Brother BAS-361 Service Manual

SERVICE

MANUAL

FOR

BAS-361

PROGRAMMABLE ELECTRONIC

PATTERN SEWER

Profile

L

CONTENTS

DISASSEMBLY
MACHINE

OJ

Feed Guide Mechani sm and

Cover Removal . . . . . . . . . . . . . . . . . . . . . . 2

[I]

Rail-Y Cover

Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

[]] Machine Head Removal . . . . . . . . . . . . . . 6

STITCH

LENGTH

MACHINE
LOWER

AND

THREAD

BOBBIN

FOR

TRANSPORTATION

and

DO

Motor

AND

SPEED

CAPACITY

REPLACEMENT

FREQUENCY

~

MECHANICAL

OJ

Needle Bar. Thread Take-up lever,
Lower Shaft
Mechanism

[I]

Work

Clamp

Feed Mechani sm . . . . . . . . . . . . . . . . . . . . . 12

[]]

Feed Guide Mechanism

m

[[]

Thread Trimming Mechanism
Thread Catcher Mechanism

lil

Bottom Plunger Mechanism .

m

[]]

Bobbin Winder Mechani sm

ecdle Bar Descent

!Il

Needle Cooler

MACHINE
BLY

PROCEDURES

OJ

Bottom Plung

[I]

Thread

[]]

Thr

IT]

Cylinders . . . . . . . . . . . . . . . . . . . . . . . . . . .

[[]

Rotary

[I]

Stepping Foo t

[I]

Needle Bar. Thread

[I]

Needle Bar Descent Guard Assembly .

ead

Trimmer
Catcher

Hook .

DESCRIPTIONS

and Rotar

.......

Mechani sm . . . . . . . . . . . . . II

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

HEAD

er

......

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

y Hook

..

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

.........

...........

...........

Guard

and

DISASSEM-

Assembly

.......

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

Take-up

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

..

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

..

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

...........

.

.......

..........

.....

. . . .

.

. . 14

...

..

9

9

~

10

. 10

13

16
IS
IS

19

20
20

20
21
21
22
22
23
23

MACHINE

[

PROCEDURES

OJ

Needle Bar.

[I]

Stepp ing

OJ

Rotary Hook

IT]

Thread Catcher Mechanism

[}]

Thread Trimming Mechanism .

[I]

Bottom Plunger Assembly . .

[I]

Cylinders

[I]

Needle Bar Descent Guard Assembly

~

STANDARD

OJ

Adjustment

[I]

Adjustment

[]] Adjustment

the Needle

IT]

Adjustment

[[] Air Pressure Adjustment

[I]

Work Clamp Adju stment .

[I]

Work Clamp Position Adjustment

[]]

Mo

vable Knife Adjustment

!Il

Thread Trimming Slider Adjustment

[I£]

Thread Catcher S

(DJ

Bottom Plun

@]

Thr

ead Trimming Cylinder Speed

Adjustment . . . . . . . . . . . . . . . . . . . . . . . . .

[ill Thread Catcher Cylinder Adjustment

[ill Bottom Cylinder Speed Adjustment . . . .

[ill Work Clamp Cylind er Speed

Adju stment

[ill Presser Foot Lift

Adjustment . . . . . . . . . . . . . . . . . . . . . . . . .

[ill Movable Knife Timing Adjus tment

[ill Origin Position Adjustment . . . . . . . . . . . 42

[ill Ovcrlimit Switch Adjustment

~

Pulse

[ill Belt Tension Adjustment

0]

Encoder (Position Detector)

Adjustment . .

[Til

Direct Drive
Inspection

[E)

Bobbin Win

Foot

...

and

Motor

......

HEAD

Thr

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

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

ASSEMBLY

ead

Take

-up

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

.........

.

....

...........

........

...........

ADJUSTMENTS

of

the

Rotar

y Hook

of

the

1'\ccd

lc

Bar Height ...

of

the Clearance between

the Ro

tar

y Hook

of

the Presser

lid

ger

Adju stment

........

er

Backlash Adjustment . . .

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

Motor

..

der

Adjustment

Foot

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

er Adjustment

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

Cylinder Speed

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

Maintenance

........

.......

......

........

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

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

...........

..........

.

..........

...........

J

_ .

. .

.. ..

l ·

.....

...

.....

...

..... 39

. 25

.

..
..

~

24

25
27
2S
29
29
31

32

32
.12

32
33
34
34
.14

35

35
36
.16

37
37
.IX

3X

39

43
44
45

46

4S
4S

BEARING REPLACEMENT

AND ADJUSTMENT

[JJ

Slider Bearing Replacement
Adjustment

[I]

Guide Rail Hold

Replacement and Adju stment

[]] Raii-Y Bearing Replacement

Adjustment . . . . . . . . . . . . . . . . . . . . . . . . .

1IJ

Gear Replacement. Adjustment

Mai ntenan

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

er

Front

ce

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

and

Bearing

..........

and

and

49

49

50

51

. . 52

TROUBLE SHOOTING

FLOW

lEXPLANATION ON

MARKINGS]

[JJ

[I]

CHART

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

Troubleshooting Flow

for Machine
Troub
for Pr

ogramm

Control

leshooting Flow Chart

ing De vice

Device ........... !l

Chart

........

....

......

......

