Consew 7360ra tcwl (e) User manual

MODEL

7360RA

TCWL

(E)

PARTS

&

INSTRUCTION

MANUAL

CONTENTS

Instruction manual

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

1-13

Parts catalogue

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

19-34

Arm and bed mechanism

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

19-20

Arm

shaft, vertical

shaft

and

thread

take-up

mechanism

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

21-22

Feeding, feed lifting

and

rotating hook mechanism

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

23-24

Stitch length regulating mechanism

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

25-26

Presser foot mechanism

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

27-28

Knife

actuating

mechanism

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

29-30

Reverse sewing

and

detector mechanism

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

31

Wiper mechanism

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

32

Oil pump mechanism

.......

0.0

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

33

Oil reservoir and accessories

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

11

...........

34

Before

putting

a new machine into operation, remove

the

plugs (A) on

the

top

of

the

arm

and

replenish

the

oil

supply. Lift

the

presser foot

and

run

the

machine

at

a low speed

of

2000

spm

to check

that

the

oil is being

distributed

correctly

by

inspecting

the

window on

the

oil reservoir.

When

lubrication is normal, keep

the

machine

running

at

this speed

for

30 minutes,

and

then

increase

the

running

speed gradually. After a

month

of

running,

the

machine

can

be

run

at

maximum speed assuming

normal

working

conditions.

Fig.!

FILLING THE

OIL

RESERVOIR

The

amount

of

oil in the

reservoir

is controlled

through

the

reference

marks

A

and

B shown in Fig 2. A

indicates

the

maximum oil level,

the

mark

B is the minimum oil level.

If

the

oil level is below

the

mark

B refill

the

oil reservoir.

When

filling

the

reservoir, loosen

the

oil draining screw (c),

drain

offthe

remaining

oil reservoir completely,

clean

the

reservoir

and

re-tighten

the

oil draining screw (c)

and

fill

the

oil reservoir

with

fresh sewing machine

oil.

Fig. 2

REGULATING

OIL

DISTRIBUTION ON THE ROTATING

HOOK

Adjust

the

amount

ofoil used to

lubricate

the

rotating

hook

by

turning

the

oil flow adjusting screw (A).

Tnrn

the

screw (A) clockwise (in

the

direction of

the

+ sign) to increase

the

oil flow;

turn

it counter-clockwise

(in

the

direction

ofthe

-sign) to decrease

the

oil flow.

Fig. 3

1

OIL

PUMP ADJUSTMENT

During

everyday operation, adjusting the oil

pump

is not usually necessary.

If

the oil level

doesn't

fluctuate

in

the oil reservoirwindow when the machine

runs

at

a low speed, close the clearance on the oil bypass hole.

Adjusting. plate

fif.

'it

iii]

flJll

O.5-1.0mm

standard

clearance

95'n:iillIl

Bypass Oil hole

Fig. 4

NEEDLE INSTALLATION

Turn

the

balance wheel to lift the needle

bar

to the

upper

end

of

its stroke. Loosen the needle clamp screw

while keeping

the

long groove

of

the needle facing left; insert the needle

shank

up

to the bottom

of

the needle

socket, then tighten the needle clamp screw.

Fig. 5

CONNECTING

THE

CLUTCH

LEVER

TO

THE

PEDAL

The

optimum tilt angle

of

the pedal

is

approximately 15 degrees.

Adjust

the

clutch

so

that

the clutch lever (c) aligns

with

the

draw

bar

(8)

as shown

in

Fig. 6. The machine pulley should rotate

counter

clockwise when viewed from the outside

of

it.

The

rotating

direction

of

motor

pulley can be reversed by

turning

the

plug

of

the

motor

180 degrees.

Adjust the tension ofO-Belt (F) by moving

the

motor

up

and

down; the

proper

tension

on

the

O-beIt

is

a slack

oflO-20

mm

when

the belt

is

depressed

at

the center

ofthe

belt.

