Global WF 9995-AE Parts list manual

WF 9995-AE
SINGLE NEEDLE,
TOP
AND BOTTOM FEED
LOCKSTITCH
SEWING MACHINE SPECIALLY
DESIGNED
FOR
TRIMMING
AND
BINDING,
WITH
ALTERNATING OUTSIDE PRESSERFOOT.
AND EDGE
CUTTER
INSTRUCTION / OPERATING MANUAL
PARTS MANUAL

CONTENTS
Instruction Manual
1.
.
MAIN
SPECIFICATIONS
...........
-i
.......
........
..........
.
......................
.
.....
..
....
.
...
......
l
2.
INSTALL
THE
MOTOR...
..........
..
............
..
...
......
......
....................
...
............
.....1
3.
CONNECT
THE
CLUTCH LEVER
WITH
THE
PEDAL... ;
......................
.........
.. .. ......l
;
4.
PREPARATIOJi
AND LUBRICATION.... ............
............
....
.......
...
.....
...
............
....l
5.
REPLACE NEEDLES...
......................
..
...............
... ... .. ........
...........
......
..
...
........2
6.
RUN-IN
OPERATION
...................................
.... ..
.....
.
.........................
...........
....2
7.
SET
STITCH LENGTH
AND
REVERSE FEEDING ....
...........
.....
....
..........
..........
.3
8. THREADING
......................................
.'
........
.
.........
..
.
.....
...
-
...................
.....
...3
9.
WINDING
ADJUSTMENT
...........................................................
·
.............
....
.....3
10.
POSITION PRESSER BAR
..
.
.......
,.
........:
...........
,
... ....,
.
..
....... ..... ..
.....
.... ...
............
.4
11.
ADJUST
THE
PRESSURE
OF
PRESSER FOOT
....
....
................
...
..................
:
........
4
12.
ADJUST THREAD TENSION
.....
.-
....
.
...................................
.
...............
.
...............
4
13.
ADJUST THREAD
TAKE
-
UP
SPRING
......
....,
......................................................
5
14.
ADJUST THREAD GUIDE
AND
THREAD TENSION
...................
..
...........................
6
15.
TIME
NEEDLE
TO
ROTAING
HOOK
.................................................................
6
16. REPLACE
ROTATING
HOOK
...........................................................................
7
17.
ADJUST
THE
HEIGHT
OF
FEED
DOG
.................
..
...........................
...... .
.............
7
18.
ADJUST
THE
POSITION
OF
FEED
DOG
............................................................
8
19.
TIME
FEED MOTION
TO
NEEDLE MOTION
......................................................
8
20.
ADJUST OPENING TIME
OF
THE TENSION DISCS
.............................................
9
21.
LUBRICATION ADJUSTMENT
....................
.....
:
..............................................
9
22.
INSTALLING
OF
THE NEDDLE
PLATE
..........
:
.................................................
JO
23.
CLOTH
CUTTING KNIFE
...............................................................................
10
24.
REGULAR CLEANING.
..
...
............
......
.....
.............
..
....................................
..
11
Parts Catalog
A.
ARM
BED
AND
ITS
ACCESSORIES
.........................
~
..........................................
12
H.
SEWING
MECHANISM..·
.....
......·-
·····················
...................
.
:
..............................
15
C.
STITCH
REGULATOR
MECHANISM.. .
................
..
............................
:
.......
.......
.....
18
D.
FEEDING
AND
FEED LIFTING MECHANISM
...................................
..
...................
20
E.
PRESSER FOOT
MECI-IANISM
.......
............
..
..
....................................................
22
F.
TOP
FEED
MECHANISM
..................................................................................
24
G.
KN!
FE
MECHANISM .. .
............................
..
.....
.
..........................................
....
27
H.
OIL
LUBRICATION
MECHANISM
..............
.......:
.........................................
1
........
29
I.
