Highlead GC24628-1 User Manual
Purchasing
Copy
Dept
Post-Bed
HIGH
GC24628-1
Compound
Sewing Machine
LEAD
Split Needle
Bar
Feed
Lockstitch
Instruction
Manual
Parts Catalog
SHANGHAI HUIGONG
N0.3
SEWING MACHINE FACTORY
---
CONTENTS---
Instruction
Manual
Preparation for operation
1, Safety precautions
2,
Precautions
:L Precautions for
• Cautions
1 , Lubrication
2,
Lubrication (2)
3,
Condition
4,
Cautions
•
Or)et·atiort
I , How to attach
2,
How to
:i,
Selection
4,
How to route the
before
operating
on
use
(J)
.........................................
........................................................................
of
oil
lubrication
on
operation
...........................................................................
needle
wind
the
lower
of
Thread
upper
..............................
.....................................................................
starting
operation
conditions
.......................................................
.......................................................
·
................................
......................................................................
..............................................................
..................................................................
...................................................................
thread
...........................................................
....................................................................
thread
............................................................
·
...............................
1
1
1
1
1
1
1
l
2
2
2
2
3
:J
o,
Adjustment
fi,
Setting
7,
Threading
Balance
tL
Y,
Lower thread tens ion
I
0,
Upper thread
11, Adjustment
•1
L,
1
Timing
1:\,
AdjustmentofFeeddogheight
: '
\Valking
I.
, S
1fety
;.,~\:
.
i!.~:,l1
Parb
CaLliog
of
stitch
bobbin
of
between
clutch
<iation
il.)iJS
........................................................................
ofbobbin
thread
tension
of
pressure
rotating
foot
and
device
ofBelt
............................................................................
length
and
reverse
thread
tension
presser
cover
..............................................................
................................................................
...................................................................
..................................................................
of
presser foot
hook
motion
foot
vertiCal
...................................................................
...............................................................
sewing
and
..........................................................
stroke
...............................................
....................................................
needle motion
adjustn1ent
......................................
......................................
4
4
4
4
4
4
:'i
5
5
6
6
7
7
.\,
ARf'vl
BED
AND
ITS
ll,
THREAD
TENSl00-J
ACCESSORIES
REGULATOR
.....................................................
MECHANISM
.........................................
i-l
10
C
ARM
SHAFT MECHANISM
D,
UPPER SHAFT & PRESSER
...........................................................
FOOT
MECHANISM
.........................................
13
15
L TAKE-UP THREAD AND SHAFT MECHANISM
F, STITCH REGULATOR MECHANISM
G,
LOWER
H,
HOOK SADDLE MECHANISM
SHAFT & FEED ROCK SHAFT MECHANISM
L OIL LUBRICATION MECHANISM
J, ACCESSORIES
......................................................................
...................................................
........................................................
.....................................................
..........................................
....................................
18
21
23
26
:JO
:53
II
Preparation for operation:
1.
Safety precautions:
I) When turning the power on, keep your hands and fingers away from
and the area around the pulley.
2)
Power must be turned off when the machine is not in use, or when the operator leaves the seat.
3)
Power must be turned off when tilting the machine head, installing or removing the
the machine, or when replacing.
4)
Avoid placing fingers, hairs, bars etc. near the pulley,
machine is
is
in operation.
devices.
2.
Precautions before
power
3.
Precautions for
in operation.
5)
Do not insert fingers into the thread take-up cover, under/around the needle, or pulley when the machine
If
a belt cover, finger guard, eye guard are installed,
6)
starting
1)
Never operate the machine before filling the machine's oil pan.
2)
When a new sewing machine is first turned on, verify the rotational direction
on.
3) Verify the voltage and phase (single or three) with those given on the machine nameplate.
operating
operation:
conditions:
"V'
belt, bobbin winder pulley, or motor when the
do
not operate
the
area around/under the needle
the
machine without these safety
"V'
belt, adjusting
of
the pulley with the
I) Avoid using the machine at abnormally high temperatures (
lower) .
2)
Avoid using the machine in dusty conditions.
II
Cautions on use:
1.
Lubrication (1)
Pour oil
During operation, check the oil level periodically, and in cases
where the oil level is below position
position
Use
2.
Lubrication (2) (Fig.2a, Fig.2b)
When a new sewing machine
time, or sewing machine left out
used again, replenish a suitable amount
portions indicated
Note:
up
to position
"H".
white spindle oil.
by
Lubricate
(Fig.l)
"H"
arrow in the
the
Hook
of
the oil tank.
"L", replenish the oil supply up to
is
used for the first
of
use for a long time
of
oil to the
fig.
Base everyday.
is
35
·c
or
higher)
or low temperatures ( 5
·c
or
3.
Condition
of
oil lubrication (Fig.3):
-I-
While operating the machine, check the condition
of
oil lubrication through the oil check window.
4.