Fig. 6

2

BELT

COVER

INSTALLATION

Install

the

belt cover

for

the

sake

of

safety. Install

belt

cover (C)

to

arm

with

screw (A)

and

screw (B) ,

and

install

belt cover (E) onto

table

with

screw (D).

Fig. 7

ADJUSTING

THE

TIMING

OF

THE TENSION DISCS

Within

the

presser

foot lift

range,

the

timing

of

the tension discs

can

be

adjusted as follows:

Remove

the

rubber

plug

from

the

back

of

the

arm

and

loosen

the

screw (A)

ofthe

knee lift lever (left).

Move

the

tension releasing

cam

(D) to the left for

earlier

opening

or

to

the

right

for

later

opening.

It

will facilitate

the

adjustment

if

a blockis

put

under

the

presser

foot lift.

~-e

..-

Fig. 8

THREADING

To

thread

the

needle,

raise

the

needle

bar

to the

upper

end

of

its stroke.

Lead

the

thread

from

the

spool

and

follow

the

progression as

shown

in

Fig.

9.

To

draw

the

bobbin

thread,

hold

the

end

of

the

needle

thread

and

turn

the

balance wheel to lower

the

needle

bar

and

then

lift

it

to its highest position.

Pull

the

ends

of

needle

thread

and

bobbin

thread

toward

the

front

and

under

the

presser

foot.

3

Fig. 9

BOBBIN WINDER INSTALLATION AND ADJUSTMENT

The

bobbin

winder

pulley

should

aligu

with

the

V belt

and

there

should

be

some clearance between

them.

When

the

bobbin

winder

stop

latch

lever is depressed,

the

V belt

should

be

in

contact

with

the

bobbin

winder

pulley

so

that

the

bobbin

winder

pulley

can

be driven by

the

V belt.

The

thread

on

the

bobbin

should

be

uniform

and

tight.

If

not,

turn

the

tension

stud

nut

(A)

on

the

bobbin

winder

tension

bracket

to

adjust

the

tension.

First,

loosen

the

set

screw (B) on

the

bobbin

winder

tension

bracket

and

move

the

bracket

(C)

either

left

or

right

as needed.

For

instance,

if

the

thread

is

wound

as

illustrated

by

figure (b), move

the

bracket

left.

If

it

is

wound

as

in

figure (c) move

it

right. After

adjusting

the

tension

make

sure

to tighten

set

screw (B).

Don

not

overfill

the

bobbin,

figure

(d).

For

best results, fill to

about

80%

capacity.

This

can

be

adjusted

by

using

screw (E).

~

I

a b d

Fig. 10

ADJUSTING

THE

PRESSURE ON

THE

PRESSER

FOOT

Adjusting

the

pressure

on

the

presser

foot is dependent

upon

the

thickness

of

the

material

being sewn.

First,

loosen lock

nut

(A).

For

heavy materials

turn

the

pressure

regulating

thumb

screw

in

the

direction

indicated

in

Fig.

11

(a) to increase

the

pressure.

For

light materials

turn

the

thumb

screw

in

the

opposite

direction as shown in Fig.

11

(b) to decrease

the

pressure. Once

the

appropriate

pressure

has

been

set

tighten lock

nut

(A).

a

Fig.ll

b

•

THREAD TENSION ADJUSTMENT

Thread

tension shonld

be

determined in

tandem

with

the

stitch obtained

by

adjusting

the

tension

on

the

bobbin

thread

and

the

needle tension Fig. 12. The tension

of

the

bobbin

thread

should

be

adjusted

by

turning

the

tension

spring

regulating screw on the bobbin case.

Once

it

is adjusted,

insert

the

bobbin

into

the

bobbin

case

and

hold

the

end

of

the

thread

from

the

case

and

let it hang.

If

the

bobbin rotates slowly

downward

the

tension is correct.

