Newlong NP-7H, NP-7A Nstruction Manual/parts List
NEWLON6
MODEL
NP-7A
CNP-7H1
PORTABLE
FILLED
BAG
CLOSING
MACHINE
INSTRUCTION
MANUAL/PARTS LIST
NEWLONG
MACHINE
WORKS,
LTD.
No.14
CONTENTS
1.
SPECIFICATIONS
2
2.
PREPARATION
FOR
START
3
1. Oiling 3
2. Needle Setting 3
3. Threading 3
3.
START
4
4.
ADJUSTMENTS
5
1.
Thread
Tension
5
2.
PositionofNeedle
and
Looper
5
3.
PositionofFeed Dog 5
4.
PressureofPresser
Foot
5
5.
REPLACING
PARTS
6
6.
MAINTENANCE
&
LUBRICATION
7
7.
LUBRICATOR
7
1. Operation 7
2.
Maintenance
7
3.
Troubleshooting
8
8.
ORDERING
PARTS
9
NUMERICAL
INDEX
OF
PARTS
26
DIAGRAM
OF SCREW. NUT &
WASHER
28
- 1 -
1.
SPECIFICATIONS
TECHNICAL
DETAILS
Speed (sec/bag) 5—6
Seam
Single
Thread
Chain
Stitch
Stitch
Range (mm.) ,
7.2
(fixed)
Revolution
(rpm.)
1,600±125
Needle
DNx1-#25
Thread (vinylon, synthetic or
cotton)
20/6
Drive
Motor
60W
Power
Supply
110,
220
or 240V., A.C.
12V,
24V.,
D.C.
(specify
one.)
50—6OH2,
Single
Phase
Net Weight (kg) 5.2 Including Thread Cone,
Shoulder
Belt.
Machine Dimension (mm.)
360(L)
x 245(W) x 315(H)
Packing Dimension (eft.)
2.5
STANDARD
ACCESSORIES
1.
Needles
DN X
1-#
25
5 pcs.
2.
Thread
Vinylon
20/6
1 roll
3.
Screw
Driver 1
pee.
4.
Needle
Bar
Spanner
1
pee.
5.
Oil
1
can
6.
Carbon
brush 2 pcs.
- 2 -
2.
PREPARATION
FOR
START
1. Oiling (Fig. 1)
Oilingis imperative to keep the machine in good operating
condition. Fill oil in the reservoir (capacity 45 cc). To
feed oil, push the button of the lubricator. One push
feeds 0.08 ccofoil, which would normally service for
several hours
of
operation. Do not run the machine
outofoil, otherwise it will break
down.
2. Needle Setting (Fig. 2,
3,4)
Turn the pulley until Needle Bar reaches its highest
position. Loosen Needle Bar Clamping Nut, and set
Needle in the Bar as deep asit will go.
Be sure to set a Needle with its concave part facing
correctly toward the Looper.
Fbc
Clamping Nut tightly,
otherwise
Needle
may come loose during operation and
break.
3. Threading (Fig. 5)
The machine is delivered being threaded to show you
proper threading
of
the machine, which is shown in
Fig. 5, for identification. Follow the guide numbers
1 to 6ofFig. 5.
® Thread Eyelet
(D Thread Tension Eyelet
(3)
Tension
Disc
@ Thread Eyelet
d)
Needle
Bar
(6) Thread Eyelet
(7) Needle
(D
Tighten
Fig-i y
Loosen
Clannp
Nut
\
Scarf
Fig.4 J
3.
START
Before starting, make sure that the supply voltage accords
with the specification
of
the motor.
Hold the machine in your right hand and place your
index
finger
on the switchbutton on the handle. (Fig. 6)
Hold the bag in your left hand lightly and insert the bag
mouthbetweenFeed
Dog
and
Presser
Foot.(Fig.7)
Fig.
6 J
Switch
button
Run the machine with empty bags and make sure you
are well versed in its operation before entering into
actual operation.
Run the machine while keeping
the
bag straight. Never
pull or pull back the bag.
After closing, the thread is cut by the built-in nibbler
type
cutter.
When cutting the thread, leave at least 3 cm long extended
tail to prevent the unwillinglooseningofthe seam.(Fig. 9)
Throat
Plate
I®
Presser
Foot
Thread
Cutter
Knives
Fig.
9J
- 4 -
4.
ADJUSTMENTS
1.
