HIGHLEAD GC0518-MC Bedienungsanleitung

HIGH

LEAD

Purchasing

Dept

Copy

GC0518-MC/GC0518-MC-D

High Speed Needle

Bar

Feed Lockstitcher With Edge

Cutter

And

Automatic

Thread

Trimmer

Instruction Manual

Parts

Catalog

SHANGHAI

HUIGONG

N0.3

SEWING

MACHINE

FACTORY

From the library of: Superior Sewing Machine & Supply LLC

CONTENTS

PRECAUTIONS

BEFORE

STARTING

OPERATION

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

MAIN

SPECIFICATIONS

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

INSTALLING

THE

BELT..

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

ADJUSTMENT

NEEDLE

BAR

STOP

POSITION

.........

LUBRICATION

CONDITION

OIL

LUBRICATION

ADJUSTMENT..

ADJUSTMENT

OIL

PUMP

.....

REGULAR

CLEANING

..........

WINDING

ADJUSTMENT

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

REPLACE

NEEDLES

....

12.

THREADING

13.

SET

STITCH

LENGTH

AND

REVERSE

FEEDING

ADJUSTING

THE

THREAD

TENSION

15.

UPPER

THREAD

TENSION

16.

LOWER

THREAD

TENSION

17.

ADJUSTMENT

FEED

DOG

INCLINATION

18.

ADJUSTMENT

THREAD

TRIMMER

MECHANISM

19.

INSTALLING

THE

NEDDLE

PLATE .

20.

CLOTH

CUTTING

KNIFE

THROAT PLATE

COVER.

22.

OTHER

REPLACEMENT

PARTS..

-]-

.........

.......

. 3

.......

........

.........

........

......

.........

.......

.........

..........

. ... 7

.........

....

......

.........

.......

From the library of: Superior Sewing Machine & Supply LLC

PRECAUTIONS

BEFORE

STARTING

OPERATION

Safety Precautions:

(

When turning the

power

on, keep your hands and fingers away from the area around/under the needle

and the area around the balance wheel.

(2) Power must

turned

off

when the machine

not in use, or when the operator leaves the

seat

(3) Power must

turned

off

when tilting the machine head, installing or removing the

"V"

belt, adjusting

the machine, or when replacing.

(4) Avoid placing fingers, hairs,

bars

etc., near the balance wheel,

"V"

belt, bobbin winder balance wheel,

or motor when the machine

in operation.

(5) Do not insert fingers into the thread take-up cover, under/around the needle, or balance wheel

when

the

machine

in operation.

(6)

a belt cover, finger guard, eye guard are installed, do

not

operate the machine without these safety

devices.

Precautions before Starting Operation:

(1) 1f the machine's oil

pan

has an oil sump, never operate the machine before filling

it.

(2)

the machine

lubricated

a drop oiler, never operate the machine before lubricating.

(3) When a new sewing machine is first turned on, verify the rotational direction

the balance wheel with

the power

on.

(The balance wheel should rotate counter-clockwise when viewed from the balance

wheel)

(4) Verify the voltage and (single or three) phase with those given on the machine nameplate.

3) Precautions for Operating Conditions:

(

Avoid using the machine

abnormally high temperature (

or higher) or low temperature (5

]0\ver)

(2) Avoid using the machine in dusty conditions.

2. MAIN SPECIFICATIONS

Item GC0518-MC-D GC0518-MC

Material Light-Mediw11 heavy

Max.sewing speed 4500 rpm

Stitch length

0-4111111

Needle bar stroke 31.8nun

By hand 4nun

Presser By knee

lOnm1

Needle

DPX1#14

Lubrication Auto lubricated

Auto trinnner 0 -

Auto backtracking 0 -

Rotating hook Auto lubrication hook

(Thread trinuning) Auto lubrication hook

Motor Speed adj. Motor 370W clutch motor

-2-

From the library of: Superior Sewing Machine & Supply LLC

3. INSTALLING

THE

BELT

(Fig.l)

Use a V-belt for

sewing

machine use, type M

adjust the

belt

tension,

change

the motor

height

turning the tension

adjust

nuts so that the

belt sinks about

nm1

when

depressed

hand at

the center

the belt span.

the tension

too low,

the speed may not

consistent in the low or

medium

range, or the

needle

may

not

stop in the

proper position.

the tension is too high, the motor

bearings will deteriorate

rapidly.

4. ADJUSTMENT

NEEDLE

BAR STOP POSITION (Fig. 2, 3)

1) Adjusting

of"

Up" position

When the pedal is

kicked

down

heel, the

machine stops at

"UP"

position.

the marks

deviate larger than 3 mm adjust as follows

(l)

Disconnect the

plug

(12 pins)

cable

fTom

the machine head

(2) Run the

machine

and

stop

"UP"

position.

(3)

While holding the

balance

wheel insert

the ''adjusting tool''

the hole

then

remove the tool.

2) Adjusting

"DOWN" position

Set the machine stops

"DOWN"

position.

