Brother EF4, MA4 Service Manual
•
SERVICE
MANUAL
FOR
V SERIES
OVERLO
EF4-V41 •
EF4-V71 •
EF4-V72 • V82 • MA4
CK
SEWING
V51
V81
• MA4-
• MA4-
MACHINE
V61
V91
-V
92
(
PRODUCT
(
SPECIFICATION
SPECIFICATION
LIST
CONTENTS
CODE SETTING STANDARD ) · · · · · · · · · · · · · · · · · · · · · · · · · · ·
) · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 4
( MECHANICAL DESCRIPTIONS )
III Needle
1Z1
Under
00
Over
1!1
Double
liD
Knife
[§]
Presser
[1] Feed mechanism
[I]
Upper
00
.
Lubrication
bar
mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
looper
looper
mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
feed mechanism
mechanism
mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
chain
stitch
looper
foot
mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
.... ~ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
..............................
mechanism (V61, V91, V92)
...............................................................
· · · · · · · · ·
( DISASSEMBLY ) · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · ·
··
· · · · · · · ·
··
· · · · · · · · ·
~
..............................
...................................
··
· · · · · · · · · · · · · · · · · · · ·
··
· · · · · · · · · · ·
··
· · · · · · · · 30
III Covers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
IZ1
00
Presser
Knife
foot
mechanism
mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
...............................................................
..
. 18
16
16
17
19
21
25
30
31
1!1
Under
liD
Over
[§]
Double
[1]
Needle
[I]
Feed mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
II]
Upper
looper
looper
feed mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
mechanism
mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
chain
stitch
looper
bar
mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
.............................................................
mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
( ASSEMBLY ) · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · ·
III
Upper
IZ1
Feed mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
00
Needle
1!1
Under
[§] Over
00
[1]
[I]
feed
mechanism
bar
mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
looper
looper
Double
Knife
mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Presser
mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
chain stitch
foot
mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
...............................................................
looper
mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . .
..
. . . . . . . . . . . . . . . . . . . 54
33
41
41
SO
59
00
Covers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
61
( STANDARD
[I]
Adjusting
lZ1
Adjusting
rn1
Adjusting
1!1
Adjusting
[§]
Adjusting
[§]
Adjusting
11]
Adjusting
00
Adjusting
00
Adjusting
1m!
Adjusting
Ill]
Adjusting
H2l
Adjusting
111
Adjusting
Ml
Adjusting
1m
Adjusting
ADJUSTMENTS ) ·······
the
height
the
under
the
over
the
chain stitch looper, chain stitch needle guards
the
backward and
the
presser
the
height
the
height
the
positions
the
position
the
horizontal feeding
the
standard position
the
horizontal feed
the
standard
the
height
and location
looper,
looper
of
of
of
the
.............................................................
foot
............................................................
the
knife
the
feed
of
the
of
the
of
the
the
upper feed bar
movable needle guard, and needle guard
forward
dog
needle-thread take-up and
looper
timing
of
amount
vertical feeding
· · · · · · ·
of
the
needle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
movement
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
thread take-up
(position
the
horizontal feeding (level feed adjust arm) . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
··········································
of
of
..
..
.............................................
(F)
. . . . . . . . . . . . . .
(B)
and
(F)
. . . . . . . . . . . . . . . . . . . 66
the
chain stitch
the
.....................................
the
level feed eccentric wheel) . . . . . . . . 76
. . .
.. . ..
looper
needle thread
.. . ..
.. ..
..
.. .. . .. . ..
. . . . . . . . . . . . . . . .
guide . ..
..
. . . . . . 75
..
. . .
..
62
62
63
65
67
68
71
72
76
77
77
78
79
11§)
Adjusting
lll1
Adjusting
1m]
Adjusting
Iii
Adjusting
(
TROUBLESHOOTING
[1]
Needle
lZ1
Looper
rn1
Needle breakage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
1!1
Improper
1m
Improper
[§] Puckering
11]
Slippage
00
Double scooping (overlocking) . :
the
the
the
the
thread
thread
thread
chaining-off
...........................................................................
cloth
clearance between
vertical feed
differential
clearance
ratio
between
the
upper feed
amount
of
the
upper feed
........................................................
the
cloth plate and
dog
and
the
dog
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
the
needle plate . . . . . . . . . . . . . . . . . . . . 83
lower
feed
dog
. . . . . . . . . . . . . 80
) · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 84
breakage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
breakage
tension
.......................................................................
..............................................................
..............................................................
................................................................
......................................................
81
82
85
88
88
89
90
90
(
NEEDLE
(
MATERIALTHICKNESSANDSTITCHWIDTH
TIMINGGAUGETABLE
(
SIZE
AND
UPPER
)
LOOPER
) · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · ·
·································
) · · · · · · · ·
··
· · · · · · · · · · · · · · · · · · · ·
···························
···
91
· · · · 92
93
PRODUCT
SPECIFICATION
CODE SETTING STANDARD
Model
[Model]
EF4-V41
EF4-V51
MA4-V61
* Refer
[Stit
ch
plate
(Max. sewing speed
(Ultra
high
speed single needle
(Ultra
high
speed
(Ultra
high
to
SPECIFICATION
width]
Specification
Stitch
width
Device
MADE IN JAPAN
7500-8500
twin
speed safety stitch sewing machine)
LIST
spm)
over
lock sewing machine)
needle overlock sewing machine)
for
details.
[Specification]
~-0
[ill-
[E)
@]-[ill
2 ......
3
4
......
Model
[Model]
EF4-
.
Stitch wid
Stitch
.
Stitch
plate
(Max. sewing speed
V71
EF4-V72 (High speed single needle adjustable
th 2 mm
width 3 mm
width
4 mm
~~ii;;;i~iiiiiiiiiiiiil
MADE IN JAPAN
6000-6500
--
spm)
.......
5
6
7
.......
Specification
Stitch
Device
.