The

tension on

the

needle

thread

is

adjusted

by

turning

the

thumb

nut.

l-gIlI-Fig. 12

13

Fig. 13

Normal

stitch form

_

..

Needle thread

~I§@ll§@l,@'l~

..

Bobbin thread

Fig. 14

5

The

stroke

of

the

thread

take-up

spriug

runs

from

8mm

to

10mm.

When

sewing very thin fabrics,

reduce

the

thread

take-up

spring

tension

and

increase tbe

thread

take-up

spring

stroke. Conversely increase

the

thread

take-up

spring tension

and

reduce

the

thread

take-up

stroke

when

sewing

very

thick

fabrics.

To

adjust

the

thread

take-up

spring

tension: (Fig. 13),

first

loosen

the

set

screw (A)

then

turn

the

tension

stud

(B)

counter

clockwise to

decrease

the

tension

of

the

thread

take-up

spring

( C ) to zero.

then

turn

the

tension

stud

(B) clockwise till

the

spring

(C) comes to the notch

of

the

tension

regulating

bushing,

and

again

turn

the

tension

stud

(B) halfway

back

(counter

clockwise ),

After

tbe

adjustment,

tighten

the

set screw (A).

Adjusting

the

thread

take-up

spring

stroke: (Fig. 14) loosen

the

set

screw (B)

turn

the

stud

(C) clockwise to

increase

the

stroke

or

turn

stud

(C)

counter

clockwise to decrease

the

stroke.

After

making

the

adjustment,

tighten

set screw (B).

SYNCHRONIZATION

OF

THE

NEEDLE

WITH

THE

ROTATING

HOOK

When

the needle

bar

is

raised

from

its lowest position

the

gap

should

equal

that

illustrated

by

(A)

in

Fig. 15.

The

hook

point

(D, Fig. 16)

ofthe

bobbin

should align

with

the

center

line

ofthe

needle

and

be

1- 1.5

mm

above

upper

end

of

the

needle eye (Fig 15).

1.0-1.5.

Fig. IS

Fig. 16

The

clearance between

the

bottom

of

the needle notch

and

the

hook

point

should be approximately

0.05

mm

(Fig. 16).

6

ADJUSTING STITCH

LENGTH

AND REVERSE FEEDING

The

stitch length

can

be

adjusted

by

turning

dial (A).

The

figures

on

the

face (B)

ofthe

dial show

the

stitch

length

in

mm.

The

reverse feed

lever

must

be

depressed while

adjusting

the

stitch length. Reverse feeding

starts

when

the

reverse feed lever (c) is depressed, the machine will feed

forward

again

when

the

reverse feed

lever is released.

Fig. 17

ADJUSTING

THE

POSITION

OF

THE

FEED

DOG

AND NEEDLE

Turn

the

balance

wheel to lower

the

Feed

Dog (A).

When

the

top

of

the

feed

dog

is flush

with

the

Throat

Plate

Surface

(B),

the

Needle

Point

(C)

should

be

3mm

below

the

surface

ofthe

throat

plate.

The

adjustment

should

be

made

by

adjusting

the

position

ofthe

feed cam

and

feed lift

cam

(Fig. 19).

Fig.

18

Standard

position is shown

in

Fig. 19.

For

the

third

screw (A)

of

feed

cam

and

the

second screw ( B )

of

feed lift

cam

to

Arm

Shaft

Oil Hole (C) is

set

to

the

direction

of

the

balance

wheel

turning.

Fig. 19

10

STITCH

LENGTH ADJUSTMENT

Loosen

Screw (A) to

adjust

Stitch

Length

Adjusting

Cam

(B).

Turn

it

to

the

right

to

narrow

the

stitch length

for

forward

stitches,

and

widen

it

for

reverse;

turn

it

left to widen

the

stitch

length

for

forward

stitches,

and

narrow

it

for

reverse.

Fig. 20

FEED

DOG HORIZONTAL ADJUSTMENT

Lift

the

front

of

the feed

dog

to

prevent

the

fabric

from

puckering.