80

80

l

90

WORK
CONSTRUCTION

CLAMP

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

PROPER USE OF SPECIAL
ACCESSORIES

~

AUTO

[JJ

[I]

[]] /\tHo-eject Assembly

1IJ

~

ADJUSTMENT

~

ELE[TRICAL ADJUSTMENT

E.J

ECT

(optional parts)) . . . .

Auto-eject
Auto-eject Disassembly

Auto-eject Adjustment

Fun

ction

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

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

@IDE

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

...

..........

~

-

.........

53

60
60

61
63

...

67

68

~

-.

72

~ACTION

COUNTERMEASURE~

91

[JJ

Fu

se

Replacement . . . . . . . . . . . . . . . . . . . .

[I]

Circuit Boards
Re

pl

acemen t . . . . . . . . . . . . . . . . . . . . . . . .

[]] Dip Swit

!Il

Con

nectors . . . . . . . . . . . . . . . . . . . . . . . . . .

CONTROL CIRCUIT

ch

and

Dip Switch

Usc

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

BLOCK

DIAGRAM .

..

72

73
76
77

79

~DISASSEMBLY

FOR

MACHIN~

TRANSPORTATIO~

* This machine

Wh

en the entrance or e:w is narrow. fir

and then

di

i

~

14

sas~em

bl c

00 (W) X

in the following order until the machine

1390

(L) X

1200 (H) mm.

l!t

mca~ure

the entrance

- - transportatio n

~itc.:

a

nd

compa re

11

ill

pas~

through the entrance.

St

ep A (machine

Perfo

rm

steps I
and Cover
illustration at right

R

ei

nstallation

step 9

Removal." The dimension shown

"'

I.

of

11ith

size: 1390

"'9

in''ITJ Feed

of

these

is

performed

rem ova

the

machine·~

mm)

Guid

will

become 1180

parb

in the

I.

dimcnsiom

~.:

Mechanism

in the

mm
after machine
opposite orde

.

r.

Step 8 (machine

Perform
Removal"
Removal"

at righ t will become 960 mm . Rein!.taii<Hion aft

machine transportation

o

rder

St

Perform "
Remol'al"

Remo1al" and "

regular order.
become 860 mm. Rcinl!
t

ra

"ITJ

.

ep C (machine

ITJ

nsportation

size:

1180

mm)

Feed Guid e

and "!II Raii-Y Cover and

in

regular order.

size: 960

Feed Guide Mechani,m and Co1cr

and

"!II Raii-Y C01er and

ITJ

The

dimension

i~

the rc1er

Mcchani~m

The

i

~

the re1ersc

mm)

Machine Head Rcm01al"

l!l1011

tallation aft..:r machine

sc

of

rcmo1al.

and Cover

DD

dim ension shown

of

DD

n at right 11i

Mot or

rem01a l

Motor

er

in

ll

- I -

OJ

FEED GUIDE

MECHANISM

AND

COVER

REMOVAL

I.

(I)

(2) Loosen the nut 8
(3) Remove the set screws 0 for each

Feed Guide
tion

Remove the 4

f)

slightly back by

holder

arrow.

and

-~on

(front) 8 out

disconnect the

clamps

Mechanism

boltsO,

hand.

at

air

8.

and

remove the nylon clamps

Removal

and

in

the direction

each

tubes

and

after

pushing rail-Y

pull the guide rail

of

the four elbows,

8.

Installa-

of

the three

of

the

(4) After moving the feed guide mechanism

or

either the left
forward

(5) Installation

and

right side, pull the mechanism

remove.

is

the reverse

of

removal order.

* When inserting the feed guide mechanism

0 into the slider

guide

CD

on

and

insert while firmly pressing

top

of

the guide

*

Connect
the correspondingly

2. Needle
(I)

Remove the twelve

while raising needle plate L slightly, pull it

forward

(2) Installation

the

Plate L Removal

and

is

f),

the

top

bar

air

tubes 8

mounting

remove.

the reverse

rest the side

of

the slider spacer

down

48.

and

elbows 8 in

numbered

and

of

locations.

Installation

screws

removal order.

of

the feed

0.

0 to

4B,

on

the

and

-2-

3. Programmer Drawer Removal and Installation

(I)

Disconnect the connector 8 for the pro-

grammer.

(2) Pull

(3) Remove the programmer

(4) Installation

4. Panel Setting Plate Cover Removal and

(I)

(2) Holding both sides

out

the programmer drawer 8 and

remove the programmer

it

up

and

down.

is

the reverse

Installation

Remove the four screws 8 on the bottom and

the one screws
setting plate cover

cover

8.

8 on the side

pull it forward firmly and remove.

8.

drawer8

of

by shifting

removal order.

of

8.

of

the panel setting plate

the panel

Be

sure

to

*

8 after installing front cover R

5. Rotary Hook Cover Removal and Installation

(I)

Remove the four screws 8 in the rotary hook

cover R

8 and rotary hook cover front 8

R
When doing this step,
cover front

8 with your hand so they

(2) Installation

install the panel setting plate cover

8.

8,

and

remove the rotary hook cover

as

bottom

not fall.

8

and

is

the reverse

support

rotary hook cover

the rotary hook

do

of

removal order.

a set.

-3-

6. Front ('over Upper

(I)

Insert a screwdriver
front

cover

upper

screws

8.