.
width
top
Stitch widt
width
Stitch
width
Stitch
and
bottom
h 5 mm
6 mm
7 mm
feed overlock sewing machine)
EF4-V81
MA4-V91 MA4-V92
[Sewing
2
type]
......
EF4-V82 (Hi
Back feed
.
Front feed
gh
speed
(High
type
type
twin
speed
needle adjustable
top
and
bottom
top
and
bottom
feed safety stitch sewing machine)
- 1-
feed ove rlock sewing machin
e)
[Device]
Device
Model
V41
.
V51
V61
V71
V72
V81
V91
V82 V92
Automatic
Automatic
Semi-auto backtack device
Vertical chain
Horizontal chain
tape
tape
cutter
cutter
feeder
cutter
Stitch number control
Suction pipe, tension release, stitch number control
Suction pipe, stitch number
Horizontal
Vertical
For single needle
For
twin
needle
Pneumatic rear suction
Pneumatic
Vacuum type rear suction
Vacuum
Chain cutter only, rear suction
Chain
Pneumatic
Vacuum type
Chain cutter only
type
cutter
front
front
only,
with
with
suction
suction
front
cont~ol
NP
tension release
NP
tension release
suction
ATC1
0 0 0 0 0
ATC3
0 0 0
ATCS
0 0 0
TFH
0 0 0 0 0 0
TFV
0 0 0 0 0 0
SBL1
SBL2
CV1
CV3
CV4
CV6
CV7
CV9
CH1
CH2
CH3
-
0
-
-
0 -
0 0 0 0 0 0
0 0 0
0
0
0
0 0 0
0 0 0 0 0 0
0 0 0
0 0 0 0 0 0
0 0 0 0 0 0
0 0 0 0 0 0
0 0
0
0 0
- - -
-
-
-
-
0
0
- -
-
-
-
0
0
-
-
0
-
Tape
cutter
Automatic presser
* The
blower
motor
foot I ifter
for
the
Pneumatic knee switch
Solenoid knee switch
Solenoid hand switch
Pneumatic
chain cutter vacuum type
is
optional.
TC1
0 0 0 0
TC3
0
TCS
0 0
PL
1
0 0
0
0
0 0 0 0 0
0 0 0 0
0 0 0 0
-2-
[Stitch type]
Stitch
formation
One needle
Serging Plain stitching Blind-hemming Mock-safety
Stitch
Two needles
with
formation
with
(503)
two
threads One needle
(514)
four
threads Two needles
Safety stitching Safety stitching
with
with
(504)
three threads
One
needle
(515)
four threads Two needles
with
with
(505)
three threads Two needles
(516)
five threads
with
four threads
(512)
-3-
c
SPECIFICATION
A:
Sewing sleeves on
E:
Blind-hemming
LIST )
B:
Forming sleeves
F:
Serging
F
c
0
C:
Joining body parts
G:
Sewing frills on
0:
Joining
inner
leg
H: Joining shoulder
Subclass
01-3
-4
-5
-6
02-5
-6
-7
03-3
-4
-5
~
Stitch
type
needle=
a
(504)
a
(504)
8
(505)
Ultra
[]
~
No.
of
No.
of
Needle
hread5
1
3
1
3
1
3
high
speed
4;,
~.<
*
Stitch
width
~auge
mm)
(®)
3
4
-
5
6
5
6
-
7
3
4
-
5
single·needle
EF4-V41
==
:t
00
--
Max. Differential Height
stitch
length
(~)
0.9-3.8
0.6-2.6
0.9-3.8
ratio
0.7-2
1-3
0.7-2
presser feed dog
foot
(mm)
5
6
5
overlock
lr
~
of
Pitch
of
(mm)
1.6
2.5
1.6
[Main)
m
I
Dlfferen
Ia
I)
Type
of
feed
dog
H
Ill
n
Ill
n
II
sewing
+
Needle size
0007
#11
#14
#9
machine
l)j
Max.
Looper Usage (Material)
(spm)
8500
8000
8500
path
s
H
(-6)
H
s
s=
S:
Standard specification
H: High
lift
specification
m
Thin and medium
thick materials
A, B,C, D
Bulky knits
A,B,C
Blind-hemming
E
Attachment
-
(With
angle
knife)
Blindhemming
ruler
04-3
-4
-5
~3)
(Using spreader)
05-4
-5
~3)
(Using spreader)
NOTE:
The
rotating
1 2
1
2
speed has been set according
3
0.9
·3.8
4
-
5
4
-
5
0.7-2
1.4·5.9
0.7-1.3
to
Brother's standard sewing specification.
5 1.6
5 1.6
-4-
m
II
'
k
#9
#14
8500
8500
Blind-hemming
s
Serging
s
Blindhemming
E
F
ruler
Serging ruler
H
-~
F
r
t-C
c
Subclass
06--4
-5
07-2
-3
<,
Stitch type
ij
No.
of
t~eedle!
1
~
(504)
1
~
(504)
F
l]
lf
No.
of
Needle Stitch Max.
hreads
~auge
mm)
3
-
3
-
G
~
width
stitch
length
(®)
(~~)
4
1.4-5.9
5
2
0.9-3.8
3
==
00
Differential
ratio presser
0.7-1.3
0.7-2
r
0 F
~
--
~eight
of
Pitch
feedd99
foot
(mm)
5 1.6
5 1.6
ir
~
(mm)
of
[Main)
~
I
Differen1
ial)
Type
of
feed dog
p
k
~
I
+
Neediesize
DCx27
#14
#11
E
~
Max. Looper
path
s=
(spm)
8500
8500 s
s
m
Usage
(Material)
Serging
Serging ruler
F
Curlin~
(lower
curing)
-
Attachment
-
08-5
~
09-5
~
10-4
-5
~
-6
11-5
~·
-6
-7
12-3
~·
-4
-5
17-3
~·
-4
-5
(504)
(504)
(504)
(504)
(504)
(504)
1 3
1 3
1 3
1
1
1
Ruffling
s
A,G
Ruffling (with piping)
s
A,G
Taping
with
medium thick
s
H
s
materials
Taping
bulky knits
Backtacking
thin
and medium
thick materials
A,B,C,D
Soft chaining
thick
and
thick materials
thin and
H
with
H
medium
with
with
Ruffling
attachment
Parts
of
ruffling
attachment
Tape guide
Tape guide
(with angle
knife)
Backtacking
parts
-
0.8-3.2
5
-
0.8-2.8
5
1.6
[
#11
7500
m
0.8-3.2
5
-
0.8-2.8
5 1.6
[
#11
7500
m
4
0.9-3.8
5
-
6
5
3
-
3
-
0.6-2.6
6
7
3
0.9
4
5
·3.8
0.7-2
1-3
0.7-2
5 1.6
6 2.5
5 1.6
n
#11
~
H
#14
Ill
n
#11
8500
(-6)
8000 H
8500
D
3
3
-
0.9-3.8
4
5
0.7-2
5 1.6
n
#11
~
8500 s
-5-
G
F
<:,
Subclass
Stitch
22-4
-5
··,
-6
-~
.