Lower

the

front

of

the

feed dog to

prevent

the

fabric

from

tearing

or

the

bobbin

thread

breaking.

Mark positipn

on

Feed dog

eccentric shaft

+

-""''''''''''

..

'Standard

@ Level

d'\

......

~

The front

up

W

.....

Above the

max.

ffi..JIL.U

d

~

The front down

~

.......

n

er

the

max.

Fig.

21

THREAD CUTTING MECHANISM

The

thread

cutting

mechanism

adapts

the

hook

shaft

cam

driving

for

thread

cutting.

If

thread

cutting

electromagnet

works,

and

after

it

f'mishes

trimming

the

thread,

reset

thread

cutting

cam

crank

at

once,

otherwise this

may

cause

the

movable

knife

and

needle to collide

and

damage

them.

KEY

FOR

Fig. 22

A

-fixed

knife support 8sm.

C

-thread

cutting cam.

E -

soh

thread.

G

-stopper.

J

-cutter

driving shaft.

L - knife{leftL

N - thread retainer.

Fig, 22

B - knife support

a5m.

(left)

o-thread cutting electromagnet.

F - electromagnet a5m

H.

I - thread cutting cam crank.

K - cutter driving

crank.

M

-fixed

knife.

11

KNIFE SUPPORT ASM (left)

Insert

the left knife

support

assembly (B) into

Hook

Shaft

Bushing (C) as

the

figure shows

and

then

tighten

screw (A).

Fig. 23

FIXED

KNIFE

SUPPORT ASSEMBLY

Remove the

hook

positioner

and

then

set

it

with

screw (A) shown in Fig 24 (B)-fixed knife

support

assembly.

Fig. 24

POSITION

OF

THE

FIXED

KNIFE

AND

LEFT

KNIFE

POINT

(1)

The

standard

position is shown

in

figure 24.

If

the

size is

larger

than

the

standard,

the

knife will

either

cut

the

3

threads

or

draw

the

thread

out

of

the

needle eye;

if

smaller,

it

will

cause damage, so be

sure

to avoid

that.

If

any

of

the

above mentioned situations occur,

adjust

by

setting

the

{'lXed

knife

support

or

the

{'lXed

knife (B).

.!+o.3mm

A)--hG!

; ,

"

l:

oj

-

(e

_I

Fig. 25

o

A-the blade C-the knife (left)

12

CONNECTING

THE

KNIFE SUPPORTAND CUTTERDRIVING CRANK

Connect

them

as

figure

26 shows

and

notice

the

position

of

Cutter

Link

Lever

(A).

11l11=---IA

Fig. 26

POSITIONING

THE

CUTTERDRIVING SHAFT

The

Standard

position is

shown

in

figure 27.

When

assembled,

the

Cutter

Driving

Shaft

(G) should first

be

put

in

Cutter

Driving

Crank

(A).

Set

Thread

Cutting

Cam

Crank

1 (D)

on

the

cutter

driving

shaft

by

referring

to

the

standard

position.

Set

Stopper

(F),

make

sure

that

there

is no clearance

between

parts

around

the

cutter

driving

shaft,

and

rotate

evenly. -,

a

Fig. 27 B-spring end cover C-spring

E-thread

cutting cam

crank

2

THE

ELECTROMAGNET CORE STROKE

The

standard

stroke

of

the

electromagnet core is

6mm.

The

stroke

can

be

adjusted

with

Positioning

screw (A).

6mm+

d.L-JIf"-----\c

O.Smm

1mm

Fig. 28

B-thread cutting electromagnet holder

C-thread cutting cam

crank

2

D-driving

bar

E-thread cutting electromagnet

The

installation

parameters

are

shown

in

Fig. 28. 13

INSTALLING

THE

THREAD CUTTING CAM

Align balance wheel

machine

arm

No.2

Positioning

Mark

(A)

with

Positioning

Mark

(B)

on

the

machine

arm

as

shown

in

Fig. 29.