(2)

Remove
the

(3) Slightly lift the

forward
Installation

(4)

*

When
first place the

cover 0 and

front

installing

the

fourscrews8

cover

and

remove.

is

the reverse

bottom

the legs.

0.

front

I.

Removal

from

L 0

cover

the

front

edge between

and

and

Installation

the

bottom

and

loosen the

on

the

upper

of

removal

cover

then finish installing.

upper

L

0.

upper

the

of

four

part

pull it

order.

L

front

the

of

0.

7. Front Cover Upper R Remm·al

(I)

Insert a
front
screws

(2)

Remove
the

(3)

Slightly
forward

Installation

(4)

When

*

first place
coverO

screwdriver

cover

upper

8.

the

three

front

cover

lift the front

and

is the reverse

installing the

the

and

R 0

screws8

0.

remove.

bottom

the legs.

from

cover

front

edge between

and

and

Installation

the

bottom

and

loosen the

in the

upper

of

removal

cover

then finish installing.

upper

R

0.

upper

the

of

two

part

pull it

order.

R O.

front

the

8. Panel Setting Plate Removal and Installation

(I)

Remove
legs.

(2) While

hand.
the

(3)

Gradually
side
it.

the

supporting

remove

cover.

cover

8.

two

bolts 0

the

screw 0 in the

reducing

slide the

side

the

on

cover

strength

cover

the

bottom

R 8 with

top

supporting

down

and

of

one

center

remO\·e

the

the

of

of

To

*

install

in the

-4-

the

cover

side

stops

cover.

and

first insert its

then

finish installing.

four

tabs

(4) Disconnect floppy

harne

!>~

B 0 from the floppy

the two
plate

(5)

Di!>eon

0.

{6)

Loosen the four screw:-

setting plate

(7)

l

mtallation

harnessc~

f)

.

nect the barne

and

pull it inside the panel setting plate

f)

forward and remove.

is

the reverse

harne!>s

out from the panel

A 0

and flop

dri,

·e 0 . and pull

s:-

0 to the switch panel

~.

pull the panel

of

removal order.

py

~etting

f)

.

When installing.

*

connectors firml

9. Needle Pl

Installation

(I) While holding need

remove th e eight bolts to needle plate support

guide brackets A

needle plate

To

(2)

~upport

e. I ex

p. 2). firmly tighten the eight bolts

in

stalling the
ate

pl

ate

install. temporarily install needle plate

guide bracket A e with the eight

t.

after installing needle plate

L.

be

~urc

to plug in all

y.

Support Guide Remo\'al and

le

plate support guidc A 0 .

e.

and

then remo

suppor

t guide

support

as

a single unit.

guides. remove needle

ve

bolt~

L(refer

e.

Af

the

to

ter

ITJ

RAlL-Y COVER AND DO MOTOR REMOVAL

(I) Loo!>e

(2) Remove the four screws e. and rcmO\C the

{3)

(4) Installation

*

n the two right a nd left set

remove

arm

Remo

motor

cord

as~embly

When
assembly. take note
shaft

prope

180° out

theY

rear cover 0 .

ve

the five

bracket assembly

is

pulled up slight. t

can

rcmo'

and

rl

y installed. the mot

of

-5-

-axis rail cover e.

serew!>

O . and

0.

he

be placed on the tabl

is

the

rC\Cr~e

ing the

DD motor

phase.

()()

or

make a mark

coupling posi ti on. If not

sen:wsO.and

remo\e

At this time. if the

DD

of

removal order.

motor

or

and shaft will

the

motor bracket

e.

brad.et

of

the arm

DO

be

II

arm

bed

*

foliO\\

(I)

Refer

a:-.is rail

Disconnect

(2)

DO motor
clamps
from the hole in the back
Disco

(3)

(4)

R

emo\e

DO

motor

ln::.tallati

(5)

remm

ing

\tep~

to

the

pre\iou'

co\cr

the encoder

circuit

0

(three strap

nnect th e DO m

the three

bracket

on

i'

a I "

neee,,a

Ill

order

.

page

and

arm

rear

assembly

board

L 0 , remove the cord

s), and pull the cord

of

oto

r power

'ere"'

0 .

a"embh

the

re\er'c

ot

r~.

and

rernme

co\er.

cord

the arm.

connector(@.

and

()

.

rcmmal

pert

orm

0 from

remme

order.

1 he

theY-

out

the

\\'hen

•

a!>~embl~.

-,haft

proper!~

J8Q

IIJ

MACHINE

I. Table

(

I)

Remo\c

(2)

Remo\e

(3) RemO\ e

0

Co

(4)

with the t

1

0te:

(5) I

rcmO\ tng

and

C

OUt

Remo,·al and ln!>

in

place.

mp

ress the bellows 0

Wh

en rern

in

side

then

nstallation

take

note

DD

motor

in\talled.

of

pha\C .

HEAD

the

four

the

four

the

t\\0

able

left 0

o\

edge

of the table

remove.

is

the r

the

I)

I)

motor

ur

m.tke a mark

coupling

the

nwtor

po,tlton. If

and

REMOVAL

tallation

bolt' 8 at

bolt-. 0

sere\\\ e holding

and

ing

table

c,crsc

the

at

the

table

and

remove together

table right 0 .

right 0 . ra ise

approx

of

rcmoHtl

uf

'halt

table

the

.

