HIGHLEAD GC24628-1 User manual
HIGH
LEAD
GC24628-1
Purchasing
Dept
Copy
Post-Bed
Compound
Split Needle
Bar
Feed
Lockstitch
Sewing Machine
Instruction
Manual
Parts Catalog
SHANGHAI HUIGONG
N0.3
SEWING MACHINE FACTORY
From the library of: Diamond Needle Corp
From the library of: Diamond Needle Corp
---
CONTENTS---
Instruction
Manual
Preparation for operation
..............................
·
................................
1
1, Safety precautions
.....................................................................
1
2,
Precautions
before
starting
operation
.......................................................
1
:L Precautions for
operating
conditions
.......................................................
1
• Cautions
on
use
......................................................................
1
1, Lubrication
(J)
.........................................
·
...............................
1
2,
Lubrication (2)
........................................................................
1
3,
Condition
of
oil
lubrication
..............................................................
l
4,
Cautions
on
operation
..................................................................
2
•
Or)et·atiort
...........................................................................
2
I, How to attach
needle
...................................................................
2
2,
How to
wind
the
lower
thread
...........................................................
2
:i,
Selection
of
Thread
....................................................................
3
4,
How to route the
upper
thread
............................................................
:J
o,
Adjustment
of
stitch
length
and
reverse
sewing
...............................................
4
fi,
Setting
bobbin
........................................................................
4
7,
Threading
ofbobbin
thread
..............................................................
4
tL Balance
of
thread
tension
................................................................
4
Y,
Lower thread tension
...................................................................
4
I
0,
Upper thread
tension
..................................................................
4
11, Adjustment
of
pressure
of
presser foot
....................................................
:'i
1•1
L,
Timing
between
rotating
hook
motion
and
needle motion
......................................
5
1:\,
AdjustmentofFeeddogheight
..........................................................
5
: '
\Valking
foot
and
presser
foot
vertiCal
stroke
adjustn1ent
......................................
6
I.
, S
1fety
clutch
device
...................................................................
6
;.,~\:
<iation
ofBelt
cover
...............................................................
7
.
i!.~:,l1
il.)iJS
............................................................................
7
Parb
CaLliog
.\,
ARf'vl
BED
AND
ITS
ACCESSORIES
.....................................................
i-l
ll,
THREAD
TENSl00-J
REGULATOR
MECHANISM
.........................................
10
From the library of: Diamond Needle Corp
C
ARM
SHAFT MECHANISM
...........................................................
13
D,
UPPER SHAFT & PRESSER
FOOT
MECHANISM
.........................................
15
L TAKE-UP THREAD AND SHAFT MECHANISM
..........................................
18
F, STITCH REGULATOR MECHANISM
...................................................
21
G,
LOWER
SHAFT & FEED ROCK SHAFT MECHANISM
....................................
23
H,
HOOK SADDLE MECHANISM
........................................................
26
L OIL LUBRICATION MECHANISM
.....................................................
:JO
J, ACCESSORIES
......................................................................
:53
From the library of: Diamond Needle Corp
II
Preparation for operation:
1.
Safety precautions:
I) When turning the power on, keep your hands and fingers away from
the
area around/under the needle
and the area around the pulley.
2)
Power must be turned offwhen 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
"V'
belt, adjusting
the machine, or when replacing.
4)
Avoid placing fingers, hairs, bars etc. near the pulley,
"V'
belt, bobbin winder pulley, or motor when the
machine is in operation.
5)
Do not insert fingers into the thread take-up cover, under/around the needle, or pulley when the machine
is
in operation.
6)
If
a belt cover, finger guard, eye guard are installed,
do
not operate
the
machine without these safety
devices.
2.
Precautions before
starting
operation:
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
of
the pulley with the
power
on.
3) Verify the voltage and phase (single or three) with those given on the machine nameplate.
3.
Precautions for
operating
conditions:
I) Avoid using the machine at abnormally high temperatures (
35
·c
or
higher)
or low temperatures (5
·c
or
lower) .
2)
Avoid using the machine in dusty conditions.
II
Cautions on use:
1.
Lubrication (1)
(Fig.l)
Pour oil
up
to position
"H"
of
the oil tank.
During operation, check the oil level periodically, and in cases
where the oil level is below position "L", replenish the oil supply up to
position "H".
Use white spindle oil.
2.
Lubrication (2) (Fig.2a, Fig.2b)
When a new sewing machine
is
used for the first
time, or sewing machine left out
of
use for a long time
is
used again, replenish a suitable amount
of
oil to the
portions indicated
by
arrow in the
fig.
Note:
Lubricate
the
Hook
Base everyday.
3.