Fig. 29

As

the

thread

cutting

electromagnet

runs,

the

Thread

Cutting

Cam

(A)

rotates

in

the

normal

direction.

Fix

the

cam

when

Cam

(A) is engaged

with

Roller (B).

Fig. 30

To

stop

operating

the

electromagnet, reset

Cam

Driving

Crank

(A),

Cam

(B) is

separated

from

engaging

with

the

roller,

the

standard

clearance

is

O.

5- 1 mm.

--------'@

I~=::;:H

-'------{A

•

Fig.

31

Note: figure 32 shows

the

standard

position

of

Cam

Driving

Crank

(D) before operation.

2mm~,*

6-®

@-_._./Ol

©-

/ I

C .

\ )

foL-----"'---

r"

~'-_I

Fig. 32

Key: A-book sbaft B-roller C-cutter driving sbaft

14

It

may

change

the positions mentioned

above

to remove

the

stopper,

then

adjust

with

Screw (A).

and

readjust

following

the

progression

from

Fig. 29-31.

Fig. 33

ADJUSTING KNIFE CUTTING DEPTH

Fig. 34

Key: A-knife (right)

B-cutter

driving sbaft

Adjusting

the

knife

cutting

depth:

When

the

electromagnet is

working,

run

the

machine, the left knife (A) will

follow

the

motion

of

the

thread

cutting

cam.

The

maximum

degree

of

cutting

depth

is 1. 5-2. Omm (B)

for

the fixed knife.

Adjust

the

cutter

driving

crank

if

necessary.

1.S-2.0mm

..

Fig. 35

ADJUSTING THE CUTTING PRESSURE

Figure

36

shows

the

standard

position

that

the

Left Knife (A) begins to

touch

the

Fixed Knife (B).

Fig. 36

15

(2)

When

cuttingheavier

thread,

increase the cutting pressure. To

adjust

the cutting pressure, loosen Set

Nut

(A),

and

adjust

Screw (B).

Fig. 37

ADJUSTING

THE

NEEDLE THREAD TENSION

There

should

be a clearance

of

1

mm

between the two discs while the

thread

cutting electromagnet

(A)

is

working.

To

make an adjustment, loosen

Nut

(B)

and

move soft

thread

(C).

A

(€l

€l

Fig. 38

Note:

If

the

clearance

is

too

narrow,

the

thread

end left

after

cutting is too

short

and

may

be pulled away

from

the

needle eye; otherwise

the

tension will be slack and will effect

the

needle

thread

tension.

1mm

Fig. 39

16

THREAD ENDS ADJUSTMENT

To

get the needle

thread

ends to the

proper

length,

adjust

Nut

(A).

Turn

right to shorten.

Turn

left

to

lengthen.

---

Fig. 40

INSTALLING REVERSE STITCHELECTROMAGNET

Adjust

the position

of

Electromagnet (A) properly to

guarantee

the flexible connection

of

the

magnet to the

link

lever

and

the convenient operation

of

Reverse Stitch

Bar

(B), then set with a screw.

Fig.

41

REVERSE SWITCH

The

figure shows the

normal

position. To reverse stitch, simply slide the switch as indicated

in

Fig. 42. To

resume

normal

sewing, slide the switch

back

to the original position.

Fig.

42

17

THREAD RETAINING DEVICE

Thread

Retainer

Height

The

standard

height is 2

mm

from

the

needle

point

when

the

needle is

at

its highest position.

To

adjust

Thread

Retainer

(B), loosen screw (A).

Fig. 43

When

the

magnet

is electromagnetically engaged,

the

standard

distance between the

thread

retainer

and

the

center

of

the

needle

should

be

0-2

mm.

0-2mm

Fig. 44

To

adjust

its position, loosen Screw (C)

and

Screw (B)

and

then

adjust

the

position

of

Electromagnet

Assembly

(A).

