Mitsubishi DY-356 User Manual

MITSUBISHI

Industrial

TECHNICAL

Single-Needle

Automatic

"^Modei

DY-359

Sewing

INFORMATION

Lockstitch,

Undertrlmmer

Machine

Upper-S

Lower-feed,

A

ET-024A

ELECTRIC

MITSUBISHI.

CONTENTS

[T]

CONSTRUCTION

SPECIFICATIONS

3]

DETAIL

3.1

Electric

3.2

Machine

PREPARATION

4.1

InstallationofSewing

4.2

AdjustnnentofMachine

5

ADJUSTMENT

5.1

General

Thread

5.2

5.2.1

5.2.2

5.2.3

5.2.4

Adjusting

5.3

5.4

5.5

5.6

SCHEMAOFTHREAD

Section

Trimmer

Construction

Instruction

Installing

Connecting

5.2.5

5.2.6

5.2.7

5.2.8

5.2.9

Precaution

Aligning

Hook,

Knife

Installing

Installing

Adjusting

Adjusting

Bobbin

Head

the

for

the

DY-359-BZ

Section

BEFORE

Mechanism

the

driving

the

the

knife

the

Needle

Solenoid

Needle

Case

(1,2)-

OPERATION

Machine

Stop

knife

the

knife

shaft

thread

thread

engagement

needle

Thread

Installation

and

TRIMMER

••

Position

base

base

trimmer

trimmer

thread

Remaining

Hook

SYSTEM

and

Motor

and

fixed knife bracket

and

driving

solenoid

cam

loosening

Length

crank

unit

length

units

1

2

3~5

6-7

8-12

•8

•8

•8

•8

•8

•9

-9
10
10

11
11
12
12

12

12

6

TROUBLESHOOTING

This Technical Information mainly describes

motor and

the

control equipment, refer to the respective Manual or Information. The

the

thread trimming mechanism. For

adjusting procedure for Single-needle Lockstitch Sewing Machine

correspondingly applied to other adjustments not covered in this Technical Information.

DY-350

13

the

may be

[l]

COIMSTRUCTIOIM

IMSflKiBgl

i

urn

^TriuBISH!

m

®

Pre-tension

Feed

lifting rock

(2)

Upper

crank

®

Presser

Q3.I

Thread

Gj'

Pushbutton

CQ)

Presser

€g)

Thread guide

(Q)

Detector

(S' Vertical
03'

Crank

di

Thread

feed

bar

guide

foot

shaft

rod

trimmer

shaft

lifting rock

spring

solenoid

shaft

(g)

(D

11;

®

dj)

(|0)

®

iS)

®
®

(55)

Feed

lifting rock

right

Presser

Presser

Feed

driving

left

Presser

Needle

Feed

dog

Arm

shaft

Feed

forked

Reverse
Feed

lifting

Thread

bar

regulating

bar

spring

bar

lifter

bar

connecting

sewing

shaft

trimmer

rock

shaft

shaft

lever

crank,

thumb

crank,

rod

Take-up

Feed

regulating

Be

crank

Tension

Walking

Walking

Feed

rock

Balance

Feed

regulating

Feed

Hook

shaft

Knee

lifter

lever

regulator

foot

foot

wheel

rock

shaft

shaft

screw

guide

crank

dial

I®

link

2

SPECIFICATIONS

Item

Material

Max.

speed

Max. stitch

Needle

Thread

Presser

bar

take-up

foot

Alternating

Stitch

length

Needle

Needle

Hook

Bobbin

Bobbin

type

plate

case

—

weight

(s.p.m)

length

stroke

clearance

presser

stroke

fine

(mm)

(mm)

(mm)

(mm)

lift

(mm)

adjustable

range

Model

(mm)

Heavy

2000

0to8

38

73

Hand;6

2to5

±0.5

DB X 1

(Needle

Full-rotation

(Large

type

Racing

Steel

made

Knee:15

#22

or

hole)

2.5

automatic

for

prevention

for

DP X 17

<l>

thread

spring

thread

DY-359-22-BZ

#22

lubrication

trimmer

use)

equipped

trimmer

use

Thread

Trimming

Bed

Motor

Control

Control

trimming

speed

dimensions

and

Control

box

panel

Motor

mechanism

(s.p.m)

(mm)

Equipment

LF-M-120

LF-C2.