.10

brJckct
the

arm

not

"'II

be

left 0 .

right 0 .

bellO\\!>

th

e

em

and

order.

-6-

2.

Slider

and

Slider

tion

(I ) Remove the

remove the belt

••

(2) Hold slider

e by

hand.

left. lift

(3)

Remove the

slider

••

Note:

(4)

Installation

and

guideO

There

arc
in the slider guide
middle bolt

Guide

Remm·al

two

bolts 0 right

support

upper

and

while moving the slider right to

remove.

four

from the rail guide base brackets

four

plate e from the slider

left G

and

bolts

8.

places with three bolts each

0:

in

each

of

is

the reverse

of

and

Installa-

and

left.

slider

upper

and

remove the

remove only the

the four places.

removal

order.

and

right

3. Raii-Y

(I)

(2) Pull rail-Y 8 forward

(3)

4.

Arm

(I)

(2) Disconnect the six

(3) Remove the air hoses

Removal

Remove the

dog

f).

Installation

Bed
Remove
machine positioning brackets

trimmer

thread
with the

lated

to

air.

and

two

is

the reverse

Removal

the

four

assembly.

air

tubes.

Installation

boltsO.and

and

bolts

coupling

remove

and

remove.

of

removal

Installation

f)

in

each

theY

of

0.

nuts 8

and

remove together

on

the machine head re-

-ES

order.

the four

to

the

-7-

(4) With two

arm

(5) Installation

*

Be
the correspondingly numbered connection.

or

more people. raise

bed.

is

the reverse

sure to connect thread trimmer

and

of

removal order.

remove the

air

tubes to

-8-

~STITCH

*

On

the HAS-360. machine

selector switches

LENGTH

sreed will be automatically

ur

10

four set

AND

~reeds

can

MACHINE

adju~ted

be

selected.

SPEED~

according to stitch length. or by using the

sreed

s

~

0.1 ~ 2.4

2.5 ~ 4.4

4.5

LOWER

mrn
mm

~I'

d

mm

THREAD

REPLACEMENT

I.

With t

he

thread wou nd

be

low.

~

.

Col! on

Srun

rayon

to

appr

2.000

1.400
800

CAPACIT

FRE

ox.

90

UENCY

~[

of

the

#8

20

I

bobbin\

m

2

1.750

1.300
700

AND

outer diameter. thread length will

BOBBIN

#20

29

111

32

m

3

1.500

1.200
600

11

30

44 m

4

1.250

1.

100

500

be

as in the table

#50

81

m

87

m

Yinylon

Polyester

2.

When the lower thread

bobbin

~

will need

e
Col!on #8
Couon
Couon
Couon

Sru
Srun rayo n #50 0

Yinylon

#20
#30 0
#50 0 0 0

n rayon #20

#8

rer

lacing the

23m

-----------

30

111

is

wound to the caracities ind icated

number

of

tim

e~

shown in the following table.

2 mm

I

o

~

I

o

~

I I I

I

3 mrn

t~3

t~2

o

~

0

~2

I

~

---------

~

65

---------

in

the

abo

\C

table and make 10.000

4 mm 5

2 ~ 3

~2

I

I I

~2

0

2

"'

3

m

111111

3~4

2

~

3

1

~2

o~

t

~3

o~t

2"-' 4

----------

=----------

s

titchc

~.

the

6

111111

3~6

2~4

t

~2

t

o~t

2 ~ 3

o~t

3

"'

5

Polyest

er

#8

Polyester #30

0"'1

0 0

I 1 "-'2 1 "-'3

"-'

1

0

- 9 -

0"-'

2 ~ 4

1

I

~MECHANICAL

OJ

NEEDLE

BAR.

THREAD

DE§CRIPTIONS

TAKE-UP

LEVER. LOWER

))

SHAFT.

AND

ROTARY

HOOK

MECHANISM

I Needle

(I ) When the

(2)

(3)

II

(4)
(5)

(6)

{7)

*

(8)

Bar

and

Thread Take-up

DO

motor

shaft e.

The nee
vertically by mea ns
The needle

bw.hing [) 0 and the needle

Lower

When the
The lower shaft
The sp iral gear

rotary hook
twice.
A rot

with

Hand

Pushing
the a rm
Pushing

dle.:

bar

bar

Shaft

DD

ary

hook

the shaft

Rotation

on

the pulley

~ha

ft

on the

cr

ank 0

f)

sup

and

Hotary

motor

4B

(0

connected to the end

shaft~-

4D

~

-

8

can

stoppe

I.e'

cr .\lechanism

0 rotates in t

is

of

the needle

ported by the needle

Hook

0 rotates

is co nnected to timin

When the lower shaft

is connected to the end of the rotar) hook shaft

G)

will engage the

then be turned by hand.

r~

again

he

direction

connected to the take

bar

connecting rod e.

bar

guide

~lcchanism

in

the

arrow

of

stopper~

"ill

release the

of

bar

clamp 0

block~-

direction . timing pulley U

g pul

ley

the lower shaft

4B

rotates one full revolution . the

the

arro\\.

