Newlong DR-3A User Manual

NEWLONG INDUSTRIAL CO., LTD.

JUTE

BAG

SEWING

MACHINE

For Operator Safety

Thank you for purchasing the NLI Model
DR-3A Bag Sewing Machine Head.

• This manual contains

using the Model DR-3A Bag Sewing Machine
sure

to

read and understand this manual before use and

use the machine correctly.

• Keep this manual near

reference. Be sure
when

lending

company.

• Please order this manual

is lost.

• The contents of this manual are subject
without prior notice for improvement and safety
purpose.

~iazard

•

Be

careful, when you insert a bag to

the

sewing machine,

the

machine between the presser foot and feed dog.

•A•

Hazardous" mark is attached

sewing, be sure not

the

to

attach this manual

or

transferring

of

Being

or

to

touch on

instructions and precautions fbr

Head.

the

sewing machine for essy

to

the machine

it

to

another person

from

the nearest

Caught

your fingers

in

to

the

NLI

office if

to

the

Machine

be

closed into

may

be

caught

the machine. When

machine.

Be

or

it

change

in

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• A Needle Bar and Needle Thread Take-Up are

Hazard

moving
to

the
keep fingers and yourself away
and Needle Thread Take-Up.

of

Being

at

high speed.

machine. When

Caught

A·

Hazardous"

the

machine is in operation,

in

the

Machine

mark

from

the Needle Bar

is attached

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WARNING

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• The instruction

•

~O)•••it1•

manual

/ /

(-':J

and

parts

list

is

1

JAt-rcttltlta:l..1:0>t:~~-~L.f=JfJ!T

subject

to

change

without

prior

.f>~l!::b(~~~T

notice

.

O

WARNING

If

PERSONAL
FOLLOWING
OBSERVED.

1.

BE

SURE

FREE

OF

OIL,

RUBBISH

INJURY.

2.

DO

NOT

OPERATE

AREA

OR

THE

MACH I NE

TYPE

NOR

3.

DO

NOT

INSTRUCTION

4.

DO

NOT

OPERATE

THAN

SPECIFIED

5.

BE

SURE

ELECTRICAL

INJURY

SAFETY

THE

AREA

ALL

HAZARDS

MAY

PRECAUTIONS

SURROUNDING

SUCH

OR

ANYTHING

MACHINE

UNDER

OPERATE

WET

CONDITIONS.

IS

NOT

AN

WATER-PROOF

TYPE.

MACHINE

MANUAL.

MACHINE

FOR

MACHINE

IS

SAFETY

ON

THE

MACHINE.

CONNECTED

GROUND

RESULT

AS

THAT

IN

IF

THE

ARE

NOT

MACHINE

FIRE,

AN

WATER,

CAN

CAUSE

EXPLOSIVE

IS

EXPLOSION-PROOF

BEFORE

VOLTAGES

READING

OTHER

TO

BUILDING

(EARTH).

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6.

BE

SURE

POWER
BEFORE
PARTS

PERFORM

REPLACEMENT,

CLEANING.

7.

DO

NOT

OPERATE

COVERS

8.

DO
AND

REMOVED.

NOT

TOUCH

MOVING

OPERATION.

9.

BE

SURE

MACHINE

(LEVEL)

MA

I

NTENANCE,

ADJUSTMENTS,

10.

BE

SURE

THE

COMPLIES

11.

DO

"

NL

WITH

NOT

USE

I"

GENUINE

(AND

AIR

I

NG

MACH I NE

MACHINE

KNIFE,

PARTS

SURFACE

NEEDLE,

WHEN

IS

PLACED

WHEN

PARTS

CLEANING

MATERIAL

THE

SPARE

TO

MACHINE

PARTS

PARTS.

SUPPLY)

IS

OFF

MA I NTENANCE,

ADJUSTMENTS

WITH

GUARDS

PULLEY,

MACHINE

OR

AND

BELT

IS

IN

ON A SMOOTH

PERFORMING

REPLACEMENT,

OR

STORAGE.

BE

SEWN

OR

CLOSED

SPECIFICATIONS.

OTHER

THAN

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Identifying and Ordering Parts

Cautions When Using the Machine

Maintenance

Where the construction permits, each part
its part number.
part name

Safety Rules

To prevent personal injury:

All

power sources

•
before threading, oiling, adjusting or replacing parts.

All

cover and guards must be

•
machine.

•

Do

not tamper with safety cover, guards, etc., while

machine

On

and

model name

is

in operation.

all

orders, please include part number,

of

machine.

to

the machine must be turned

in

position before operating

is

stamped with

Safety Precautions

1)

Always
adjusting the machine or replacing parts.

2)

Wear safety glasses.

turn power off before threading, oiling, and

e .:::..:i-01/::1'I~

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3)

Make sure, before starting the machine, that

in

and shields are

4)

Do

not touch on the machine when it is run.

5)

Turn power off and make sure the
operate before you put your fingers under the
blades and the needles

6)

Do

not touch on the machine when it is run.

place and closed.

to

adjust.

cutter

all

covers

does not

cutter

in

mind

to

• Please keep
to

maintain the machine

• Thread fuzz or dust must be cleaned with air or brush on

in

throat plate,
after the day's work.