C4,

Plane

200

475

CB-Z402E

C6,

C8

scissors

X

178

type

with

fixed

knife

and

CA-Z402E

movable

knife

0

3.1

DET/s

Elect

V

i!

I

Back
Thread
Control
Pedal

Phase

solenoid

trimmer

box

reversing

® Sewing

®

Balance

Q)

Motor

machine

wheel

® Machine cord plug
® Control panel

Touch
Detector

Drive
Detector
Power

switch

pulley

cord

ON/OFF

plug

pushbutton

solenoid

plug

3.2

Q

Machine

Head

Section

(1)

(D

Parts

Name

® Flexible

® Knife

(2) Knife

(0)

Stopper

(Q)

Knife

® Flexible driving lever

wire

holding

drive

base

(left)

crank

bracket

saddle

0

Thread

tension

C§)

Movable

(f)

Cam

dJ)

Bracket

0? Knife driving

(fi)

Solenoid

knife (left)

follower

for

assy

crank

fixed

shaft

release

(1)

blade

assy

(3)

Needle

(D Fixed

(D

Cam

d|) Link

15)

Spring

bar

connecting

blade

follower

crank

(2)

link

guide

Machine

Head

Section

(2)

(D

(D

QD

Parts

®

(2)

(2)

(ID>
(Q)

<3|)

(@)

Name

Stepped

Switch

Solenoid

Link

Bracket

Reverse

Spring

shaft

sewing

lever

(D

(E)

d)

d3)

(0)

(Q)

Cover

Spring

Arm

side

Set

pin

Reverse

Spring

cover

sewing

clank

assy

(D

Screw

(D

Switch

(D

Shaft

(0)

Feed regulator

®

Shaft

® Bracket

lever

Q

PREPARATION

4.1

Installation

DY-359-BZ

Face

Back

tack

Phase

reversing

LIMI-STOP

of

plate

switch

clutch

BEFORE

Sewing

Arm

/

nr

plug

motor

OPERATION

Machine

LF

I —

control

/

and

panel

Balance

(D

Motor

(option)

Detector

Belt

wheel

Power

ON/OFF

switch

Table

LF

control

Passing the machine cords

round

•

panel

Wiring

box

Note:

Pass

through

plugs

between

Before

to

depress

ton

two

the

into

Control

box

sewing

machine

pluggingorunplugging,

to

"OFF".

cables

round

the

POWER

from

holeinthe

respective

ON/OFF

the

plug

sewing

table

Plug from

Rubber

and

pushbut

machine

and

receptacles.

machine

cap

control

be

sure

put

the

Power

"10

Brake

Clutch

Speed

Control

Q

Option

Detector

panel

Needle

1 \

position

Presser

Prei

Option

0

Machine

foot

2

up

4.2

Adjustment

When

thread
stops

the

position

adjusted.

of

setting

following

the

pedal

trimming

with

the

white timing mark

of

all

However,ifthe

alignment

position of light

procedure;

[Preparation]

of

Machine

is kicked

is

timing

sewing

more

down

completed,

mark

(B)

©.

The needle bar

machines

timing

than

3mm,

shielding

Stop

by

the

matching

are

marks

Position

heel

machine

factory-

are

adjust

disc in

and

with

stop

out

the

the

DY-359-BZ

Second

timing

timing

mark

mark

Shielding

Screw

disc

A

1) Disconnect

which

the

control

2)

Remove

3)

Run

the

at UP position. After

preparation,

comes

the

machine

the

plug (12 pins) of cable,

outofthe

box.

detector

start

and

the

following

machine

cover.

stop

the

with

completion

[Adjustment]

1) While holding

hand,

turn

the

the

balance

light

shielding

wheel

timing marks (i) and © are aligned.