--...
-7
23-4
-5
-6
a.
-7
(Mock-safety)
24-5
-6
•'
,·,"'-
-7
Ultra high speed
[]
~
type
No.
of
No.
hreads
reedle
4
2
:
{514)
2
4 2.2
(5
4)
,
~
(514)
4
2
'ff
of
Needle Stitch
~auge
mm)
2.2
3 6
~
~<
Max. Differential
width
stitch ratio
length
(®)
(~)
4
5
0.9·3.8
6
7
4
5
0.9
·3.8
6
7
5
0.9·3.8
7
twin
needle overlock sewing machine
EF4-V51
(Main}
==
00
~
--
!Height
presser
foot
(mm}
lr
!:::!::!:::!::>
Pitch
of
feedd~
(mm)
0
+
e
of
Oifferen
Needle size
Ia
I]
DCx27
of
Type
feed dog (spm)
H
0.7-2
5.5
1.6
#11
I
H
0.7-2
0.7-2
5.5
5.5
1.6
1.6
#11 7000 H
lit
n
#11
Ill
eD)
Max. Looper
path
sewlnJ'
spee
8000
8000
H:
High
E:
lift
Extra high
m
Usage
(Material)
Medium thick and
heavy materials
H
A,B,C,D
Medium thick and
heavy materials
A,B,C
Thin and medium
thick materials
H
A,B,C
specification
lift
specification
Attachment
-
-
-
25-5
-6
~
-7
(Mock-safety)
27-5
-6
-~
·:·--..
-7
28-5
-6
~
-7
31-6
-7
32-6
-7
{512)
(Mock-safety)
-~
{514)
~2)
(Mock-safety)
{512)
(514)
2
4
3
4
2
2
2
2
2.2
4
2.2
4
3
4
3
5
0.9·3.8
6
7
5
0.6·2.6
6
7
5
0.6·2.6
6
7
6
1.2·
7
5.0
0.7-2
1-3
1-3
0.7-1.4
1.6
5.5
2.5
5.5
5.5 2.5
6 2.5
n
#11 7000 H
Ill
n
#14
lh
H
#14
•
H
#18
7500 H
7000 H
6500
Thin and medium
thick materials
A,B,C
Bulky knits
A,B,C
Bulky knits
A,B,C
Extra heavy materials
E
A,B,C,D
(With
knife)
(With
knife)
(With
knife)
-
angle
angle
angle
•
6
1.2.
5.0
7
0.7-1.4
6
2.5
H
lh
#18
6500 E
-6-
Subclass
33-5
<f;,
Stitch
width
('(&')
5
~<
[]
(514)
j
No.
of
No.
of
hreads
t~eedle!
2 4 2.2
~
Needle
~auge
mm)
~
Stitch type
.·~
·
.........
==
00
MalC.
Differential Height
stitch ratio presser
length
(~)
0.8-3.2
0.8-2.8
~
--
foot
(mm)
5.5 1.6
of
Pitch
feed
lr
~
(mm)
(Main)
of
Differen1
dog ial)
Type
feed dog
I
m
~
I
of
+
Needle size
DClC27
#11
f)j
MalC.
Looper
sew~
spe
(spm)
7500 H
path
m
Usage
(Material) Attachment
Ruffling
Ruffling
A,G
attachment
34-5
2 4
2.2
~2)
(Mock-safety)
37-5
--~
·:·-.....
-6
38-5
~
41-5
.,~
-6
42-5
-6
~2)
(Mock-safety)
45-5
-6
,·,
-~
._
........
-7
(514)
(512)
(514)
(514)
2 4
2 4
2
2 4
2
2.2 5
2.2
4 2.2
2.2
4
2.2 6
0.8-3.2
5
0.8-2.8
5.5 1.6
[
#11
7500 H
m
0.8-3.2
0.8-2.8
5
1.6
[
#11
7500 H
m
5
0.8-3.2
0.9-3.8
0.8-2.8
0.7-2
6
5
6
5 1.6
5.5
1.6
[
#11
m
n
#11 8000 H
7500 H
Ill
5
0.9·3.8
6
5
0.6-2.6
7
0.7-2
1-3
5.5
5.5 1.6
1.6
H
Ill
H
HI
#11 7500
#14
8000
Ruffling
A,G
Ruffling
(with
A,G
Ruffling (with piping)
A,G
Taping
with
medium thick
materials
Taping
with
medium thick
H
H
materials
Taping
bulky knits
H
H
H
piping)
thin
thin
with
and
and
Ruffling
attachment
Ruffling
attachment,
piping parts
Ruffling
attachment,
piping parts
Tape guide
Tape guide
Tape guide
(with
angle
knife)
46-5
-6
-7
~2)
(Mock-safety)
49-5
~~~~.