-up

and

D (I) and

causing the pulley shaft

stopper

the take-up len:r

le\er

crank

0.

is

guided by needle

~hould

move

smoothly

is

driven by the timing be

4B

meshes with the pinion gea r

to

it!.

original position.

and

4D

4D.

gear

crank

0

i~

rotated by the

mo\e~

the need

bar

bushing U 0 . needle

up and dO\\n.

rotates.

lt

a.

4D

rotar

y hook

and

rotates simultaneously

f)

to me!>h \\ith

arm

le

bar

clamp 0

bar

.

connected to the

s

haft~

ro tates

gearfl)

and

-10-

[I]

WORK CLAMP

MECHANISM

(I)

When

air

pressure

connected

(2) Lever A 8

stud

(3)

When
maximum

(4) When pressure in the pressure cylinder 8

to

is

e.

presser

and

is

increased

the pressure cylinder 8

connected

arm 0 drops

the

to

work

to

the pressure cylinders 8 by the

lever B 8 by the lever

and

the

clamp

holds the material firmly.

is

collar G is

pushed

is

increased by

forward

stud

in

and

lever A 8

f).

and

the presser

line with lever stud

air

tube

air

tubes

0.

is

rocked via the

arm 0 is

f).

work

O. the presser

the

cylinder setting plate 8

collar

G.

lowered. pivoting

clamp

pressure reaches a

arm

0 rises.

on

hinge

-11-

IIJ

FEED

[X-aixs]

1.

When the pulse

the timing belt e

2.

The
slider

3.

The

MECHANISM

timing belt 8

8.

slider 8

(DRIVE SIDE)

motor

0 rotat..:s. the timing pulley H 0

arc

driven

is

connected to the belt

is

guided by the slider guide G.

in

turn.

support

and

is

panel

0.

relays pulse

turned

and

motor

via

g..:ar X 8

the belt

support

0 revolutions

and

the

gear

assemhly 8

panel 0

to

is

connected to the

the feed guide assembly.

and

[Y-axis]

motor

4. When the pulse
moves rail-Y $ in a straight line.

5.

Rail-Y

the rail guide holder front 6' which

4D

is guided by raii-Y guide front

0 rotates. the pulse

motor

gear

4»

and

rail-Y guide

is

connected the end

G)

meshes with the rack 8 installed

readD.

of

rail- Y

$.

-12-

and

relays pulse

motor

on

rail- Y

f)

revolutions

$.and

to

[I]

FEED

GUIDE

MECHANISM

[X-axis]

I. When the

upper

2.

The
to the

[Y-axis]

3. When the guide rail holder front

4.

The
The

5.
to the

sliderO

left

8.

feed guide plate front 0

clamp

feed guide 0

feed guide plate front 0

clamp

slider

f)

f)

and

and

moves a full

upper

feed plate 0 which

is

connected

feed plate 0 which

center 0 and

and

and

trip

on

the X-a.xis.

slider

clamp

mechanism

arc

mm·es a full trip

to

feed guide X

clamp

mechanism

arc

connected

motion

upper

f)

arcconneetcd

connected

on

theY

41>:

it

f)

arc

is

relayed

right

0.

to

these.

-a

.xis.

is

guided by the slider 0

connected

to

the guide plate front 0

to

to

action

to

the feed

the feed

is

relayed

the feed

guideO

guide8.and

guideO.

to

matching

and

and

that

mo,·es

clamp

is

guided by slider

motion

feed guide X
on

the Y -axis.

and

motion

mechanism

is

relayed

is

relayed

41).

0.

-13-

IT]

THREAD

TRIMMING

MECHANISM

(I)

Thread

I.

When
arrow

The

2.
arm

3.

The
movable knife

4. When the solenoid valve 0 becomes off. the

and

Trimming

the thread
direction.

knife lever 8 connected

shaft

G.

forked-part

the movable knife 8 returns

Mechanism

trimming

of

knife rock

8 connected

signal

to

the

arm

to

the movable knife base assembly

turns

the solenoid valve 0

thread

trimming

A 8 fits the movable knife base assembly

to

its original position.

thread

on.

the

thread

trimming

cylinder 8 activates knife rock

8.

trimming

cylinder8

moves opposite

cylinder 8 moves in

arm

A 8 via the knife rock

8.

and

thereby moves the

to

the

arrow

the

direction

-14-

(II)

Upper

and

(I)

When the needle

lowest position. the
upper
trimmer
knife

thread

is

stationary

Lower

signal has been sent.

Thread

is

moved 2.2

loop. At this time. the

because

rotary

Trimming

mm

hook

the

above

point

but

signal

the needle

catches the

thread

the

movable

is

delayed.

(2)

The
point
The

The

(3)

been opened by
spreading

upper

thread

loop

and

passes

around

movable knife begins

needle rises
lifts the
passes

upper

through

and

thread.

the

the

occurs.

is

pulled by the

the

inner

to

the

thread

The

upper

thread

rotary

hook

move.

movable

loop

point

rotary

hook

..

take-up

knife tip

which has

and

hook

lever

loop

Movable
knife

•

Lower

Movable

If this timing

appear
and

m1sses.

thread

knife

in

may be the cause

is

the

operation

either

too

fast

of

of

or

the

thread

too

slow. it will

movable knife

trimming

(4)

The

*

needle rises.