2)

3)

down)

Then,

from

Repeat

needle

position.

pedal

several

always

set

the

operation

times

stops

the

plug (12 pins), which

machine

(toe

to

exactly at

head,

into

down

make

the

head,

from

the

needle

adjustment.

disc by

until

and

heel

sure

the

specified

comes

receptacle.

of

the

the

5

ADJUSTMENT

5.1

General

Since the sewing machine

DY-359-BZ

is a version of the standard single-needle lockstitch

machine and equipped with thread trimmer, the construction does not differfrom the standard

one except for the thread trimmer system and therefore description in this Manual is mainly

concerned

5.2

Thread

5.2.1

Fixed

knife

Thread

Fixed

with

Trimmer

Construction

bracket

guide

knife

the

unit

® ^

thread

Mechanism

trimmer.

Knife

Thread

base

unit
trimmer

cam

Thread

trimmer

solenoid

Sr

Movable

5.2.2

knife

Instruction

(left)

Driving crank Cam follower crank

Knife

driving

shaft

Cam

follower

crank

Flexible

Thread

Stopper

2

trimmer

wire

so

enoid

unit

The

thread

damaged

adjustment

follower
The

solenoid

(down

5.2.3

5.2.3.1

Fit

the

trimmer

drive

by making contact with

with

the

thread

crank2engaged

must

only be

position

Installing

Knife

knife

base

base

to

the

up

knife

unit

unit

position).

usesahook

the

trimmer

with

the

settothe

base

and

to

the

hook

fixed

bushing (left) and tighten the screws

shown

5.2.3.2

After

the

Fig. 3.

in Fig. 2.

Fixed

removing

unit

and

knife

the

tighten

bracket

bobbin

the

unit

case

screw

holder,

(§)asshown

shaft

needle if

solenoid

thread

operation

knife

shaft

(§)

install

cam

system.

the

set

trimmer

bracket

as

in

Therefore,

the

movable

sewing machine is rotated

to its operation

state

(the roller of

cam).

state

during

normal

thread

units

Knife

Fig. 2

base

Hook

knife will

one

turn during

trimming

unit

shaft

bushing

the

be

cam

cycle

(left)

[Fixed

knife

bracket

unitj

5.2.3.3

Relation

between

fixed

knife

and

movable

knife

cutting

edge

(1) Fig. 4

(2) If

the

fied

broken

the

needle

is

smaller,

(3) To

5.2.4

make

knife

may

Connecting

Connect

shown

located

5.2.5

in Fig. 5. At

Knife

shows

the

standard

dimensionisgreater

(0.3mm)

into

in Fig. 4,

three

after

pieces

trimming.Ifthe

trimming

this

adjustment,

bracket

be

the

as

Driving

unitorthe

adjusted.

knife

shown.

driving

crank

the

base

this

knife

and

time,

shaft

the

fault

fixed

Helical

state.

than
thread

and

may

either

base

driving

the

Cam

the

pulled

dimension

occur.

the

knife

position

and

crank

link

must

follower

spring

\

speci

may

out

fixed

driving

crank

be

of

as

be

crank

1

Cam

(Cutting

Fixed

follower

T

edge)

J I / '

K o

knife

Bg.

crank

2

0.3mm

4

Movable

O

Fig. 5

knife

(1) Fig. 6

(2) First

(3) Fix

(4)

the

shown.

Fix

the stopper to the fitting surface so that the

in

the

shows

pass

the

standard

the

knife driving shaft into

cam follower crank 1 to

axial

direction

without

© ©

Bushing

102mm

setting position.

the

fitting surface of

play.

Knife driving shaft

Fig. 6

the

driving crank.

knife

Stopper

the

knife driving shaft at

the

location

drivingshaft may be rotated smoothly

5.2.6 Installing

(1) Operation stroke of

noid

1)

The

3.7mm.

the

standard

thread

thread

operation

trimmer

2) Adjust the stroke using the nut

solenoid

trimmer

stroke

sole

(§).

unit

Driving

3.7mm

lever

Thread

•*]

trimmer

solenoid

is

Solenoid

1mm

mounting

plate

(2) installing

1) Install

©

shown

2)

After

1mm

lever

stopper

solenoid.