OIL
RESERVOIR
AND
OTHER ACCESSORIES
......................................................
31
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1.
MAIN SPECIFICATIONS
I) Sewing material: Light-Medium material
2) Max. sewing speed: 2000 spm.
3) Stitch length: 0-8mm.
4)
Needle bar stroke: 35mm.
5)
Presser fool lift: 6mm (by hand) 13mm (by knee ).
6) Needle:
DPX
17
No.18-No.22
7) Lubrication: Automatic
8) Width to be cut: Standard8.0mm. Special6,10,12mm
9) Reverse feeding mechanism: Have
2.INSTALL
THE
MOTOR ( Fig.1 )
Align
Motor
Pulley Groove ( B ) and Balance Wheel Groove ( A ) by
moving
the
motor
leftward or
rightward.
X
~---
--
·--------
Fig. 1 Fig. 2
3.
CONNECT
THE
CLUTCH LEVER WITH THE
PEDAL
( Fig.2 )
1)
The optimum tilt angle
of
pedal
(A)
is approximately
15
deg.
2) Adjust Clutch
Cover
(
D)
so that Clutch-Lever ( C ) and Draw Bar ( B ) run in line.
3) The balance wheel should rotate counter-clockwise when viewed from the outside
of
Balance Wheel ( G ).
The direction
of
the
motor pulley rotation can be reversed by reversing ( turning
over
180
deg.)
the
power
plug
of
the motor.
4) Adjust the tension
of
V-belt (
F)
by
turning Motor Vertical Position Screw ( E ).
The
proper tension
of
the
V-belt
is
a slack
of
10-20mm when the belt is depressed at the center
of
the belt by finger.
4. PREPARATIONAND LUBRICATION (
Fig.3)
l)
Cleaning the machine
Before
leaving the factory, the machine parts are coated with rust-preventive grease, which may be
hardened and contaminated
by
dust during storage and shipment. This grease must be removed with gasoline.
2)
Examination
Though every machine
is
confirmed
by
strict inspection and test before leaving the factory, the machine
parts may be loose
or
deformed after long distance transportation with
jo
l
t.
A thorough examination must be
performed after cleaning the machine. Turn the balance wheel to see
if
there
is
running obstruction, parts
collision, uneven resistance or abnormal noise.
If
these exist, adjustment must be made accordingly before
·-
·-
1 --·
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run-in operation.
3) Oiling
(1) Required amount
of
oil.
Line ( A ) on the oil reservoir: Max. oil level. Line (
8 )
on the oil reservoir: Min. oil level.
If
oil level
goes down under line ( B ), oil cannot be distributed to each part
of
the machine, thus causing the parts a
seizure.
(2) Replenishing
Always use only No.18 special machine oil for high speed sewing. Be sure to replenish oil to Line ( A )
before sta1iing operation.
(3) Replacing oil
To
replace oil,
remove
Screw ( C ) to drain oil. After completely draining
off
oil, clean the oil reservoir
and securely tighten Screw ( C ), then
fill
the reservoir with fresh oil.
~
--
-
---
--
- -
----
~
X
)(
I
A B
C
/'
a b
C
Long
groove
Fig.3
Fig.4
5.
REPLACE NEEDLES ( Fig.4)
Turn the balance wheel to lift needle bar to the upper end
of
its
stroke. Loosen Needle Clamp Screw A.
While keeping the long groove
of
the needle leftward fully insert the needle shank up to
the
bottom
of
the
needle socket. Then tighten Needle Clamp Screw A.
Note: Fig. (b): insufficient insertion.
Fig. (c): wrong direction
of
long groove.
6.
RUN-IN OPERATION ( Fig.
5)
Run-in operation
is
required for a new sewing machine, or a sewing machine left
out
operation for a
considerable length
ohime.
1)
Remove Rubber Plugs ( A ) on the top
of
the arm and replenish sufficient amount
of
oil.
2) Lift Presser
Foot
( B ).