Thread
Tension
Thread tension is adjustable by turning the Thread
Tension
Nut.
Turn the Nut clockwise for tighter tension and counter
clockwise
for
looser.
2. PositionofNeedle
and
Looper (Fig. 10)
Looper must pass the concave part
of
Needle with
clearanceof0.1 mm as shown in Fig. 10. Adjustment
of
the clearance can be done after loosening the screw
of
Looper Rocker.
3.
PositionofFeed
Dog
Feed Dog should be 2.5 mm above
throat
plate at its
highest position as shown in Fig. 11. The height of Feed
Dog is determined by the heightofFeed Dog Support
Screws(4 pcs. in all).
4.
PressureofPresser
Foot
When to adjust the pressure of Presser Foot, take out
Needle
Bar
Guard
and
loosen
Screw
of
Presser
Bar
Connection. Move up Presser Bar to increase the pressure
and down to decrease. After the adjustment, tighten the
Screw firmly.
- 5 -
Needle
Looper
Screw
Looper
Rocker
Fig.
10 y
Feed Dog
Support
Screw, (1S3/16-32 x 9)
(SM3/16x32x9L)
2.5mm
Feed
Dog
Stopper
Screw
(3/16S32034)
Feed
Dog
(244111)
Throat
Plate
(244122)
Fig.11J
5.
REPLACING
PARTS
For replacement or adjustmentofBall Rod, refer to
Fig. 12.
Take
out
Screw
(T)
and
disconnect
Rod
End
(2)
from
Needle
Bar
Lever
.
After
loosening
the Nut 0 ,
adjust
the
clearance
between
Connecting
Rod0and
Rod
End
(5) , so that
Needle
Bar
moves
in the
center
of
the clearance between the upper and lower Presser Bar
Bushings.(Needle Bar stroke is 37 mm).
To
fix
Eccentric
Cam
0 on
Main
Shaft
(8),
tighten
the
Screws
(9)
and
on
Main
Shaft
(8)
(Eccentric
Cam0should
contact
Spacer
(0)
slightly.).
The positionofNeedle is adjusted so that the distance
between the point of Needle (at its highest position)
and Throat Plate is 13 mm, after loosening screw on
Needle
Bar
Connection
Assembly
0 in
Fig.
12.
® Screw 11/64S40089
(D Rod End
6APOS8
(D
Needle
Bar
Lever
242051A
® Nut 1N8
(5) Connecting Rod Assembly 242011A
(D
Needle
BarConnection
Assembly
242101A
(7) Eccentric Cam (part of ConnectingRod
Assembly)
242011
(D
Main
Shaft 241101
CD®'
Screw
11/64S40001
O Spacer 241161
Adjust
Looper
Drive
Cam0when
neccessary
as
follows: (Refer to Fig. 13.).
a)
Apply
the
Screws0andQfon
the
taper
of
Main
Shaft
0 .
b)
Adjust
Arm
(B)
0 ,sothat
Looper
Drive
Cam
0
and
Arm
(A)
0
move
smoothly.
After
adjusting,
fix
the
Screw0tightly.
c)
The
clearance
between
Looper
Drive
Cam0and
Arm0is
effectedbySpring
0 .
Loosen
Screw
0
and
turn
Spring
Supporter
0 to
adjust
the
pressureofSpring
0 .
After
adjusting,
tighten
the
Screw
0 to
fasten
Spring
Supporter
0 .
(D
Main
Shaft 241101
®
(D"
Screw
15/64S28524
® Looper
Drive
Cam243012
® Looper Rocker Shaft Arm (B)243081
® LooperRocker Shaft Arm (A)243071
®
Screw
for
Looper
RockerShaft Arm
(B)
11/64S40009
©Spring 243131
® SpringSupporter 243121
®
Screw
for
Spring
Supporter
Block
9/64S40035
®
Spring
Supporter
Block
243111
(D
(D
m-
- 6 -
(D
(D
9.4mm
(D
Fig.
12 J
U
(0)
(D
(D
CD
Fig.
13 J
6.
MAINTENANCE
&
LUBRICATION
Clean the machine at the endofthe day's work. Wipe
dust and other foreign matter
off
the Feed Dog teeth
Looper and Throat Plate evelets where they are easily
gathered.
Care should be taken to keep the machine free from rust,
especially when to leave it unused for some time.