3)

When

state,aclearance

between

2asshown

setting.

mounting

in Fig. 7.

5.2.7

Installing

(1) Align

pulley

the

with

the

unit

the

unit

in Fig. 7.

installation,

clearance

and

cam

nut

{§)

the

solenoid

the

cam

in Fig. 8.

To

adjust,

plateinthe

the

thread

second

the

match

using

follower

the

there

between

screws

should

crank2with

be

the

making contact with

is

activated

of

0.5mmisprovided

follower

Thisisthe

move

timing

cranks1and

standard

the

solenoid

directionofarrow

trimmer

cam

markAon

mark

on

the

(B)

and

about

driving

the

the

in

this

the

arm.

cam

Cam

Cam

follower

follower

follower

crank

crank

crank

i

2

0.5mm

Match

2

Fig. 7

mark

(2)

(3)

Caution

Activate

tate

the

fix

the

with

the

The

standard

and

roller

thread

the

cam

original

Before

tion

of

shown

changed,

per

plate,

adjust
above

the

thread

thread

cam

trimmer

when

roller.

clearance

end

trimmer

follower

position.

operation,

the

cam

in Fig.

e.g.

after

adjust

bolt

(Fig. 6)

adjustment

trimmer

the

cam

is

0.5

to

solenoid

crank

the

follower

10.Ifthis

removing

the

position

before

steps

cam

clockwise,

makes

between

1,0mm

is

deactivated

2

returns

standard

crank

position

taking

(1)

solenoid,

contact

the

after

posi

2

has

the

stop

with

the

the

to

(3).

ro

and

Thread

trimmer

cam

Thread trimmer cam Q5 i.omm

Roller

cam

the

and

to

the

0.6mm

is

Cam

follower

10

crank

2

Knife driving

Fig.

10

0 0

Hook

Roller

shaft

shaft

5.2.8

(1)

Adjusting

Movable

and

knife

fixed

engagement

knife

positions

Movable

knife

7.5mm

Fixed

knife

Fig. 11

(2)

Adjusting

1)

2)

(3)

Adjusting

1)

2) It is

shows

the

Activate

sewing

knife

by

The

standard

to

2.0mm

moved

Adjust

ing

The

dard

make

the

crank

knife

if

contact

position

recommended

gagement

thread,

the

knives.

the

knife

the

solenoid

machine

the

thread

engagement

when

the

longest

stroke

installation

the

knife

engagement

the

movable

with

shown

pressure

etc.

dulls

standard

state.

engagement

and

to

turn

the

trimmer

stroke

the

movable

distance.

by

changing

position.

engagement

pressureisstan

knife

the

fixed

in Fig. 13.

to

increase

a little if a thick

the

cutting

stroke

rotate

the

movable

cam.

is 1.5

knife

has

the

driv

pressure

begins

knifeatthe

the

en

edges

to

of

Driving

crank

Fig.

1.5to2.0mm

7

Movable knife Fig. 12

Movable

Fixed

knife

knife

Rg.

3mm

13

11

Fixed

knife

3) To

adjust

the

pressure,

loosen

nut d) and turn the adjust screw ®.

5.2.9 Adjusting

(1) Make

of

when

vated.

(2)

To adjust, loosen the nut ® and move the

flexible

Caution

adjustment

the

tension

the

If

the

enough,
and

the

the

needle.Ifthe

wide.Itremains

ness

of

the

thread

wire.

tension

the

needle

thread

stitches

needle thread loosening length

so

that

the

tension

complete

trimmer

disc

may

opened

will

opens

Is

about

solenoid

not

opened

threadIscut

be

pulled

discIsopened

and

the

be

Inappropriate.

out

the

is

short

too

tight

lock

disc

1mm

acti

of

Thread

Fig.

trimmer

.

1mm

14

solenoid

Flexible

wire

11

5.3.

Adjusting

5.3.1

Adjust

dle

thread

® for pretension.

the

the

Needle

remaining

using

the

Thread

Remaining

lengthofthe

tension

adjust

Length

nee

nut

Clockwise

Counterclockwise

turn

reduces

turn

the

remaining

increase

the

length.

remaining

length.