-6
~
57-6
.~
-7
2 4
2 4
(514)
2 4
(514)
2.2
2.2
2.5
5
0.6-2.6
6
7
5
0.9-3.8
6
1-3
0.7-2
5.5 1.6
5.5 1.6
H
Ill
H
Ill
6
0.6-2.6
7
1-3
7
n
2.5
Ill
-7-
#14
#11
#14
7500 H
8000 H
6500 E
Taping
with
bulky knits
H
Backtacking
thin and medium
thick materials
Bulky knits
with
A,B,C,D
A,B,C
Tape guide
(with
angle
knife)
Backtacklng
parts
(With angle
knife)
c
F
G
Subclass
61-2
-3
-4
-5
62-2
-3
-4
-5
63-3
-4
-5
-6
-7
64-3
-4
-5
-6
-7
65-4
-5
-6
-7
66-4
-5
-6
-7
67-4
-5
68-4
-5
Ultra
<,
Stitch
type
~.
<'~
(516)
~
{515)
(Using spreader)
*r""··
·~·
-~
{516)
~~
(515)
(Using spreader)
·'-.·
..
>~
{516)
~~)
(Using spreader)
[l\
~
No.
of
No.
of
hread
~eedle!
2 5 2
2 4 2
2
5
2 4
2
5 5
2 4
2
5
Needle
<~6)
(Using spreader)
<~,6)
(Using spreader)
2 4 2
high
~
~
Stitch Max. Differential
width
(®)
2
3
4
5
2
3
4
5
3
4
5
6
7
3
4
5
6
7
4
5
6
7
4
5
6
7
4
5
4
5
stitch ratio
length
<mr>
0.9·3.8
0.9·3.8
0.9-3.8
0.9-3.8
0.9
0.9-3.8
0.8-3.2
0.8-3.2
lauge
mm)
3
3
5
2
speed
==
00
0.7-2
0.7-2
0.7-2
0.7-2
·3.8
0.7-2
0.7-2
0.8-2.8
0.8-2.8
safety
MA4-V61
~
--
[Height
of
presser
foot
(mm)
5
5
5 1.6
5
5 1.6
5 1.6
5 1.6
5 1.6
stitch
lr
~
Pitch
of
feedd!>Q
(mm)
1.6
1.6
1.6
sewing
[Main]
~
I
Differen
ial]
Type
feed dog (spm)
machine
+
Needle size Max.
DCx27
of
f)j
sew~
spe
~
#11 7500
~
IY
#11
7500 s
~
~
#14
7500
hi
~
#14
7500
ld
~
#16
7500
ld
~
#16
7500
ld
t
m
t
m
#14
#14
7000
7000
S:
Standard specification
H: High
E·
lift
Extra high
m
Looper
Usage
path
s
s
H(-6)
{-7)
s
H{-6)
{-7)
s
H{-7)
(-6)
s
H(-7)
(-6)
s
s
(Material)
Thin materials
A,B,C
materials
Thin
A,B,C
Thin and medium
thick materials
A,B,C,D
Thin and medium
thick materials
A,B,C,D
Medium thick and
heavy materials
A,B,C,D
Medium thick and
heavy materials
A,B,C,D
Ruffling
with
and medium thick
materials
A,G
Ruffling
with
and medium thick
materials
A,G
specification
lift
specification
Attachment
thin
Ruffling
attachment
thin
Ruffling
attachment
-
-
-
-
-
-
-8-
A
F
c
[Main)
Subclass
69-4
-5
70-4
-5
71-5
-6
72-5
-6
75-5
76-5
77-5
-6
78-5
-6
<::,
Stitch
type
<.
....
.
~
(516)
[]
ij
No.
of
No.
~eedle!
hreads
2
5
2
4
of
~5)
(Using spreader)
(516)
2
2 4
5 5
t..,.,.
/~
~5)
(Using spreader)
(516)
2 5
2
4
"-·
...
-~
~
~
Stitch
Needle
width
lauge
mm)
('®)
4
3
5
4
3
5
5
6
5
5
6
3
5
3
5
Max.
stitch
length
(~)
0.8-3.2
0.8-3.2
0.8-3.2
0.8-3.2
0.8-3.2
0.8-3.2
~5)
(Using spreader)
5
2
5
<~
(516)
2 4
5
5
~5)
(Using spreader)
0.9-3.8
6
5
0.8-3.2
6
=..,..
00
Differential Height
0.8-2.8
0.8-2.8
0.8-2.8
0.8-2.8
0.8-2.8
0.8-2.8
0.8-2.8
0.8-2.8
~
--
ratio presser
foot
(mm)
5 1.6
5 1.6
5
5
5 1.6
5
5
5 1.6
db
of
Pitch
of
feed dog ial)
(mm)
1.6
1.6
1.6
1.6
0
a
l)j
+
Differen1
Needle size Max.
DCx27
#14
#14
#14
#14
#14
#14
#14
#14
5~~~
7000
7000
7000
7000
7000
7000
7000
7000
Type
of
feed dog (spm)
t
m
t
m
t
m
t
m
t
m
t
m
t
m
t
m
Looper
Usage
path
Ruffling
and medium thick
s
Ruffling
and medium thick
s
medium thick and
s
H
(-6)
medium thick and
s
H
(-6)
Ruffling (and piping)
s
Ruffling (and piping)
s
Ruffling (and piping)
with
s
and heavy materials
H(-6)
Ruffling (and piping)
with
s
and heavy materials
H(-6)
m
(Material)
with
materials
A,G
with
materials
A,G
Ruffling
heavy materials
A,G
Ruffling
heavy materials
A,G
with
thin
medium thick
materials
A,G
with
thin and
medium thick
materiaio;.
A,G
medium thick
A,G
medium thick
A,G
with
with
and
thin
thin
Attachment
Ruffling
attachment
Ruffling
attachment
Ruffling
attachment
Ruffling
attachment
Ruffling
attachment,
piping parts
Ruffling
attachment,
piping parts
Ruffling
attachment,
piping parts
Ruffling
attachment.
piping parts
-9-
<::.,
Subcla$$
Stitch
type
81-4
<~
-5 5
82-4
-5
83-4
-5
-6
84-4
-5
-6 (515)
{516)
~
{515)
(Using spreader)
/~
t.._ • .,.._"·
{516)
~
(Using spreader)
ij
No.
of
reedles
2
2
2 5
2
l]
No.
of
hreads
5 3
4
4
lf
Needle
~auge
mm)
3
5
5
~
@..;
Max.