Recommended lubricants are Shell X-100, Motor. Oil
lOW/30, Shell Vitria Oil 31 or the equivalent. For
operation and maintenanceofthe lubricator, refer to
Section
7.
Important
I
When adjusting
the
machineorreplacing parts, always
disconnect
the
Electric Cord
from
the
power
source.
Thisisimportantinviewofsafetytothe
operator
and
adjuster.
7.
LUBRICATOR
1.
Operation
The lubricator comprises a
pump
and a reservoir. The
reservoir holds max 45 ccofoil. (Effective oil volume
is 28 cc.)
To operate
the
lubricator:
1. First unscrew
the
reservoir capbyhalfaturn.
*
2. Push the button to its lowest position (stroke: 12mm).
3. When released,
the
button
will automatically return
to its original position.
4. Lastly, tighten the cap to prevent oil leak during
operation.
*
Repeated
working
on
the
button
without
first
loosening
the
cap
may
produce
negative
pressureinthe
reservoir,
and
the
dustinthe
atmosphere
maybeeasily
introduced
in it
when
the
capisloosened.
2.
Maintenance
1. Keep
off
dust or foreign matter when to fill oil (They
may cause jammingofthe piston arid the check valve).
2. Rate of discharge is fixed and not adjustable (0.08 cc
per push).
3. At high temperatures, grease may run along points .
This is normal, grease being used when the lubricator
was assembled in our plant.
4. Reservoir is madeofhigh density polyethylene. Keep
off
fire and refrain from using organic, benzene, or
xylene chemicals for cleaning.
Check periodically for correct working of the pump.
(Repeat oil feed and look at the oil through the
discharge pipe.)
7 -
3.
Troubleshooting
Trouble
Cause
Remedy
Oil
not
fed.
Low
oil
level.
FiU
oil.
Full
stroke
movement
not
obtainable.
Dust
attached
on
the
interior
wallofthe pumping chamber.
Replace
lubricator.
Button
will
not
return.
Dust
accumulated,orbreak
of
spring.
Replace lubricator.
Oilleak from (S)
Wornout or displaced seal
of
0-Ring.
Replace lubricator.
Oil
leak
from
(§)
Wornout or displaced seal
of
packing.
Replace lubricator.
Oil
leak
from
© Loose plug. Tighten plug or Replace
lubricator.
PUSH
BUTTON
LUBRICATOR
Model;
NP-7A
packing
reservo
r
PISTON
STROKE:
12
mm
RESERVOIR
CAPACITY:
45
cc
EFFECTIVE
OIL
VOLUME:
28
cc
DISCHARGE
RATE:
0.08ccper
push
air
vent
- 8 -
push
button
stroke
pump
body
spring
piston
pumping
chamber
check
valve
discharge
nozzle
8.
ORDERING
PARTS
The parts list showing all the parts used in the machine is included in this book.
Check the list, and specify parts numbers and quantities required clearly.
Send yourorder to the nearest agent, distributor or one of
our
branch offices.
1. Description of each part and its stamp number is describedin this parts list.
Screws and nuts for parts are shown adjacent to the relevant parts. When ordering parts, describe
clearly
stamp
number
with
its
nameofpart.
2. The parts which have no Ref. Number can not be delivered independently; always order it as an
assembly.
3. A
setofassembled
parts
is represented by
the
stamp
numberofits
main
parts.
4.
The
last figure in
the
parts stamp number advances on each improvementofthe parts.
5.
Part
No.
described
in [ ]ofRemarks
means
old
part
No.
*
The
part
list is
subjecttochange
without
prior
notice.
CONTENTS
(1) THREAD
TENSION
AND COVER PARTS 10
(2)
BUSHINGS,
OILINGS
AND
HANDLE
PARTS 12
(3)
NEEDLE
BAR,
PRESSER
BAR
AND
DRIVING
PARTS
14
(4)
LOOPER
DRIVING
PARTS
16
(5) FEED
DRIVING
AND
THREAD
CUTTER
PARTS
18
(6)
MOTOR
PARTS
(ForTotally
Enclosed
Type
Motor)
20
(7)
SPECIAL
PARTS
FOR NP-7H TYPE 22
(8) CREPE
TAPE
BINDING
AND
CUTTER
PARTS
(Special OrderParts) 24
NUMERICAL
INDEX
OF
PARTS
26
- 9 -
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