Cautions on operation
1) When the power is turned on or off, keep foot away from the pedal.
2)
It
should be noted that the brake might not work when the power is interrupted or power failure occurs during
sewing machine operation.
3) Periodically clean the machine.
• Operation
1.
How
two needles side with the long grooved (faces each other), and
insert it as deeply as it will go into the needle clamping holes,
tighten screws.
2.
How to wind the lower
Strength
thread, wind the bobbin loosely.
Uneven winding:
bobbin.
Winding amount: When the bobbin
insufficiently, tighten the adjusting screw.
to
attach
Note: Before attach needle, be sure to turn off the power.
Loosen the needle clamping screw; Hold the needles
of
winding: Particularly in the case
needle (Fig.4):
so
thread
If
the bobbin is wound unevenly, slide the thread guide toward the less wound portion
is
wound excessively, loosen the adjusting screw. When the bobbin
(Fig.S):
of
nylon or polyester
that the
is
wound
4
of
3.
Selection of
Thread
( Fig.6)
-2-
It is recommended to use
"S"
twist thread in the left needle (Viewed from front), and
0
Even
winding
an
fully
V\linding
amount
adjusting
screw
right needle.
When discriminate use
"S"
twist thread
4.
How
1)
Pass each upper thread through thread guide A
Note: when
as
to
route the
thin
well
of
as
"Z"
upper
slippery
needle thread is impossible, use
twist thread can be used.
thread (Fig.7, Fig.8):
thread
(polyester
thread
for example) is used
guide B as show in Fig. 7
2) With the take-up lever located at the upper most position, pass each thread in the order in Fig.8.
Note: Pressing
thread
can
be
pulled out easily.
the
upper
thread
loosening
button,
with
amount
4/5 of
capacrty
Fig.5
"Z"
twist thread in the needle. For bobbin thread,
pass
the
thread
the
upper
"Z"
twist thread in the
through
thread
5.
Adjustment
1)
Rotate the stitch length adjusting dial
A B A B A
of
stitch length and reverse sewing (Fig.9):
Needle thread
tension releasing button
Lead the Lead the
thread thread
leftward rightward
to
change the stitch length
Fig.8
-3-
2) Pressing the stitch length adjusting lever for reverse stitching.
6.
Setting bobbin ( Fig.lO):
Dial
.
Feed
0
Leading the lower thread and install the bobbin
Pull out thread from side
to rotating hook, then replace hook shaft; Press the bobbin bar, Leading the lower thread over bed plate.
7.
Threading of bobbin
While holding the needle thread by left hand, rotate the hand wheel one turn by right hand. By pulling up
the needle thread, the bobbin thread will be lifted. Close the slide plate
reverse
lever
A,
then install the bobbin case , Threading following
thread
(Fig.ll):
(Fig.ll)
Fig.lO
CD--®;
Put the bobbin case
A 0
,.?
;:::;;;;.
B X
_,>:::::::~
e
ex..?'-<~
8.
Balance of
9.
Lower thread tension (Fig.13):
There is virtually no need to adjust the lower thread tension, except for special kind
when slight adjustment will be necessary.
Turning the screw 1 clockwise will increase the tension
lower thread, otherwise, the tension
(Fig.l3).
10-.
Upper
thread
thread
tension (Fig.12):
of
lower thread will decrease.
tension (Fig.14):
..--
Balance
TIOh·t
bobbin
Loo&en
bobbin
I
tens1on
1 1
needle
tan&ion
neeae
tenston
of
It?
~
or
loose
Of
ugnt
.----~
I
Fig.l2
of
the fabrics or thread,
1)
The upper thread can
tension.
2)
Adjustment can be done by rotating the thread tension nut.
be
adjusted based on the lower thread
-4-
Figl4
11.
Adjustment
l)
Pressure should
2) Turning the pressure adjusting screw to adjust the
pressure
12.
of
presser foot
Timing between rotating hook motion
of
pressure
be
adjusted according to the material to
of
presser foot (Fig.15):
and needle motion (Fig.16):
l)
Set stitch length to
2) When needle is lifted 2.4mm from the lower dead
point, the following position relationship should
maintained:
• The upper edge
below the hook point
• The hook point should be located at the center
ax1s.
• Gap between the
0.05
should be
13.
Adjustment
mm
"6";
of
needle eye should
hook
point and the side face
of
Feed dog height (Fig.17):
be
2.3mm
be
of
of
be
needle
needle
sewn.
Gap between hook point and upper edge
1
~
··~"';'
2Ammfrom
needle
dead
needle eye
23~m~
~~
~·
lower
point
.'
0.05mm__..---
of
~
?
.......
Height
the following cautions:
of
feed dog should
1) Fabric will
pressure
low or pressure
3) Feed dog height should
at the top position.
of
2) Even stitch length cannot
For light fabric: Approx
For usual fabric: Approx l.Omm
For heavy fabric: Approx 1.2mm
be
presser foot is too large
of
be
damaged
presser foot is too small
adjusted for individual fabrics with
if
be
0.8mm
Adjustment procedure:
l)
Lay down the machine bed toward the other side;
2) Turn the balance wheel by hand stop
nosition from the smface
'
f.