Stitch
stitch
width
length
('&)
~~
4
0.9-3.8
4
0.9-3.8
5
4
0.9-3.8
5
6
4
0.9-3.8
5
6
==
00
Differential
ratio
0.7-2
0.7-2
0.7-2
0.7-2
~
--
Pitch
of
Height
feed dog
presser
foot
(mm)
5
5
5
5
[Main)
lr
~
Differen
of
(mm) Type
ial)
feed dog
-~
1.6
hi
1.6
1.6
1.6
~
II
+
Needle size Max.
0Cx27
of
#14
~
#14
hi
~
#16
ld
ICB
#16
~
l)j
sewincr
spee
(spm)
7500 s
7500 s
7500
7500
.
Looper
path
H(-6)
H(-6)
m
Usage
(Material)
Taping
with
thin
with
with
with
H
thin
H
medium
H
medium
H
and
and
medium thick
materials
Taping
medium thick
materials
Taping
thick and heavy
materials
Taping
thick and heavy
materials
Attachment
Tape guide
Tape guide
Tape guide
Tape guide
85-3
l~,._
•
.,..
/~
-5
86-5
(516)
2
5 3
4
2
3
~5)
(Using spreader)
89-4
{~
....
<~
-5
90-4
-5
~5)
(Using spreader)
92-5
-6
<~
-7
93-5
-6
~
-7
(Using spreader)
(516)
{516)
{515)
2 5
2 4
2
2
3
3
5
5
4
5
3
1.2-5
5
0.7-1.4
3.5
2.5
~
#18
6500
~
1.2-5
5
0.7-1.4
3.5 2.5
~
#18
6500
~
4
0.9-3.8
5
0.7-2
5
1.6
lw
#14
6500
~
4
0.9-3.8
5
0.7-2
5 1.6
~
#14
6500
~
5
1.2-5
1.2-5
0.7-1.4
0.7-1.4
3.5
3.5 2.5
6
7
5
6
7
2.5
~
#18
~
~
#18
6500 E
6500 E
~
Extra heavy materials
E
A,B,C
Extra heavy materials
E
A,B,C,D
Binding
and medium thick
s
s
materials
C,H,J
Binding
and medium thick
materials
C,H,J
Extra heavy materials
A,B,C,D
Extra heavy materials
A,B,C,D
with
with
thin
thin
Tractor
foot
(with
angle
knife)
Tractor
foot
(with
angle
knife)
Binding
parts. tape
guide
Binding
parts. tape
guide
Tractor
foot
(with
angle
knife)
Tractor
foot
(with
angle
knife)
-10-
High
speed
adjustable
top
and
bottom
EF4-V71·V81, MA4-V91
feed
Overlock
sewing
machine
(Back
E:
Extra high
type)
lift
specification
<:::,
Subclass
71..01-3
81·22-4 4
91-63·3
91-65·3
Stitch
type
-4
~
·5
-6
·5
-6
-7
-4
·5
·6 6
-7
-4
-5
-6
-7
(504)
-~
:-
........
~.
(514)
1\.•q.
-~
{516)
r.
.•.
/~
{516)
l]
~
No.
of
No. of
hreads
~eedles
1
3
2
4 2.2
2
5
2
5
Stitch Stitch
Needle
*
width
~auge
mm)
-
3 5
5
~
length
('&)
(®)
3
4
0.9-3.8
5
6
5
0.9-3.8
6
7
3
4
0.9-3.8
7
3
4
0.9-3.8
5
6
7
t==
00
Lower feed
differential
ratio
0.7-2
0.7-2
0.7-2
0.7-2
~
~
~
--
Height
He~~ht
ofupJ:r
presser
eed
(mm)
(~~\
5.5
5 6
5.5
5
5 5
5 5
og
a
c;;;:v
Max.
uffe:I
amount
6
6
6
1§1 1§1
i i
Shape
[and
pitch
of
lower
feed dog
H
Ill
{1.6)
H
~
(1.6)
p
hi
(1.6)
p
hi
(1.6)
+
Needle
size
(0Cx27)
#11
#11
#14
#16
l)j
Max.
s;=
(spm)
6500
6500
6500
6500
Looper
path
H
H
H
H
m
Usage
(Material)
Thin and medium
thick materials
Thin and medium
thick materials
Thin and medium
thick materials
Medium thick and
heavy materials
Attachment
-
-
-
-
91-92-5
·6
t ...
/~
-7
2
(516)
5
0.9-3.8
5
6
5
7
0.7-2
3.5 6
6
p
#18
ld
{1.0)
5500 E
Extra heavy
materials
Tractor
(with
knife)
foot
angle
-11-
Subclass
72.01·3
-4
·5
·6
High
speed
.::::,
Stitch
type
a
(504)
~
No.
needles hreads
1
adjustable
(l\
of
No.
of
3
top
and
bottom
EF4-V72•V82,
<£;,
®.;
==
00
lf
Needle Stitch Stitch Lower feed
width
~auge
mm)
-
length differential
(roo')
(~)
3
4
0.9-3.8
5
6
ratio presser eed og
0.7-2
feed
overlock
MA4-V92
~
~
==:!:
Height Max.
He~~ht
of
ur3cer
(mm)
(~~\
5.5 4.6
sewing
8
!NV
ureper
eed
amount
machine
~~
iii
Shape
and pitch size
of
lower
feed dog
H
6 #11
~
(1.25)
(Front
em
+
Needle Max.
sew~
(DCx27)
spe
(spm)
6000
feed
H:
High
E:
Extra high
Looper
path
H
type)
lift
specification
lift
specification
m
Usage
(Material) Attachment
Thin and medium
thick materials
-
72.01-4
~4)
·5
(Using small·
%:)presser
72.02·5
·6
a
·1 7
72.08·5
a
{504)
72-09·5
~
82·22-4
·~
1~
'"'-~.