• Wipe the area easy

• Check the machine for loose screws and tighten them,
any, once a month.

Good

•

maintenance

the groove of feed dog or around looper

handle the machine carefully and

in

good condition.

to

rust with

will

oil

prolong

cloth.

the

machine

life.

3)

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CONTENTS/

1.

Specifications/{±~

2.

Threading/*iffiL,~ 2

3.

Lubrication

4.

Adjustment/1.ffilff

4-1 Needle
4-2

Aqjusting

a) The distance between

b) The clearance between

4-3 Adjusting Spreader (7-71-

/~AA

Setting(~{l):Jt~)

of

Looper

--------------------2

---------------------------3

(Jv-r{-(J)w/3~)

the

Needle

and

Looper

(~c:1v-/{-(J)igli!l)

the

Needle and Looper (~c:;v-/{-(l)rl!jllJ!1!)

,/,:/-(J)w/311rf)

...........................................................................................................................................................

~

1X

.............................................................................................

3
3

4
4
4

5

a) The distance between

b) The clearance between

4-4 Adjusting Thread Retainer
4-5 Adjusting Feed Dog

a) Height Aqjustment

b) Adjustment

Adjusting

4-6
4-7 Adjusting Needle Guard (~jJ-F(J)wl/l!lrf)
4-8

Presser

a) Height Aqjustment

b) Aqjustment

4-9 Thread Tension

a)

(:ff.:w/3-=f)

b)

(J::ff.:wl/liilll)

Parts

List/$£~

Numerical

in

Stitch

Foot

(;f!Jl.:c.1l2(J)wl/l!lrf)

in

............................................................................................................................................................................................................................

.......................................................................................................................................................................................................................

index

of Parts/,r~-o/mi31

the

Needle

and

Spreader (~c:7..7vo/,:/-(J)ffili!l)

the

Needle and Looper (~c:7..7vo/,:/-(J)F,lj~)

(:ff.:;j£1jq:-(J)w/311rf)

(J~!J1l2(l)wl/J!lrf)

(1:

r(J)wl/l!lrf)-------------------------6

Crosswise Direction (ti:~(J)wl/l!lrf) 6

Spacing(~§

(J:r(l)wl/J!lrf)

Crosswise Direction (ti:~(J)wl/l!lrf)

(:ff.:wl/lr~1:*)--------------------------8

lj!j(l)~J!)-----------------------6

...................................................................................................................................................................................

........................................................................................................................................................

.....................................................................................................................................................................

.........................................................................................................................................................

-------------------------8

--------------------8

---------------------10-

List of Screw, Nut & Washer/ *"1/, To/

r-,

?o/1/~--~

.....................................................................................

.......................................................................................

~

5

5
5
5

7

9

a
9

22~
24

23

1. Specifications/

2. Threading/

Seam specification and
Stitch Range
Standard Sstting
Maximum thickness
Feed
Needle Type end size
Thread (Cotton
Working speed
Maximum
Motor

speed

Motor

pulley diameter

V-belt

type

DESCRIPTION

One-needle

APPUCA TION ilffl

Double-thread chain

such

esjute

or

speed

and size

two-threadjute

bags,

stitch

of

Range

of

material

jute)

bag sewing machine 1 *ti- 2 *Kt •&a1,,at,:.,

stitch

machine

PP container

type

bep,

81.'Bit
a1.,1iMI

•••l.'i•

-~-1,\jf:

••Jnit

tt

M*

..

**

fl=.li.fillt

aa1EJ&1t

~~-lifilt

~~-:f-lJ-

V,(JL,t-

for

thin

to

thick

etc.

fabrics

401-SSa-1

6.5mm-15mm
10mm

Plain Feed
U01975-280
Cotton, aynt:hatic and
1,850rpm
2,000rpm

2,800rpm

M41

.a

0)

15mm

maximum

•a•':J

(50Hz) /

(/,

105mm (50Hz) /

(50Hz) / M40 (60Hz)

:ll)ij

..

PP

=:J!l7-J--1

2 a1la1,,at,:.,

jute

Mkt

..

•Rt

..

itakt

3,400,pm

(/,

90mm (80Hz)

(60Hz)

<~?~eO>MIJiJ'iI,JJ:IJ~~O)•tJ

Naed

la

CD

=~ =®=©=@=@=

Looper

®=©=®=®=®=®

Thread

Thread

C

..l:.

C T

ff-

1it

)

J

Loo

(

T~)

er

(i)

Thread

Needle

Thread

CJ:.*

J

Looper

Thread

CF~)

2

.

(jjg[)

D

3. Lubrication/

4. Adjustment/

(1) Oil

the

machine before you
eccentric parts on
oil holes in
running
minutes
oiling point.

(2) Check

the

the

at a low

the

machine.

start

it. Oiling points are all

the

main shaft, needle bar, oil cups,

the

base cover, and bottle oilers. Before

machine for production, idle it for about

speed

to

allow

the

oil

to

reach each

oil

level

in

the

bottle oilers before starting

Refill

when necessary.