When the pedal

kicked

down

hell. the

machine stops

"DOWN"

position

the marks

deviate larger than 3

111111

adjust as follows

(I)

Disconnect the

plug

(

pins)

cable

from the machine head.

(2) Run the

machine

and

stop

"DOWN"

position.

(3) While holding the balance wheel insert

the "adjusting tool"

the hole

then remove the tool

Adjusting tool

_3rd

mark

\ Rotating

direction

.---

mark

3) Confirm the stop operation then the plug

2 pins) coming from the machine head into

the receptacle.

-3-

From the library of: Superior Sewing Machine & Supply LLC

LUBRICATION (Fig.4)

Pour oil up to position A

the oil tank.

During operation, check the oil level periodically,

and in cases where the oil level

below position B

replenish the oil supply up to position

Use white spindle oil.

CONDITION

OIL

LUBRICATION

(Fig.S)

While operating the machine, check the

condition

oil lubrication through the oil check

window.

LUBRICATION

ADJUSTMENT

(Fig.6)

Adjusting the lubrication

rotating hook.

Oil adjusting screw (A) can adjust the

lubrication

the rotating hook as follows:

(

Tum oil adjusting screw (A) clockwise to

increase oil and

tum

oil adjusting screw (A)

counter-clockwise

decrease oil.

(2) Oil adjusting screw (A) adjusts oil amount

within 5 turns When oil adjusting screw (A)

fully

tightened. oil amount

maximum.

(3) Readjustment depends

temperature.

sewing speed and the like. In practice, oil amount

can

judged

as follows: remove the throat plate

and

place a piece

paper on instead,

run

the machine for

about 20 seconds. then check the oil splashed on the

paper

ADJUSTMENT

OIL

PUMP

(Fig.7)

The standard adjustment

as follows The

Jdjusting plate keeps the bypass hole fully closed. To

decrease

spbshing.

open the bypass hole

appropriately

-4-

I check

window

----------~-----~

l-Jf

A 6

From the library of: Superior Sewing Machine & Supply LLC

REGULAR

CLEANING

(Fig.S)

I) Cleaning feed dog

Remove the throat plate and clear offthe dust and lint between feed dog tooth slots.

Cleaning rotating hook

Swing out the machine head and clean

the

hook. Wipe the bobbin case with soft cloth.

Cleaning oil

pump,

screen

Swing out the machine head and clear offthe dust and dirt on oil

plll11p

screen.

Feed dog

10.

WINDING

ADJUSTMENT

(Fig.9)

A----,

B---__,

I) The wound bobbin thread should be Peat and tight.

not.

adjust the winding tension by turning tension

stud

nut

(A)

ofbobbin winder tension bracket.

Note: nylon or pol.r:;ter thread should be wound with little tension; otherwise. bobbin (D) might break or

defom1.

vn;.

·1

o vound thread layer does not present a cylindrical shape

shown

Fig 9 (a). loosen set screw

(1:5)

bobbin winder tension bracket and slide bracket

(C)

leftward or rightward. If thread

wound

shown

Fig 9 (b). move the bracket rightward, but

thread

\\Ound

shmvn

Fig 9 (c). move the bracket leftward.

After adequately positioning the bracket. tighten set

screw (B)

not

overfill the boubin. The optimum length

thread

\Viii

fill

about

80'%

bobbin capacity This

can

adjusted by adjusting screw (E)

bobbin winder stop

latch

11.

REPLACE

EEOLES

(Fig.10)

Turn the balance wheel

lift needle bar

the upper

-s-

From the library of: Superior Sewing Machine & Supply LLC

end

1ts

stroke Loosen needle clamp screw (A). While keeping the long groove

the needle leftw·ard fully

insert the needle shank

to the bottom

the needle socket. Then tighten needle clamp

scre'v\

(A)

Note Fig (b): insu!llcient insertion.

Fig (c) wrong direction

long groove

12.

THREADING

(Fig.ll)

thread the needle tlu·ead, raise needle

bar

to the upper end

its stroke, lead the thread from spool and

perform threading as shown

Fig.3.

draw the bobbin thread, hold the end

the needle thread and turn the

balance wheel to lower the needle

bar

and then to lift it to its highest position. Pull the needle thread and the

bobbin thread is drawn

up.

Put the ends

needle thread and bobbin thread front\vard under presser foot.

'"~

-~~-----·~Reverse

lever

Stitch

len~,~~-

adj

ust

ing

Ji~l

13.

SET STITCH LENGTH AND REVERSE FEEDING (Fig.12)

change the stitch length, rotate the stitch length adjusting dial while pressing the push lever.

Press

1ng

the reYcrse lc\

to rc\ crsc stitching.

The button switch can be pressed to perl'orm reverse stitching.

Normally, set the button switch as illustrated

the solid lines. To reverse stitching, press the button

S\Yitch

14.

AD.JUSTING THE

THREAD

TENSION

(Fig.l3)

0 X X

Wei

balanced

The

upper

thread

The upper

thread

st1tch

too

tight

lower

too

loose

lower

thread

too

oose

thread

too

tight

-6-

From the library of: Superior Sewing Machine & Supply LLC

15.