·6
·7
(504)
{504)
(514}
1
1
1 3
1
2
3
-
3
-
-
3
-
4 2.2
4
0.9·3.8
0.6·2.6
0.7-2
1-3
5
5
6
5.5
6.5
4.6
6.2
6 #11
~
(1.25)
n
8
#14
6000
5000 E Bulky knits
Thin and medium
H
thick materials
-
(With angle
knife)
lh
(1.25}
H
0.9·3.8
n
0.9-3.8
0.9-3.8
0.7-2
0.7-2
0.7-2
5.5 3.5
5.5 4.7
5.5 4.6
8
8
6
~
{1.25)
n
~
(1.25)
n ·5
I
(1.25)
#11 5000 E
#11 5000 E
#11
6000
H
Shirring
Shirring
with
piping
Thin and medium
thick materials
-
-
-
5
5
4
5
6
7
82-22·5
.•
~)
·6
(Using small·
%:resser
82·23-4
·5
·6
~
·7
(Mock-safety)
82·31·6
a
·7
(Using small·
%:\presser
{512}
{504)
2 4
2 4
2
5
2.2
2.2
4
3
0.9·3.8
0.9·3.8
0.9
·3.8
0.7-2
0.7-2
0.7-2
6
4
5
6
7
6 n
7
5.5 4.6
5.5 4.6
6.5
6.2
-12-
u-
6
I
(1.25)
n
6
~
{1.25)
6
lh
{2.5)
#11
#11
#18
6000 H
6000
5500 E
Thin and medium
thick materials
Thin and medium
H
thick materials
Extra heavy
materials
-
-
-
Subclass
High
speed
<:.,
Stitch
type
needles
adjustable
[]
~
No.
of
No.
of
hreads
top
and
~
~
Needle Stitch Stitch
width
('00')
length
(aD)
1auge
mm)
bottom
EF4-V72•V82,
Lower feed
~Jfferential
c=:.=
00
ratio
feed
overlock
MA4·V92
~
~
~
Height
He~~ht
presser
~~~
(mm)
~~~\
sewing
8
c:;;v
Max.
'feper
eecl
amount
§I §I
B
~
Shape
and pitch
of
lower
feed
dog
machine
I))
+
Needle
size
sew~
(0Cx27)
spe
(Front
Max.
(spm)
feed
type)
rn
Usage (Material)
ooper
path
Attachment
82·32·6
·1
~
(512)
(Mock-safety)
82·33·5
.~
·6
(514)
82·34·5
~
-6
82-37·5
·6
82·38·5
-6
(512)
(Mock-safety)
:~
(514)
~
(512)
2
2 4
2
2
2
4
3
2.2
4 2.2
4 2.2
4
2.2
6
0.9-3.8
7
5
0.9-3.8
6
5
0.9
6
5
0.9·3.8
6
5
0.9-3.8
6
·3.8
0.7-2
0.7-2
0.7-2
0.7-2
0.7-2
6.5
6.2
5.5 3.5
5.5 3.5
5.5 4.7
4.7
5.5
n
6
#18
5500 E
Extra heavy
materials
-
lh
(With
(2.5)
angle
knife)
H
8
#11
5000 E Shirring
-
I
(1.25)
9
8
#11
5000
E
Shirring
-
I
(1.25)
n
8
Ill
(1.6)
#11
5000 E Shirring
with
piping
-
n
8
#11
5000 E Shirring
with
piping
IIi
(1.6)
-
82-41-5
-6
-~
·:...-.,.
·1
82-42·5
·6
~
-7
82·51·5
·6
':·"'--.
~
·1
82·57·5
-6
·:~
·1
(514)
(512)
(514)
(514)
2
2
2
2
4
4 2.2
4
4
2.2
2.5 6
2.5 6
5
0.9
·3.8
6
7
5
6
7
5
7
5
7
0.9·3.8
0.7-3.2
0.7
·3.2
0.7-2
0.7-2
0.8-2.8
0.8-2.8
5.5 4.6
5.5 6
6.5 6.2
6.5 6.2
-13-
6
I
(1.6)
6 #11
I
(1.6)
m
8
1111
(1.25)
w
8
uu
(1.25)
#11
6000 H
6000 H
#14
5000 E Bulky knits
#14
5000 E Bulky knits
Taping
with
and medium
materials
Taping
with
and medium
materials
thin
thick
thin
thick
Tape
guide
Tape
guide
(Wlthangle
knife)
(With
angle
knife)
High
<,
speed
adjustable
[]
~
top
~
~
and
bottom
EF4-V72·V82, MA4-V92
==
00
feed
j:
overlock
~
__j_
8
[;WI
sewing
I§
ti
machine
~
i
+
(Front
()j
feed
type)
m
Subclass Stitch
92·63·3
-4
·5
·6
·7
92-63-4
·5
92·64·3
-4
·5
·6
·7 (Using spreader)
92-65·3
-4
·5
·6
·1
92-66-3
-4
·5
-6
-7
type
<.~
(516)
.-~
··~'<..
(516)
(Using small-
I
~~~~\presser
~
(515)
l,
...
,
-~
(516)
~
(515)
(Using spreader)
No.
of
No.
of
hreads
~eedle!
2
5 3
2
5 3
2
4 3
2
5
2
5 5
Needle Stitch Stitch Lower feed
~auge
mm)
5
length
width
(COO')
3
4
5
6
7 (1.25)
4
5
3
4
5
6
7
3
4
5
6
7
3
4
5
6
7
~ifferential
·3.8
·3.8
ratio
0.7-2
0.7-2
0.7-2
0.7-2
0.7-2
(®)
0.9-3.8
0.9
0.9
0.9·3.8
0.9-3.8
Height Max. Shape Needle Max.
