lost motion and with the second connector
holding jaw 154 advanced aligning the upper connector
with the insertion head. A lower connector 126 is loaded
into the lower connector holder 150 (Figure ~0) and the
~,~
second piston and cylinder assembly operated to pivot the
/53
carriage 151 into aliynment with the insertio~ head
A second step of operation of the second piston and
cylinder assemhly efects raising of the connector holder
150 by the overcentre link 165 and lowering of the insertion
head to force the connectors togethe.r to terminate the
wires 10. The connector feed jaw at the second station is
~hen withdrawn to receive a further connector fxom the
chute 128 and during ~Jithdrawal movement the finger (not
shown) carried by the ja~r mechanism release~ the catch 249
of the wire holding fingers 244 to permit return of the
wire holding head 120 along the wires lO to the first
station 122 (Figure 6) where the head movement is arrested
by the stop 260.
A triple step double acting piston and cylinder
assembly 1~9 operates ~rire holding and termination at the
18
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36~93~L
first station. ~n a first step the lo~rer connector
carria~e 151 is roc]ced into alig~nen~ with the insertion
head as described above for the second station. The
lower toothed wire guide plate 220 (Figure 9) is raised by
the travel of the peg 231 in the cam track 232 ~rhlch also
lowers the upper wire guide fingers 202 into engagemen~
ith the guide plate ~20 to define wire guide apertures
through which the wires 10 can be fed by the ou~put nipL
After compleke wire ~eed through ~he wire holding
head 120, the second operational step causes further
depxession of the upper wire guide to take up the lost
motion with ~he cross piece to clamp the wires 10. Durin~
depression of the upper wire guide the vertical fingers 1~5
mesh with the horizon~al fingers 144 on the connector
lS holding jaw 143 and close the connector admitting aperture
147 to define with the cross piece 203 a continuous gu~de
path ~or the upper connector.
The piston and c~linder assembly 262 is then operated
to depress the severing ram 263 so that pins 251 lock the
wire gripping fin~ers 244 (Figure 7) on the wires 10 and
sevex the wires at a location immediately behind the
connec~ors and the wire holding means. Return of tha
severing ram 263 releases the wire holding head stop 266
and residual pressuxe in a piston and cylinder assembly
~S opera~ing head traverse, moves the head 120 rea~ardly a
small distance to provide clearance for the connector
,
insertion head travel.
~. 19
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A thlrd operational step of the first plston and
cylinder assembly 149 depresses the upper connector
insertion head 153 and raises the lower connector holder
- 150 through the overcentre mechanism, as described in
relation to the second station, ~o force the connectors
125,126 together about the ~ires 10.
The first and second piston and cylinder assemblies
are then operated to release the wire holders at the
first station and to effect return of the upper connector
insertion heads and re~urn pivotal movement of the
connector carriage 151 wi~h ejection of the connector as
described above.
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