UPPER

THREAD

TENSION

(Fig.14)

The

upper

thread

can

adjusted

based

the

10\ver thread tension.

Adjustment

can

done

rotating

the thread

tension

nut

For special fabric

sewing

with

special thread,

the desired tension can

obtained

adjusting the

strength and operating range

thread take-up spring.

16.

LOWER

THREAD

TENSION

(Fig.15)

The

lower thread

tension

can

adjusted

rotating screw A

•

Thread

tension

nut

~UHl~IA.~

//~/

ADJUSTMENT

FEED

DOG

INCLINATION

(Fig.16)

The

feed

dog

has

been

set

standard

(horizontally)

necessary,

adjust

the inclination

according

the material to

sewn as follows:

Sllghtly loosen

screw

located

in the feed

rock shaft crank

Usmg

scre\\driver

While pressing the

groove

located

the

eccentric

shaft

using

a screwdriver. rotate the eccentric shaft

clockwise (to lift the front end) or

counter-clockwise (to lower the

rear

end).

3) When adjustment

completed.

tighten screw

-7-

Pos1tion of rnark on

the

eccentnc

shaft

aB-

Honzontal

[)'

[),

Down

Feed dog

t'NN,U,

Standard

Front up

(MAX)

J:i.!~'J

Front

down

(MAX)

From the library of: Superior Sewing Machine & Supply LLC

18.

ADJUSTI\1ENT

THREAD

TRIMMER

J\;1ECHANISM

Thread trimmer mechanism as shown

Fig.l7

Operation stroke

the thread tri1mner solenoid

(I)

Standard operation stroke is

(2) This stroke can be adjusted by using nut A

IFIXed

blade

bracket

un11/

Twrs1

spnng

1 Thread

trnl1rner

solenotd

ur1d

Thcead

gu1cle

hxerl

hi;:Hie "'-,

·,

Kn1fe base un1t I

/ I

Collar

Flexible

wtre

Movable

knde

\left)

Knde

drtvlng

Krn1e cinvrng

cr<Jnk

Shed!

"...TWISt

spnng

',.

Stopper

C:am

follower

crank

(;:tl11

follower

Dr~ve

lever

Stopper

plate

crank

(21

AdJustment

knife engagement

(fig

(I)

Position

able knife (left) nnd fixed blade.

Sec the illustration. The standard distances from

the needle

center

are 6.5 nnn and 3.3 mm from

the

movable

knife (left) and fixed blade

respective!~.

(2) Adjustment

knife

engagement

With the

solenoid activated, turn on the machine. This

rotates the thread trimming

cam\\

hich rotates the

movable knife (left).

When

the movable knife

(left) has

moved

to its farthest distance, the

standard engagement

the blade

1.5-2 0 mm.

(3) Adjustment

knife engaging pressure.

thread

poorly cuL pmiicularly

when

thick,

slighth

increase the engaging pressure. This

should

soh

c the problem

The

engaging pressure

can be adjusted in this \\ay: Loosen lock nut

and adjust

b\ using adjusting sere\\

-8-

5-2.0mrn

Movable

knife

(left)

Movable

knife

(left)

3mm

Fixed

blade

Fixed blade

From the library of: Superior Sewing Machine & Supply LLC

19. INSTALLING

THE

NEDDLE

PLATE (Fig.19)

attach the

needle

plate,

bring

the cloth-cutting knife to

its

lowest

position,

and

gradually tighten the two

set screws alternately while lightly

pressing

the needle plate onto the cloth-cutting knife.

20. CLOTH

CUTTING

KNIFE (Fig.20, 21)

Operation

the cloth cutting knife

(I)

To actuate the

cloth-cutting

knife, press

down knife setting plate

(2)

stop the cloth-cutting knife and reset the

machine

to the normal lockstitching mode,

pull knob 2

the direction

the arrow·

2) Attaching the cloth cutting knife

(I)

Raise

lower

the cloth-cutting knife so that

section A

the

cloth-cutting

knife

positioned

0-0.5

below

the top face

the

needle

plate

when the knife

in its

lowest position.

(2)

Loosen two knife set screws I. and replace

the cloth-cutting knife.

3) Changing the cutting width

(I)

The

needle

plate

decides the cutting width.

When the needle plate

replaced. loosen

knife

guiding

shaft

set

screw

I so that proper

'-------------~-----------~~---------------

parallelism

obtained and the sharpness

the knife blade

increased as shown

the ligure

(2) When the position

ofthe

knife

changed

accordance with the

change

the needle plate size.

loosen

set

screw

and position the knife so that the blade

the

needle

platt

comes

contact

with the knife blade. Then tighten

set

screw

(3) For the standard machine. a 3 2

wide needle plate

installed

the time

delivery

21. THROAT PLATE

COVER

I) When the

cloth-cuning

knife

not in use.

fit

the throat plate cover. which

provided as an accessory.

-9-

From the library of: Superior Sewing Machine & Supply LLC

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