Height
of
ofu'fo:
eeclog
presser
(mm)
c~\
4.6
5.5
4.6
5.5
4.6
5.5
4.6
5.5
4.6
5.5
and pitch size
uf:Jr
amount
6
of
lower
feed dog
f
(DCx27)
#14
Ill
6
#14
h~
(1.25)
6
#14
flu
(1.25)
6
f
(1.25)
6
#16
Ill
#16
fld
(1.25)
Usage (Material)
Looper
path
s;~
(spm)
6000 H Plain stitching
6000 E Plain stitching
6000 H Plain stitching
6000 H
6000
Plain stitching
H
Plain stitching
Attachment
-
-
-
-
-
92-69-4
·5
·6
92-70-4
·5
·6
92-71-5
·6
92-72-5
·6
2
2 4
2
2
5
5
4
·\·
....
-~
(516)
:}J
(515)
(Using spreader)
..........
--~
(516)
~
(515)
(Using spreader)
4
0.9.
3
5
3.8
0.7-2
5.5 3.5
8
f~u
6
4
3
5
5
0.9·3.8
5
6
5
0.9.
6
5
0.9-3.8
6
3.8
0.7-2
0.7-2
0.7-2
3.5
5.5
5.5 3.5
5.5 3.5
-14-
(1.25)
8
f~u
(1.25)
8
fid
(1.25)
8
fld
(1.25}
#14
#14
#14
#14
5000 E
5000 E
5000
5000
Shirring
Shirring
E
Shirring
E Shirring
-
-
-
-
Subclass
High
<,
Stitch
type
speed
adjustable
[}1
~
No.
of
No.
hreads
reedles
:rr
of
Needle
lauge
mm)
top
and
1f?
Stitch
Stitch
width
length
(®)
(®)
bottom
EF4-V72·V82, MA4·V92
Lower feed
~ifferential
~=
00
ratio
feed
overlock
~
~
===:!:
--
Height
Height
of
ofu':cer
presser
~eed
foot
(mm)
Cmml
og
8
wv
Max.
u~r
amount
sewing
(§
~
~I
Shape
and pitch
of
lower
feed dog
machine
()j
+
Needle
size
(DCx27)
s:=
(Front
Max.
(spm)
feed
Looper
path
type)
m
Usage
(Material)
Attachment
92-75-4
-5
'\·
...
-~
-6
92-76-4
-5
•~...
.....
-~
·6
(Using spreader)
92·77·5
''··~
-~
·6
92-78·5
~
-6
(Using spreader)
92-92-5
(:
·6
..
·~~
·1
..
~
{516)
(516)
(516)
(515)
(516)
2
2 4
2
2 4
2
5 3
3
5 5
5
5 5 6
4
E
E
E -
E
Shirring
(with piping)
Shirring
(with
piping)
Shirring
(with
piping)
Shirring
(with
piping)
Extra heavy
materials
-
-
-
-
Tractor
(with
knife)
foot
angle
0.9-3.8
·3.8
0.9
·3.8
0.9·3.8
0.9
·3.8
0.7-2
0.7-2
0.7-2
0.7-2
0.7-2
5.5
5.5
5.5
5.5
3.5
4.7
4.7
4.7
4.7
5.7
8
#14
5000 E
P~u
(1.25)
8
P~~
(1.25)
8
pld
(1.25)
8
pld
(1.25}
6
~~.~
(2.5)
#14
#14
#14
#21
5000
5000
5000
5500
5
6
4
0.9
5
6
5
6
5
6
5
7
92-93·5
-6
~
·1
(Using spreader)
2 4
(515)
5 6
5
0.9·3.8
0.7-2
7
3.5
-15-
5.7
6
~~
(2.5)
#21
5500 E
Extra heavy
materials
Tractor
(with
knife)
foot
angle
c MECHANICAL
[!]
Needle bar
mechanism
DESCRIPTIONS
)
(1) When
moves up and
(2)
The needle
the
needle shaft@).
(3)
The needle bar
and (D)
the
crank shaft 0 rotates
down
on
6,
driving
and
crank rod assembly @ moves
@)
attached
is
moved
the
eccentric
up
to
and
Eccentric
in
the
direction
part
of
the
needle bar clamp assembly e
down.
of
the
crank shaft.
the
the
arrow,
needle bar clamp assembly e up and
part
the
needle driving crank rod assembly @
is
guided by needle bar bushes (U)
down
via
<9
-16-
[2]
Under looper
mechanism
Eccentric
part
(1)
When
(2)
(3)
the
crank shaft 0 rotates in
mounted on
The
under looper shaft
The
motion
shaft e.
the
is
eccentric part
arm@)
transmitted
the
direction
of
the
crank shaft
oscillates.
to
the under looper holder 0 and
moves
-17-
of
the arrow, the under looper connecting rod @
up and down.
the
under looper
@}
via the under looper
~
Over looper mechanism
(
Eccentric
~
part
(1)
When the crank shaft 0 rotates in the direction
@ moves up and down on
(2)
The
over looper connecting rod assembly @ oscillates the over looper arm 0 via the shaft arm
the
over looper shaft
(3)
The motion
over looper@) follows
is
transmitted
0.
the
the
eccentric part
to
the over looper holder 6 via
ideal track.
of
of
the arrow, the over looper connecting rod assembly
the
crank shaft.
the
over looper guide holder
-18-
@,
@)
then
and
the
[!]
Double
[Longitudinal feed mechanism]
[Oscillating mechanism]
chain
stitch
looper
mechanism
(V61,
V91,
V92)
[Double chain stitch looper longitudinal feed mechanism]
{1)
When
longitudinal feed
{2)
The motion
longitudinal feed shaft@).
[Double chain stitch looper oscillating mechanism]
(1)
When the crank shaft 0 rotates in the direction
{2)
The
(3)
The chain stitch looper lever 0 moves the chain stitch looper holder @)and the chain stitch looper &
via
the
crank shaft 0 rotates in
arm@), and the slide block clamp 0
is
transmitted
motion
the
is
transmitted
longitudinal feed shaft@).
the
direction
to
the chain stitch looper holder
to
the chain stitch looper lever 0 via the chain stitch looper link@).
of
the arrow, the longitudinal feed rod @ moves the
is
moved up and down.