3) Run the machine at a low speed ( 1000-lS00spm ) to check oil distributing condition through Oil
Check Window ( C
).
4) Perform run-in operation at 1000-l SO0spm for 30minutes. After a lapse
of
one month
of
service during
which the working speed
is
increased gradually and the machine runs sufficiently well, the high speed
2000spm can be adopted according to the nature
of
the work.
-·2
--
-
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Fig.5 Fig.6
7. SET STITCH LENGTH AND REVERSE FEEDING (
Fig.6)
I) Stitch length can be set
by
turning Dial
(A).
2) The figures on Face ( B )
of
dial show stitch length
in
mm.
3) Reverse feeding starts when Reverse Feed Lever ( C )
is
depressed, and the machine will feed forward
again ifReverse Feed lever (
C)
is
released.
8.
THREADING (
Fig.7)
To
thread the needle thread, raise needle bar to the upper end
of
its stroke, lead the thread from spool and
perform threading
as
shown
in
Fig.7 .
To
draw the bobbin thread, hold the end
of
the needle thread and turn
the
balance wheel to lower the needle bar and then to lift it to its highest position. Pull the needle thread and the
bobbin thread
is
drawn up. Put the ends
of
needle thread and bobbin thread frontward under presser foot.
a
b
Fig. 7
9.
WINDINGADJUSTMENT ( Fig.8 )
- 3 -
A----~
8
---~
m
C
d
Fig.8
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1)
The wound bobbin thread should be neat and tight,
if
not, adjust the winding tension by turning
Tension Stt!d Nut
(A)
of
bobbin winder tension bracket.
Note: nylon
or
polyester thread should
be
wound with little tension, otherwise, Bobbin ( D ) might.break
or deform.
2) When the wound thread layer does not present a cylindrical shape
as
shown in Fig.8 (
a)
, loosen Set
Screw ( B )
of
bobbin winder tension bracket and slide Bracket ( C ) leftward or rightward.
If
thread
is
wound
as
shown
in
Fig.8 ( b ), move the bracket rightward, but
if
thread
is
wound as shown in Fig.8 ( c ), move the
bracket leftward.
After adequately positioning the bracket, tighten Set Screw ( B
).
3) Do not overfill the bobbin.
The
optimum length
of
thread will fill about 80%
of
bobbin capacity. This can be
adjusted by Adjusting Screw (
E)
of
bobbin winder stop latch.
10.POSITION PRESSER BAR (
Fig.9)
1)
Loosen lock
Nut
(
E)
and Pressure Regulating Thumb Screw
(A).
2) Remove rubber plug from Face Plate ( B
).
3) Loosen Screw (
C)
and adjust the position
of
Presser
Bar
(
D)
till the presser foot
is
6 mm above the
throat plate will the presser foot lifted to its highest.
4) Tighten Screw (
C)
and put
in
the rubber plug.
5) Tighten pressure Regulating Thumb Screw
(A)
and Lock Nut ( E
).
a b
Fig.9 Fig.
10
11.
ADJUST THE PRESSURE OF PRESSER FOOT (
Fig.10)
Pressure
of
presser foot is to be adjust
in
accordance with thickness
of
materials to be sewn.
First loosen Lock Nut ( A
).
For heavy materials, turn the pressure regulating thumb screw as shown
in
Fig.
IO
( a ) to increase the pressure, while for light materials, turn the pressure regulating thumb screw as
shown in Fig.
IO
(
b)
to decrease the pressure. Then tighten Lock Nut
(A).
The pressure
of
presser foot is recommended to be less
as
long as normal feeding
is
ensured.
12. ADJUST THREAD TENSION ( Fig.11,12 )
In
principle, thread tension
is
to be adjusted
in
accordance with materials, thread and other factors.