The

upper
When
stress

The

thread

after

the

is

made

thread

and

stops

at

the needle up position; the

or

lower thread

movable

on

the

length set by the movable knife becomes

trimming.

hooked

knife pulls

upper

This effects the stitch

the

thread

by

thread

and

the

it pulls

movable

and

retracts.

at

knife

out

smoothly.

both

the

start

thread

is

cut by

the

thread

the

needle

of

new sewing.

take-up

the

fixed knife as the

tension release activates

thread

length

-15-

lever

approaches

movable

and

the

bobbin

its highest

knife retracts.

so

that

no

thread length

point.

excess

I

[II

THREAD

CATCHER

MECHANISM

STANDARD SPECIFICATION

(I)

Thread Catcher Mechanism

L.

When the solenoid valve 0 becomes

ON

before the start

arrow direction.

2.

The

thread catcher

rock arm shaft B

3.

The forked-part
catcher spring

4.

When the synchronization signal at the first stitch at the start
catcher cylinder

lever@

connected to the thread catcher cylind

0.

of

knife rock arm B 0

8

co

nnected to movable knife base bracket B 0 .

f)

moves opposite

fits th

e movable knife base brack

to

arrow direction and the thread catcher spring

tion.

of

sewing,

of

the thread catcher cylinder

er

f}

activates the knife rock arm B 0 via knife

et

B 0 and th ereby activates the thread

sewing turns the solenoid valve 0

f)

f}

moves

in the

OFF

, the thread

returns to its original posi-

SPECIFICATIONS

(I)

Thread Catc

1.

When the solenoid valve 0 becomes

FOR

her

Mechanism

BAG ASSEMBLY AND NECKTIE

ON

before the start

of

sewin

g,

the thread catcher cylinder
arrow direction.
The

2.

thread catcher lever ~ connected to the thread catcher cylinder

rock arm shaft B

3.

The

forked-part of knife rock arm B 0 fits the mo vab le knife base bracket B 0 and thereby activates the thread

catcher spring

0.

8 connected to movable knife base bracket B

0.

f)

activates the knife rock arm B 0 via knife

4. When the synchronization signal at the first stitch at the start of sewing turns the solenoid valv
catcher

cylinder

f}

moves

oppo

site to arrow direction and the thread catcher spring

f)

returns to its original posi-

tion.

d1

e start

of

5. After several stitches has been sewn at

cy

linder

(j)

mo

the

ves in the direction

of

the arro

sewing, the signal from the machine turns on the solenoid valve,

w,

the thread catcher spring

f)

rotates and the needle thread is re-

leased.

f)

moves

in

the

e 0 OFF, the thread

-16-

(II) Thread Catcher Operation

Thread catcher

I. Before sewing starts. the thread catcher spring

advances.

2.

At the first stitch. the rotary hook point catches the
upper thread.
pulled below the needle plate.

and

the end

of

the upper thread

is

The

3.
catcher
thread
spring

synchronization signal causes the thread

spring

to

retract.

is

held lightly between the thread catcher

and

the

bottom

and

the tip

of

the needle plate.

of

the upper

-17-

4.

As

sewing continues. the upper thread

from the thread catcher spring.

is

released

[!]

BOTTOM PLUNGER

MECHANISM

;?f8if'

(Up) (Down)

I. When the solenoid valve 0 becomes

direction.

2.

The

bottom

bottom

3. When sewing ends
direction

lever plate 8 connected

plunger 8 via the

and

the solenoid valve 0 becomes off. the

and

the

bottom

plunger 8 returns to its original position.

bottom

shaft

to

on

the

at

bottom

8.

the

start

of

cylinder8

sewing. the

[I)

I. When the bobbin

bottom

is fixed to the

bottom

BOBBIN

winder spindle

8

is

swung towards the bobbin winder spindle

cylinder 8 moves in the

bottom

cylinder 8 moves opposite

WINDER

0.

and

leverG.and

is

O. the bobbin winder

mounted on the bobbin winder
pin

8 presses the leaf spring

2.

The leaf spring 8

winder lever
winder screw

limit switch 0 turns

motor
bobbin as long as the bobbin winder
rotating.

3.

When the specified

onto

the bobbin. the bobbin winder
hinge pin
lever

8 moves away from the limit switch

the

motor

spindle

8

8.

0 begins to

0 swings back. the bobbin winder

0 stops.

0 stops.

is

and

revolves

When the bobbin winder

turn.

amount

activates the

MECHANISM

mounted

bobbin

stop

on

winder

latch

trippingarmG

stop

8.

mounted

on.

winding thread

and

on

around

the bobbin winder

of

thread

the bobbin winder

arrow

to

arrow

the bobbin

stop

latch

latch hinge

the bobbin

the bobbin

motor

onto

the

spindleO

is

wound

stop

latch

0.

is

-18-

IT]

NEEDLE BAR

DESCENT

GUARD

AND

NEEDLE COOLER

I. When the feed mechanism functions. the solenoid 0 is on. thin material cylinder

of

the

arrow,

0 will

2.

When material feed
the

arrow.

3. At the beginning
direction
arrow.

4.