5.4.

Precaution

Adjust
that

twisted.

checking

the

the

solenoid

Tighten

that

smoothly

5.5.

Aligning

(1)

Make

centerisaligned
bobbin

lowered

for

solenoid

plunger

the

the

stitch

up

and

down.

the

Needle

adjustment

case

holder

to

the

Solenoid

position

and

installation

control

and

until

the

with

the

when

bottom

Installation

side

link

may

screws
lever

Hook

needle

inner

the

needle

position.

to

side

not

after

moves

socket

faceofthe

® is

(2) Make adjustment until the bayonet pointd)

of

the

hook

is

when

bottom

located

the

needle®rises

position.

at

the

2.4mm

(Standard)

needle

center

from

the

so
be

Solenoid

Fig.

Fig.

16

15

Stitch

control

2.4mm

lever

^

5.6.

(1)

Hook,

Use
hook

the

which

Bobbin

thread

Case

has

trimmer

a

bobbin

sewing

thread

groove ® in the bobbin case holder.

(2) Use

the

bobbin

at

the

bottom

idling.

When

sion

little

adjusting

withoutabobbin,

lower

single-needle

machine

idling

sidered.

because

prevention

than

case

to

the

lock

which has a spring ®

prevent

that

the

spring

bobbin

set

for

stitch

pressure

should

the

thread

the

the

machine

bobbin

tension

normal

sewing

of

be

ten

the

con

guide

from

a

Rg.

Fig. 18

Fig. 19

17

12

0

TROUBLESHOOTING

Thread
trimmed.

Needle

pulled

needle

sewing.

Fault

out

at

Is

thread

start

Corresponding

Section

5.2.2.8

5.2.2.8

4.3

5.2,2.9

5.2.2.3

5.2.2.7

not

Knife

proper.

Knife

Is

Movable

edgeIsdamaged

Sewing

of

Sewing

tion

Fixed knife

proper.

Movable

quickly

engagement

engagement

too

low.

machine

the

required

varies

Cause

and/or

machine

greatly.

position

knife

to

pressure

fixed

or

stops

position.

stop

moves

allow

Is Im

knife

worn.

ahead

posi

Is Im

too

loop

Adjust

Adjust

Change

Adjust

1.

Check

cutting.

2.

Check

diameter,

Adjust

Adjust

engagement

engagement

the

corresponding

stop

position.

the

needle

table

specifications

control

fixed knife

thread

trimmer

Measures

stroke.

pressure.

thread

boxGswitch

position.

knife (knives).

releaseatthread

(motor

cam

Installation.

pulley

ON).

spreading.

Is

the

Needle

does

of

ming.

of

ThreadIstrimmed

thread

not

openatthread

tension

too

trim

early.

disc

Adjust

Adjust

tion.

needle

thread

thread

trimmer

release.

cam

Installation

posi

5.2.2.9

5.2.2.7

Stitches

skip

startofsewing.

Needle

too

long

thread

after

ming.

trim

Thread

fixed

able

knife

the

fixed

Needle

paredtothe

PretensionIstoo

at

Bobbin

duetothe
thread

Bobbin

high.

Lengthofneedle

mainingatthe

short

Is

Pretension

Thread

ThreadIsnot

riately
holder

hook.

Is

trimmed

knife

before

edge

knife.

Is

too

thread

trimming.

thread

after

thread

Is

Is

trimmed

outofthe

position

the

engages

thick

thread.

high.

Is

too

bobbin

tension

thread

needleIstoo

trimming.

too

low.

pulled

bobbin

bracketInthe

by

move-

as

Idling

Is

late.

approp

the

with

com

short

case

too

Adjust

fixed

knife

position.

Select

appropriate

Adjust

Use

tion

at

Adjust

1.

re

2.

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MITSUBISHI

HEADOFFICE:MITSUBISHI OENKISLOG MARUNOUCKITOKYO100TELEX:

NAGOYAWORKS :

ELECTRIC

1-14

. YADA-MINAMI5 , HIGASHI-KU . NAGOYA. JAPAN

CORPORATION

J24S32

CABLEMELCOTOKYO