In
practice, thread tension is adjusted according to the stitches obtained. The needle thread tension should
-4
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be adjusted with reference to the bobbin thread tension. Turn Tension Spring Regulating Screw (
A)
of
bobbin
case clockwise for more tension, or turn the screw counter-clockV{ise for less tension.
It
is common practice to test the bobbin test the bobbin thread tension as shown
in
Fig.12 . Hold the end
of
the thread from delivery eye.
If
the bobbin case is falling slowly, the proper tension
is
obtained. The needle
thread tension can be adjusted by setting ( 1 ) the take-up spring tension. ( 2 ) the thread take-up spring stroke
and ( 3 ) tension spring. All these adjustments will be described
in
the following.
Fig.
11
Fig.
12
13.
ADJUST THREAD TAKE-UP SPRING ( Fig.13,14)
Fig.
13
Fig.
14
l)
Adjusting the thread take-up spring tension
Loosen Set Screw
(A),
turn Tension Stud (
B)
clockwise to increase the spring tension,
or
turn the stud
counter-clockwise to decrease the spring tension. After the adjustment,
be
sure to tighten Set Screw
(A)
. The
thread take-up spring tension should be about 30g. To Attain this. First loosen Set Screw ( A ), turn Tension
Stud ( B ) counter-clockwise to decrease the tension
of
Thread Take-
up
Spring ( C ) to zero, then turn Tension
Stud (
8)
clockwise until Spring (
C)
comes to the notch
of
thread tension regulating bushing, and again turn
Tension Stud ( B ) halfway back ( counterclockwise ) After the adjustment. Tighten Set Screw
(A).
2) Adjusting the thread take-up spring stroke
Loosen Set Screw ( B ), turn Stud ( C ) clockwise to increase the .stroke
or
turn Stud ( C )
counter-clockwise to decrease the stroke.After the adjustment, tighten Set Screw ( B
).
Before leaving the factory, the thread take-up spring has properly been adjusted. Readjustment
is
needed only
in
the case
of
special material or special thread.
-5-
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14. ADJUST THREAD GUIDE AND THREAD TENSION (
Fig.15,16)
The position
of
the thread guide affects stitch tightness and therefore must be adjusted according to
sewing materials and sewing conditions.
FiglS shows different stitch forms. Normal stitch form should
be
as
shown
in
Fig.
IS
(
a).
When abnormal stitches cause puckering
and thread break-age, the tension
of
needle thread and bobbin
thread must
be
adjusted accordingly.
I
2
3
Thread guide position Leftward Center Rightward
Material weight Heavy Medium Light
Fig.
15
a
b
C
d
e
I)
In
case needle thread tension
is
too strong or bobbin thread tension
is
too weak, as shown in Fig.lS ( b ),
turn the thumb nut counterclockwise to decrease the needle thread tension, or tighten the tension spring
regulating screw
of
bobbin case to increase the bobbin thread tension ( See Fig.16 )
Fig.
16
Fig.
17
2) In case needle thread tension
is
too weak
or
bobbin thread tension
is
too strong, as shown in Fig.
15
( c
),
turn the thumb nut clockwise to increase the needle thread tension, or loosen the tension spring regulating
screw
of
bobbin case to decrease the bobbin thread tension.
3)
In
case
of
the stitch forms as shown
in
Fig.1 S ( d ) and ( e ), adjustments can be made with reference to the
above means.
15. TIME NEEDLE TO ROTATING HOOK ( Fig.17,18,19,20 )
A. Adjusting the needle position ( See Fig.17 )
1)
Turn balance wheel by hand to bringNeedle Bar (
C)
to the lowest position
of
its stroke.
2) Remove rubber plug from Face Plate
(A)
.
3) Loosen Set Screw ( B )
of
needle bar adaptor.
4) Move Needle Bar (
C)
vertically to adjust needle timing.