Condition
of
oil lubrication (Fig.3):
-I-
From the library of: Diamond Needle Corp
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
to
attach
needle (Fig.4):
Note: Before attach needle, be sure to turn offthe power.
Loosen the needle clamping screw; Hold the needles
so
that the
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
thread
(Fig.S):
Strength
of
winding: Particularly in the case
of
nylon or polyester
thread, wind the bobbin loosely. 4
Uneven winding:
If
the bobbin is wound unevenly, slide the thread guide toward the less wound portion
of
bobbin.
Winding amount: When the bobbin
is
wound excessively, loosen the adjusting screw. When the bobbin
is
wound
insufficiently, tighten the adjusting screw.
3.
Selection of
Thread
(Fig.6)
-2-
From the library of: Diamond Needle Corp
It is recommended to use
"S"
twist thread in the left needle (Viewed from front), and
"Z"
twist thread in the
right needle.
V\linding
amount
adjusting
screw
0
Even
winding
with
an
amount
4/5 of
fully
capacrty
Fig.5
When discriminate use
of
needle thread is impossible, use
"Z"
twist thread in the needle. For bobbin thread,
"S"
twist thread
as
well
as
"Z"
twist thread can be used.
4.
How
to
route the
upper
thread (Fig.7, Fig.8):
1)
Pass each upper thread through thread guide A
Note: when
thin
slippery
thread
(polyester
thread
for example) is used
pass
the
thread
through
thread
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
the
upper
thread
loosening
button,
the
upper
thread
can
be
pulled out easily.
A B A B A Needle thread
tension releasing button
Lead the Lead the
thread thread
leftward rightward
5.
Adjustment
of
stitch length and reverse sewing (Fig.9):
1)
Rotate the stitch length adjusting dial
to
change the stitch length
-3-
Fig.8
From the library of: Diamond Needle Corp
2) Pressing the stitch length adjusting lever for reverse stitching.
6.
Setting bobbin ( Fig.lO):
Dial
0
. Feed
reverse
lever
Fig.lO
Leading the lower thread and install the bobbin
Pull out thread from side
A,
then install the bobbin case , Threading following
CD--®;
Put the bobbin case
to rotating hook, then replace hook shaft; Press the bobbin bar, Leading the lower thread over bed plate.
7.
Threading ofbobbin
thread
(Fig.ll):
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
(Fig.ll)
A 0
,.?
;:::;;;;.
I
It?
Balance
tens1on
B X
_,>:::::::~
1 1
~
e
TIOh·t
needle
or
loose
bobbin
tan&ion
ex..?'-<~
..--
Loo&en
neeae
Of
ugnt
8.
Balance of
thread
tension (Fig.12):
9.
Lower thread tension (Fig.13):
bobbin
tenston
.----~
I
Fig.l2
There is virtually no need to adjust the lower thread tension, except for special kind
of
the fabrics or thread,
when slight adjustment will be necessary.
Turning the screw 1 clockwise will increase the tension
of
lower thread, otherwise, the tension
of
lower thread will decrease.
(Fig.l3).
10-.
Upper
thread
tension (Fig.14):
1)
The upper thread can
be
adjusted based on the lower thread
tension.
2)
Adjustment can be done by rotating the thread tension nut.
-4-
Figl4
From the library of: Diamond Needle Corp
11.
Adjustment
of
pressure
of
presser foot (Fig.15):
l)
Pressure should
be
adjusted according to the material to
be
sewn.
2) Turning the pressure adjusting screw to adjust the
pressure
of
presser foot
12.
Timing between rotating hook motion
and needle motion (Fig.16):
l)
Set stitch length to
"6";
2) When needle is lifted 2.4mm from the lower dead
point, the following position relationship should
be
maintained:
• The upper edge
of
needle eye should
be
2.3mm
below the hook point
• The hook point should be located at the center
of
needle
ax1s.
• Gap between the
hook
point and the side face
of
needle
should be
0.05
mm
13.
Adjustment
of
Feed dog height (Fig.17):
Height
of
feed dog should
be
adjusted for individual fabrics with
the following cautions:
1) Fabric will
be
damaged
if
the feed dog extends too
high
or
pressure
of
presser foot is too large
2) Even stitch length cannot
be
assured
if
the feed dog is too
low or pressure
of
presser foot is too small
Gap between hook point and upper edge
of
needle eye
1
23~m~
~
.'
~
··~"';'
~~
?
2Ammfrom
~·
needle
lower
0.05mm__..---
.......
dead
point
Center
of
needle
axis
3) Feed dog height should
be
measured at the point where the needle is
~I0.8mm
at the top position.