@)
of
the arrow, the under looper shaft arm@ oscillates.
-19-
and
the chain stitch looper & via
the
[51
Knife
mechanism
[Upper knife mechanism]
(1)
When
the
crank shaft 0 rotates in
moves up and
(2)
The upper knife differential
(3)
The upper knife differential arm
down
on
the
eccentric part
arm@)
the
direction
connected
@)
oscillates
of
the
of
the arrow,
crank shaft
to
the
upper knife driving rod assembly 8 oscillates.
the
attached upper knife holder 9 and
the
0.
@).
[Lower knife mechanism]
(4)
The
lower
knife
(9
is
the
The
spring
lower
attached
@).
knife holder guide@) positions
to
the
lower
the
knife holder
lower
knife
-20-
6,
and
is
<a,
and guides the lower knife holder
upper knife driving rod assembly @
the
upper knife
engaged
with
the
upper knife 0 via
6.
[§]
Presser
foot
mechanism (1) (V41, V51, V61)
(1) When
(2) The presser bar
(3) When
the
presser
@}is moved
moves
caught by
pressure
the
the
of
foot
downward
lifter
presser arm
presser bar
the
end
of
the
presser spring
lifter
via
the
arm
0,
fi
up
lifter
the
presser bar
lever 0
presser bar
attached
via
the
@)
is
lowered in
en>.
is
lowered
to
presser arm shaft e and
lifter
in
lifter
link@.
the
presser bar
the
@),
and
-21-
the
direction
lifter
direction
is
raised. The presser arm
of
the
the
of
lever
pin(!).
the
arrow,
@)
arrow,
the
presser bar
and
the
presser arm shaft
the
presser bar assembly
fi
is
released
lifter
from
lever
9,
@)
is
the
[I) Presser
foot
mechanism (2) (V71, 72, 81, 82, 91, 92)
Adjustable
(1)
(2)
top
When
the
feed bar
When
the
presser arm & starts
and
bottom
presser
lifter
upper feed dog
foot
m moves
to
feed overlock sewing machine
lifter
lever 0
the
upper feed support bar
@attached
rise.
is
lowered, the presser bar
4)
to
the
tip
of
lifter
lever
@)
rotates, and
up and down.
the upper feed support bar @
Smm
the
is
raised 5 mm,
upper
the
-22-
111
Feed
[Differential feed mechanism]
mechanism
(1)
Slide
block
* The
(1) The
(2)
differential
shaft
0.
differential
differential
The
differential
@),
and
ratio
To acquire a bigger
feed lever
link
lever e and
feed
the
differential
* For gathering feeding,
For stretched feeding,
is
adjusted by changing
differential
@)
moves
the
differential
amount
the
the
is
transmitted
feed dog
differential
differential
@)
operates.
feed lever@)
feed lever
JGathering
the
height
ratio, change
the
slide block on
feed adjust
to
the
@)
feeding
of
the
slide block against
the
height
the
link@.
differential feed bar
is
set
to
is
set
to
of
the
differential feed arm @ vertically via
lower
position.
upper position.
that
main feed shaft
fi
via
the
differential feed
of
0.
the
main feed
the
link
-23-
111
Feed
mechanism
(2)
[Stitch length changing mechanism]
(1) When
with
a finger and
0 enters
(2)
The stitch length
part®
It
is
convenient
*
After
changing
the
feed adjust shaft 0
the
pulley @
part®
of
the
of
the
can
eccentric
to
align
the
stitch length,
be adjusted by turning
is
pressed
is
turned in
eccentric cam.
cam
with
the
the
graduations on
it
can
Reference
around the eccentric
the
direction
the
pulley
feed adjust shaft 0
the
pulley@
be fixed using
the
mark
cam
of
the eccentric wheel assembly
of
the
arrow,
while
the
pressed.
with
the reference mark on the
screw.
tip
of
the
the
tip
of
the
feed adjust shaft
feed adjust shaft 0 enters
belt
cover@).
-24-
1!1
Upper feed
[Horizontal feed mechanism]
mechanism
(1)
(1)
When
the
crank shaft 0 rotates in
the
eccentric wheel
(2)
The
motion
feed shaft
and
the
(3)
The level feed crank shaft
is
moved horizontally.
is
0.
feed
transmitted
arm@
@.
to
The horizontal feed
oscillates.
@)
the
direction
the
level feed adjust arm block assembly
amount
transmits
the
of
the
is
transmitted
motion
to
-25-
arrow, the feed rod
to
the upper feed bar
the
@)
moves back and
(9
via the feed arm e and
feed arm @ via
G!>,
and
the
feed rock I
the
upper feed bar
forth
ink
on
the
fj,
G!>
[I]
Upper feed mechanism (2)
[Horizontal feed adjusting mechanism]
the
When
plate
0 and
feed rock
position
link@.
of
the
slide block 0
the
level feed adjust lever shaft
Then,
the
horizontal feed amount
is
changed using
@,the
-26-
the
level feed adjust lever
rocking amount
of
the
upper feed dog
of
the
feed arm 6
is
changed.
@)
via
is
the
feed adjust
changed via
the
00
Upper feed mechanism {3)
[Vertical feed mechanism]
(1)
When
and down.
(2)
The
differential
<9
(3)
The
feed
the
crank shaft 0 rotates in
motion
osci
vertical feed crank shaft G transmits the motion
bar@)
II
ates.
is
transmitted
arm@) I
is
the
moved up and down.
to
vertical feed amount
the
direction
the vertical feed adjust arm block assembly 0 via the upper knife
of
is
transmitted
Eccentric
the arrow, the upper knife driving rod @ moves up
to
the feed
to
the upper feed bar assembly @),and
part
lifting
link@) I and
the
the
feed arm
upper
-27-
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