5) After the adjustment, tighten Set Screw ( 8 ) and put
in
the rubber plug. The standard needle timing ( See
Fig.18 )
is
to align Timing Mark ( B ) on the needle bar and the bottom
of
Needle Bar Bushing ( A ) and
- 6
·-
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meanwhile align the Inner Surface (
E)
of
the hook and the center
of
Needle Eye ( D ) when the needle bar
gets down to its lowest position.
Fig.
18
B.
Adjusting the hook point timing
0.
05mm
Fig.
19
Timing
of
needle motion to rotating
hook
motion has a great effect on sewing performance. The standard
hook point timing ( See Fig.20 )
is
to align Hook Point ( D ) and Needle Centerline ( C ) when Needle
Bar
(
B)
is
lifted by 2.2mm from the lower end
of
its stroke. Besides, Hook Point (
D)
should be 1.0-1 .Smm above
the upper end
of
needle eye ( E
).
When adjusting the hook point timing, also notice that the clearance between the bottom
of
needle notch
and Hook Point (
C)
should be approx. 0.05mm ( See Fig.19 )
Fig.20 Fig.21
16.
REPLACE ROTATING
HOOK
( Fig.21 )
1)
Lift needle bar to the highest position
of
its stroke.
2)
Remove throat plate, take down needle and bobbin case.
3)
Loosen Screw (
C)
of
hook positioner and take down Hook Positioner
(A).
4)
Loosen two Screws (
D)
of
rotating hook.
5)
Turn balance wheel to raise feed bar to its highest position, then take down the rotating hook
by
turning
it
away from feed bar.
6)
Installing the hook can be done in reverse sequence. Note that Needle ( B ) and the convex surface
of
Hook Positioner
(A)
should align with a clearance
of
0.5-0.7mm between them.
17.
ADJUST THE HEIGHT
OF
FEED DOG ( Fig.22,23 )
I)
Turn balance wheel until feed dog is lifted to its highest position from throat plate surface.
2)
Loosen Screw
(A)
of
feed lifting rock shaft crank right ( See
Fig.22,b)
-7-
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3) Move Feed Bar ( B ) in the direction shown by the arrow in Fig22 ( a ) to adjust the he
ight
of
the feed
dog. The standard height
of
feed ,dog
is
that the top
of
feed dog
is
1mm
above
Throat
Plate S,urface
( B ).
4) After the adjustment, be sure to tighten Screw
(A)
.
a
b
Fig.
22
Fig.
23
18.
ADJUST THE POSITION OF FEED DOG ( Fig.24,25)
The standard position
of
feed dog
is
that the clearance between the front end
of
the
throat
plate slot and
the first tooth
of
the fully advanced feed dog
is
Imm,
as
shown in Fig.24.
1)
Fully advance the feed
dog
toward the front end
of
the throat plate slot.
2) Loosen Feed Rock Shaft
Crank
Screw
(A).
See Fig.25 ( b ).
3)
Move
Feed Bar ( B ) in the direction shown by the arrow in Fig. 25
(a)
to adjust the feed
dog
position.
4) After the adjustment, be sure to tighten Screw
(A)
.
.--
-
-----{A
a
b
Fig.24 Fig.25
19. TIME FEED MOTION TO NEEDLE MOTION ( Fig.26,27,28)
The standard timing
of
feed motion to needle
motion
is
that the top
of
feed
Dog
( C )
is
flush with
Throat Plate Surface ( B )
when
the point
of
Needle
(A)
reaches Throat Plate Surface ( B ). See Fig.26 .
Fig.26
If
feed motion•
is
not timed to needle motion, adjust as follows ( See Figs.27 and 28
).
I)
Remove
Ann
Side
Cover
.
2) Loosen Set Screws
(A)
and (
D)
of
feed and feed lifting eccentric.
3) Hold Feed and Feed Lifting Eccentric ( B ) and turn Balance Wheel ( E ) slowly until the upper
edge
of
Arm Shaft Oil Hole ( C ) aligns with the lower edge
of
Reference
Hole
( G )
of
feed
and feed lifting
·-
8-
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