~:I

@--

Fig.4S

HOOK BOBBIN CASE AND BOBBIN

There

is a

thread

groove (A)

in

the

special

hook

for

thread

cutting

sewing machine.

2.

The

bobbin

case used

in

the

machine

should be

equipped

with

a

spring

(B)

in

the bottom, which prevents

the

bobbin

from

running

when

it

is empty.

18

PARTS CATALOGUE

I

,

-,

19

ARM

AND BED MECHANISM

No. Part No. Descril!tion

22T1

-021G3

liH&1Hm

Screw

2 22Tl

-021Gl

tl1&

Slide

plate

3 48Tl

-005

(i:1&!$jf

Leg

4

GB93

-76

~1l!I6

Spring washer 6

5 124Tl -00281

001&

Face

plate

6 124Tl -002B2

OO1&~Jt

Face

plate gasket

7 22Tl -003C3 1M!."

Rubber

plug

8 22Tl -003C4

1M,"

Rubber

plug

9 22Tl -003C5

OO1&~1;]

Thread

guide

on

face

plate

78Tl

-004Cl

00

1&g:,<

1;]

Thread

guide

on

face

plate

10 22Tl -003C6

il1.1;]~n

Screw

11

22Tl

-004

OO!!ii~rr

Screw

12

22Tl -008H

iill~tllj4:

Oil

check

window

13

36T2

-004

:::'JU:'<1;]

Three -hole thread guide

14

36T2

-005

:::'lL%:'<~~m

Screw

15

36T2

-006D1

IH\"~i:1~1&

Pretension

thread

guide

16

36T2

-006D2

IHj,,~~n

Thread tension stud

17

22Tl -009E3

IJ\*~1&

Thread

tension

disc

18

36T2

-006D3

IJ\9i:~lI/..

Tension

spring

for

pretensi®

19

36T2

-006D4

IJ\9i:~~fr):

Thread

tension

nut

20

22T1

-011

IJ\9i:~I§I;E~n

Set

screw

21

22Tl -012F1

*~~n

Thread

tension stud

22

22T1

-012F2

9i:~~fr):

Thread

tension

nut

23

22T1

-012F3

*~lI/..

Thread

tension

spring

48T1

-OO3Al

9i:~lI/..

Thread

tension

spring

24

22T1

-012F4

f~~1&

Thread

tension

releasing

disc

25

22T1

-012F5

*i:'<1&

Thread

tension

disc

26

22T1

-012F6

lMl1..

Thread take -

up

spring

48T1

-OO3A2

tltl:'<.

Thread

take -

up

spring

27

22T1

-012F7

9i:l:'<iIil'P

Hf

Thread

tension

regu!ator

bushing

28 22Tl -012FS

*~iIil'PHf~n

Screw

29 22Tl -012F9

film

Thread

tension

releasing

30 22Tl -012F10

9i:~~fr):J.tM1&

Stop

disc

31

2211

-012Fll

o~[I

o

-type

ring

32 22Tl

-013

~

*~i)lj'PHfI§l;E~n

Set screw

33

22T1

-014

~~

Thread

guide

78Tl

-005

il1.ZJ

Thread

guide

34

22T1

-015

!,\(&"

Rubber

plug

35 22Tl

-016

!,\1;!i"

Rubber

plug

37

36T2

-007

jjt~fHpl\'L

Thread

take

-

up

lever

guard

78T2

-002

jjt~

HlP

l\'L

Thread

take

-up

lever guard

38

22T2

-004

jjt~HlPl\'L~rr

Screw

39

36T2

-008

tt!!ii

(B1.

81

Needle

plate

48Tl

-004

tt1&

Needle

plate

40 22Tl

-020

tt1&~il~T

Screw

41

22Tl -012G2 tl1&.

Slide

plate

spring

20

Consew 7360RA TCWL (E) User manual

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