During

will move

*

The

needle cooler 8 will only function while solenoid 0

* Tension release will only function when the machine

times

it

and

presser foot lifter cylinder 0 will

then

turn

off.

and

the thin material cylinder

is

completed. the presser foot lifter cylinder 0 will move back. opposite

assuming

of

the

During sewing solenoid 0 will remain on.

thread cutting after sewing

in

the direction

holds the needle thread tight.

the

stand-by

of

sewing when the solenoid 0

arrow.

and

the presser foot lifter cylinder 0 will move naturally

of

condition illustrated above.

is

completed. solenoid 0 will

the

arrow.

operate

58

turns

and

vertically

will move back. opposite

on,

the thin material cylinder

the

needle cooler 8 will continue

is

is

in

the stand-by mode

on.

turn

in

off. and

the direction

the

and

-19-

58

will move in the direction

of

the

arrow.

The

to

the direction

58

in

the

opposite direction

presser foot

during

thread cutting;

of

to

the direction

will move in the

to

function.

liftercylinderO

solenoid

the arrow.

of

of

the

at

other

~MACHINE

(;)

HEAD

0
0

DISASSEMBLY

PROCEDURES)

•

To

S

tar

t

Perform these steps aft
Feed Guide Mechanism a
machine tran sportation.

OJ

BOTTOM PLUNGER

I. Remove the two flat screws

needle

2.

Remo

plates

ve

sto

p ring E 8

e.

er

performing the steps

nd

ASSEMBLY

and

e.

3. Loo

se

n the screw 8 from

0

4. Remove the stop ring
the bottom lever shaft
bott om lever

IT]

THREAD

I.

Remove the st

e.

pin

2. Remo

3. Loosen

ve
movable
connected parts still attached.

C).

TRIMMER

op

the t

wo

knife

th

e screw 8 and remove the knife lever

and

0.

ring 0 and pull out the link

screws

base bracket G with all

8.

o.

4.

Loosen the set

remove knife rock

sha

ft

A~-

5.

Remo

ve

the two screws

movable knife base assem bly

6. Remove screws
movable knife

7. Remove the two screws

thread presser spring

s

pnn

g.

sc

rew 8 and screw

arm

A 0

4D.

fD

and

4D

G).

4D

4D

and then thr

"OJ

Cover Removal" for

0.

and

remove

pull out the link pin

be

low the bed.

washer

an

8;

remove

and remove the

and remove the

0.

and

d knife rock

and

remo

ve

arm

the

f».

and remove the

an

d remove the

ead catch

er

-20

-

[l]

THREAD CATCHER

I. Remove the two screws O.

thread catcher spring

2.

Remove the

pinG.

3.

Remove the four screws
thread
connected.

4.

Loosen screw

G.

lever

5.

Loosen the two screws 0

rock

arm

6.

Loosen screw 8 from below the bed. pull

slide shaft 8

8

•.

stop

catcher

0.

8 0

48.

8.

ring

8.

base 8 with all parts still

and

remove the thread catcher

and

knife rock

and

remove movable knife base

and

8.

and

and

pull

out

and

remove knife

arm

remove the

the link

remove the

shaft 8

4D.

out

11]

CYLINDERS

I. Remove the nuts 0 for each

connected to the elbows.
tubes.

2.

Remove the

the knife cylinder base

8

and

3. Remove the
the

bottom

screws

4. Remove the bolt 0

thread catcher cylinder base
screws
cylinder

two

screws

the knife cylinder

two

screws 8

cylinder base

0

and

remove the

8

and

remove the threa'd

48.

and

8.

8.

remove the two screws

8.

and

of

the six

air

tubes

disconnect the

and

after removing

and

after removing

0.

remove the two

bottom

after removing the

cylinder

49.

remove the two

0.

catcher

air

-21-

rn

ROTARY

HOOK

I. Remove the screw

case holder position bracket

2.

Loosen the three screws

rotary

!I]

I.

Remove the three screws

plate

2.

Remove the screws O.

foot drive

3.

Remove the presser foot adjusting

remove the presser spring guide G. presser

spring

4.

Loosen the set screw

foot

5.

Loosen the set screw
down
presser

hook

STEPPING FOOT

8.

cam

8.

O.

and

out.

bar

clamp

0.

0.

and

remove the bobliin

8.

8.

and

0.

and remove the face

and

remove the stepping

8.

screwO.

0.

and

remove the presser

41!).

pull the presser

and

remove the stepping foot

f).

remove the

and

badD

-~----~

48

:

I

I

I
I

I

I

I

I

1

...

-~

----

----

--

-22-

12]

NEEDLE BAR, THREAD TAKE-UP

I.

Remove the set screw

needle

8.

remove the thread guide

2.

Remove the oil

3.

Loosen screws 0

up

and

out

from the

stepping foot presser

4.

Remove the flat screw 0 (left-hand thread), and

remove the needle
to the needle
When doing this. be careful not
needle bearing

block$.

bar

0.

capO.

and

0.

bar

bar

clamp

crank rod

4D

or

and

after removing the

pull the needle

arm.

and

remove the

clamp

O.

G)

still connected

Gi).

to

the needle

8.

drop

bar

bar

the

guide

8

5.

Remove oil caps

6.

Loosen screws
bar

crank

f,D.

drop

the needle bearing

7.

Loosen screw @). pull

stud

0 and remove the thread take-up lever

[!]

NEEDLE BAR
ASSEMBLY

I.

Disconnect the

nipple

O.

2.

Remove the

0.

and

single Allen bolt
thin material cylinder
and

the cylinder support

3.

Remove the E-shaped

pin

Gi),

and

4.

Remove the two screws fl),

bracket

5.