.,Jscn the Screw and adjust the height
C';er
~
;,;c
a~ljusted,
feed ;Jog
tighten the screw.
height
is
factory-adjusted
Center
needle
the feed dog extends too
be
assured
measured at the point where the needle is
of
needle place;
if
the feed dog is too
when
the feed dog is raise to its
of
the feed dog;
to
1.2mm
high
or
of
axis
~I0.8mm
~ml1.0mm
Fig.l7
Needle
bar
screw
C---tGI!Ill
Needle
bar
screw
A__.
Position
screw
o
D
p
14. Adjustment the needle stop position C
l)
Loosen the needle
2) Rotate the
bar
Screw A;
needle clamp B one circuit (amount
00
18):
of
Adjustment is
-5-
Needleclamp
Fig.18l
B
g
~·
0.6mm),
0.3mm)
15.
or
loosen the needle
3)
Be
sure to make the needle clamp facing left side, tighten needle
Needle
bar
bar
stop position (left & right)
(Fig.19):
l)
Stop the motion ofleft-side needle bar:
Make
the stopper wrench to the position L
2)
Stop the motion
Make the stopper wrench to the position R
3) Two needles running at the same time:
Return the needle
runrung:
position automatically
16.
Press
down
Walking foot
of
right-side needle bar:
bar
of
restore plate, stopper wrench restore to 0
and
presser foot vertical stroke
screw C, rotate position screw D
left ur right from standstill to
half
a circuit (amount
bar
screw C and A
Bushing
wrench
of
Adjustment is
Fig.
19
adjustment
When fabric with large elasticity is sewn, or when thickness
fabric changes, the vertical stroke (movable range)
feet should
1)
Loosen the special bolt;
2)
The vertical strokes
the crank rod is moved downward and set;
3) The vertical strokes
the crank rod is moved upward and set;
4)
After the adjustment, tighten the special nut.
(Fig.20):
be
adjusted as follows:
of
the presser
of
presser feet become minimum
of
presser feet become minimum when
when
The vertical strokes of presser feet can be adjusted within a range
from
2mm
to
6mm.
17.
~afety
clutch device ·(Fig.21, Fig.22)
Safety clutch device is installed to prevent the hook and cog
belt from damage in case the thread is caught
the
mac.b.ine
I)
Function
A.
unloaded. Then
shaft only will rotate. Stop the operation
B.
hook.
C.
hook shaft rotates lightly
as follows.
:s
load•::d
of
safet~'
Vv'hen
Tum
th·~
Clean the thread thoroughly which is caught into the
the cog belt hub by hand, and check whether the
abnormally operati:::n.
dutch:
s2fcty
dmch
acts, the cog bell pnlley will be
th'.~
rotation
of
hook shaft
and
properly, place the clutch device
of
machine.
into the hook when
""~ll
stop. The arm
of
Special bolt Crank
Crank
Push
button
Low
Shaft
rod
Eccentric
Pin
,
..
Fig.22- J
-6-
2)
How to
slowly
Force
3)
the lower shaft. The force proportionally increases as the mark faces the outside;
18.
set
the
safety clutch (Fig.22)
A.
While pressing down the push button on the opposite side
by
right hand away from you;
B.
The balance wheel will stop
C.
Release the push button, the safety clutch device
applied
A.
The force applied to the safety clutch
B.
To
C.
After the adjustment, tighten the set screw.
to
the
safety
adjust the force slide the timing belt, loosen the set screw, and turn the eccentric pin;
by
the gear plate, but tum the balance wheel more firmly;
clutch (Fig.22)
is
set.
is
the smallest when the
of
bed
mark
by
of
Installation of Belt cover (Fig.23 ):
left hand, turn the balance wheel
eccentric pin faces the center
of
Set the screws (
of
the
direction
insert the belt guard 1 from the top
arrow,
4,
6 ) and the washer ( 7 ) on the arm as illustrated. Assemble the belt guard 3 in the
tighten its screw. The assembling
of
the pulley into the inside
of
the belt guard 5 is the same as the belt guard 3,
of
the 3 and 5, tighten the screws ( 2 ) .
then,
--7-
Fig.23
Specifications:
c
~
Material weight Medium Heavy material
Max. sewing speed
Stitch length
Needle
Presser
foot stroke
Alternating movemer..t
Stitch-length adjusting
Alternating movement
bar
stroke
By
By
Needle
Motor
Needle gauge
hand
knee
GC24628-1
2000rpm
0-7mm
·---·----"-
36mm
8mm
16mm
2-6mm
Dial type
Automatic
DPX17
Clutch motor
7.94mm 9.52mm
(22#--24#)
370W
-8-
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