(1)

At±t::--c~1/::..,,:a:-fficl/JTQ-~1H;:??,ftGi"r±}ll3:a:-L-

1.,

, 0

rct:rlil

11

m

:;d--11v.iJ:;,-7"_

10

'7-l::i'tlll3L-

i)~Jfi)t(;:aj>~:bt~QJ:::jt;:f.il;jm""t:

tt~v'o

(2) if-l-1v:;d--1'7-0)lll3:i::a:-ifi~

WI/JL-

--c<tt~v'o

fj:

,

::t.

$m

0)

--t

.r:::.

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,

it~,

Vif-l-1v:;d--1

lll3

--c<

--C??>G

NOTE:

1.

Poor

oiling

will

Use pure mineral
viscosity.

Ex. Shell Tellus Oil ClO.

cause seizing

oil

of 8 to

and

other problems.

12cSt

at

40

°C

kinematic

}±~

1.

~5ElltJ<-f'~~-c:""t

c!:::mf-t~~O)

90)""{:~"(fif~-:>t<t::~l,

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(

Jtl)

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1/Jfi!i./i'.ffii.,c

--c<tt~v'o

'1/'

.:c.Jv77

?.:;d-

-1

Jv

8-12cSt

C 10.

t-·:r::111,©mt~c!:::t~LJ

\0

(40°C)

0)*11!®t~rll3:a:-

*

4-1)

NEEDLE SETTING

(1) The needle should be installed

will

as it

(2) The needle must be installed with

toward

direction.

(3) Tighten

in position.

CAUTION:
Incorrect needle setting, bent needle, or
point or
other

go.

the

the

hole

problems.

rear

side as viewed in

needle bar nut

results

in

thread

in

the

(HA56)

skipping

needle bar as deep

the

to

secure

curved relief

the

bag feeding

the

worn

or

snapping,

needle

needle

or

4-1)

tf-O)JD{i-;tlt

(1) iJ-fj:iJ-~f;:

(2)

iJ-0)

fj!Jj

[;:

(3)

it~To/

[}i~~lj]

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"'"'.)i)>X.Q

fPJ~t'J:,

<QJ::?

r;:J&{-tlt--C

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It

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c!:::,

4-2)

LOOPER

For

the

convenience

throat plate, and feed

so

(80233)

needle,

4-2-a)

1) Install a looper

2) Turn the pulley clockwise until the looper

extreme right position. The distance between
center

bell crank

bell crank after loosening screw (22517) of the bell crank.

Be

3) The looper must
between the looper point and needle center is

the looper
loosen nuts (269,18) and turn joint rod (80641).
looper point approaches
turned

turned in

4) After obtaining the required dimension, hold the joint rod

in position and tighten nuts (269,18).

that

or

remove the needle

Lateral

sure

Movement

of

the looper lever and

(80637)

to

tighten the screw after adjusting. See Note

is in

in

the

the

of

adjusting, remove presser foot,

dog.

Loosen screw

needle guard (80225) will not contact

gUard.

of

Looper

(AS26XA)

also

the

S direction and moves

L direction. See Notes 2 and 3.

in looper lever (80613A)

must

be

82mm.

be

so adjusted that the distance

extreme right position. To adjust,

the

(89)

(Fiaure

2)

the

center

To adjust, move

needle when

away

of feed rocker

is

in the

the

of

ball joint of

8mm

the

when

the

bore

the

1.

when

The

rod is

it

is

4-2)

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<-0••

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it

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I / /

I

I

4'

I

Q

1

t,

4

NOTES:

1.

Be sure no

the

bell

2. The

3. The

the

ball

are

70mm

4-2--b)

Looper

1) The looper moves behind
and moves in front
In

these

needle. To adjust, loosen screw (318)

eccentric fork
looper lever

2)

As

the looper moves

to

1.5mm

edge
looper. To adjust, loosen screw (BP108)
connection (80659), and move

See Notes 1 and 2.

3)

As

the

needle,
keep a clearance
adjust, move

direction. Be
See Note 3.

play

in

the lateral direction is produced

crank as

nut

269

actjusting

joints,

instances,

beyond the left side

of

the

looper moves
the

it

is

fastened.

has left

apart.

and

(80613A) in the longitudinal direction.

needle hole must meet

looper should not contact the needle but

sure

threads.

can

be

done

with

ease

which

are

connected

Needle

Timing

(Figures 1

the

needle as

of

the needle as

the

looper should never touch

(80680A), tighten

to

the

to

the left and pass behind

of

0.2,...,

the

looper lever in the longitudinal

to

tighten screw

it

left and the looper point is 1

of

the

the

0.3mm

for

if the centers

with

the joint

and

it

goes

it

goes

to

of

looper avoid

halfway, and move

needle, the upper

the

lower side

of

needle bar vertically.

to

the

needle. To

(318)

after adjusting

of

rod,

3)

to

the left

the right,

the

of

the

needle bar

the

~-JI]

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2.

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~

70mm

4-2-b)

1)

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3)

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1

1

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