Loosen the Allen bolt

cylinder bracket

41).

fD

fl

and

When doing this, be careful

DESCENT

air

hose 8 from the nylon hose

four

Allen bolts

then

remove the piston rod

$.

and

8,

5

snap

6}.

and

remove the needle

G)

and

washer

out

the rotary take-up

GUARD

8.

two Allen bolts

0.

and

then remove

e.

coupling

0.

ring

0.

and

remove the

fl.

and

remove the

not

fJ).

f).

hook

••

and

link

joint@).

hook

to

-23-

~MACHINE

HEAD

ASSEMBLY

PROCEDURES)

[!]

NEEDLE BAR,

I. Connect the thread take-up lever 0 to the

by

the thread take-up lever stud

sc

rew e.

2. Put the need le bearing 0

up lever

one

tighten screw s

In

the needle

3. Insert o

0:

hand.

in

stall so that screw

bar

il

caps 0 and

THREAD

wh

il

e holding the washer 0

sert the needle bar crank e.

f)

and

0 to ho

f)

crank e.

~

TAKE-UP

f).

onto

the thread take-

ld

aligns with the screw

-

and

tighten

wi

it in place.

arm

th

an

in

d

4. Put need le be_
rod

4D

the nat scre\\

5.

Put t

he

bar

guide.

clamp

6. Insert

7. Insert o

8. Install the needle

the needle

pass

it

cl

amr

temporarily tighten screws

of

the needle ba

aringf)

and connect to the needle

~(l

needle bar gu

and

insert the tip

6)

.

bar~

through the stepping foot needle

4D

a

nd

the needle

il

cap

fJ)

.

bar

r.

and tight

onto t

he

needle ba r crank

bar

crank with

eft-hand

id

thread guide 0 on the end

thread).

e block e into the needle

of

the needle

from the t

bar

fP)

and

en scr

or

of

clamp

~

ew

fl).

the

«)

-

bar

arm.

bar

and

- 24 -

[!]

STEPPING FOOT

I.

Pass the presser
the

arm,

and

clamp

8.

Install so
top

are

2.

Install the presser foot 8 on the

the presser

3.

Install the needle 8 in the needle bar.

4.

After pressing pulley
clockwise
the presser

that

end

of

in

close alignment.

8 aligns with the center

presser foot
fix the position.

5.

Set the presser
spring
tighten the presser spring adjustment screw
appropriately.

o.

bar 0 through

install the stepping foot presser

the end

the stepping foot presser

bar

of

the presser

0 with screw

8.

and

lower the needle bar; now, move

bar 0 and

8.

barO

and

adjust

of

and

then tighten set screw

in

place, insert the presser

presser spring guide

8.

turn

so

that

the

needle hole

the

bar

bottom

the pulley 8

bottom

bar

the needle

and

clamp

end

e.

in

f)

of

bar

the

of

the

to

and

Ci)

[I]

ROTARY HOOK

I. Temporarily

rotary

hook

2.

Install the

8

to

the

bottom

r---

:?7

--

-25-

connect

shaft

bobbin

the

rotary

8 by the three set screws

case

holder

of

the bed with screw

hook 0 to

the

8.

position bracket

8.

3.

Turn

the pulley

from the needle lowest position;
loosen the three set screws
rotary

hook

point 8 aligns with the center

After adjusting, the
point

and

0.08 mm.

and

raise the needle 2.2 mm

0.

adjusting

the needle should

so

gap

between the rotary

8

and

that

the

of

be

between 0.0 I

at

this time,

rotate the

rotary

hook

the needle.

hook

"'

~:

Center

f+-l

\/

of

-----.-

needle

2.2

mm

4.

When the pulley
point

e.

is

aligned with the needle center. loosen
screws
position

point 0 to needle hole

0

and

of

the needle

is

turned and the rotary hook

0'.

and adjust the vertical

bar

so

that

the rotary

top

gap

is

1.5"'

2.0 mm.

hook

Center

of

needle

-26-

0

5.

After mounting the U-part
drive cam
stepping foot needle
screw

6. Rest the stepping foot needle
the

top

place with screw

7.

Attach the face plate4D with the three

[!]

THREAD CATCHER

I. Pass slide shaft B 0 through the bed

slider B

2.

Align the edge

side

3.

Connect knife rock

shaft B 8 with the two screws

one

of

4.

Pass knife rock
thread catcher base bracket
catcher

temporarily tighten screw 0

vertical play (along the shaft).

5.

Mount
the roller
attach
bottom

6. Temporarily install the thread catcher spring
with two screws

0

onto

4D.

of

the needle

41.

f).

of

slide shaft B 0 even with the

of

the bed,

the screws meets the screw stop.

lever 0

the U-part

the thread catcher base bracket 8 to the

of

and

tighten screw

arm

arm

at

the

of

on

the

bottom

the bed with two screws G).

48.

of

the stepping foot

the stud screw

bar

clamp. secure

bar

clamp

bar

clamp.

and

MECHANISM

8.

B 8 to knifer rock

0.

Install

shaft B 8

f);

install the thread

bottom

knife rock

of

so

of

slider B

shaft B

that

arm

G)

of

it

48

tighten

screws&.

and

install

so

through

0.

there

B 8

f);

next,

the

with

on

in

arm
that

the

and

is

no

onto

4D

-27-