For light fabric: Approx 0.8mm
For usual fabric: Approx l.Omm
For heavy fabric: Approx 1.2mm
Adjustment procedure:
l)
Lay down the machine bed toward the other side;
2) Turn the balance wheel by hand stop
when
the feed dog is raise to its
nosition from the smface
of
needle place;
'
f.
.,Jscn the Screw and adjust the height
of
the feed dog;
C';er
a~ljusted,
tighten the screw.
~
;,;c
feed ;Jog
height
is
factory-adjusted
to
1.2mm
14. Adjustment the needle stop position C
00
18):
l)
Loosen the needle
bar
Screw A;
2) Rotate the needle clamp B one circuit (amount
of
Adjustment is
-5-
~ml1.0mm
Fig.l7
Needle
bar
screw
C---tGI!Ill
D
Needle
bar
screw
A__.
p
Position
screw
o
Needleclamp
B
~·
g
Fig.18l
From the library of: Diamond Needle Corp
0.6mm),
or
loosen the needle
bar
screw C, rotate position screw D
half
a circuit (amount
of
Adjustment is
0.3mm)
3)
Be
sure to make the needle clamp facing left side, tighten needle
bar
screw C and A
15.
Needle
bar
stop position (left & right)
(Fig.19):
l)
Stop the motion ofleft-side needle bar:
Make
the stopper wrenchto the position L
2)
Stop the motion
of
right-side needle bar:
Make the stopper wrench to the position R
3) Two needles running at the same time:
Return the needle
bar
of
left ur right from standstill to
runrung: Press
down
restore plate, stopper wrench restore to 0
position automatically
16.
Walking foot
and
presser foot vertical stroke
adjustment (Fig.20):
When fabric with large elasticity is sewn, or when thickness
of
fabric changes, the vertical stroke (movable range)
of
the presser
feet should
be
adjusted as follows:
1)
Loosen the special bolt;
2)
The vertical strokes
of
presser feet become minimum
when
the crank rod is moved downward and set;
3) The vertical strokes
of
presser feet become minimum when
the crank rod is moved upward and set;
4)
After the adjustment, tighten the special nut.
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 into the hook when
the
mac.b.ine
:s
load•::d
abnormally operati:::n.
I)
Function
of
safet~'
dutch:
A.
Vv'hen
th·~
s2fcty
dmch
acts, the cog bell pnlley will be
unloaded. Then
th'.~
rotation
of
hook shaft
""~ll
stop. The arm
shaft only will rotate. Stop the operation
of
machine.
B.
Clean the thread thoroughly which is caught into the
hook.
Bushing
wrench
Special bolt Crank
Crank
rod
Push
button
C.
Tum
the cog belt hub by hand, and check whether the
hook shaft rotates lightly
and
properly, place the clutch device
as follows.
Low
Shaft
Eccentric
Pin
-6-
Fig.
19
,
..
Fig.22- J
From the library of: Diamond Needle Corp
2)
How to
set
the
safety clutch (Fig.22)
A.
While pressing down the push button on the opposite side
of
bed
by
left hand, turn the balance wheel
slowly
by
right hand away from you;
B.
The balance wheel will stop
by
the gear plate, but tum the balance wheel more firmly;
C.
Release the push button, the safety clutch device
is
set.
3)
Force
applied
to
the
safety
clutch (Fig.22)
A.
The force applied to the safety clutch
is
the smallest when the
mark
of
eccentric pin faces the center
of
the lower shaft. The force proportionally increases as the mark faces the outside;
B.
To
adjust the force slide the timing belt, loosen the set screw, and turn the eccentric pin;
C.
After the adjustment, tighten the set screw.
18.
Installation ofBelt cover (Fig.23 ):
Set the screws (
4,
6 ) and the washer ( 7 ) on the arm as illustrated. Assemble the belt guard 3 in the
direction
of
the
arrow,
tighten its screw. The assembling
of
the belt guard 5 is the same as the belt guard 3,
then,
insert the belt guard 1 from the top
of
the pulley into the inside
of
the 3 and 5, tighten the screws ( 2 ) .
Fig.23
--7-
From the library of: Diamond Needle Corp
Specifications:
~
GC24628-1
c
Material weight Medium Heavy material
Max. sewing speed 2000rpm
Stitch length 0-7mm
·---·----"-
Needle
bar
stroke
36mm
Presser
By
hand 8mm
foot stroke
By
knee 16mm
Alternating movemer..t
2-6mm
Stitch-length adjusting Dial type
Alternating movement Automatic
Needle
DPX17
(22#--24#)
Motor Clutch motor
370W
Needle gauge 7.94mm 9.52mm
-8-
From the library of: Diamond Needle Corp
A.ARM
BED
AND
ITS
ACCESSORIES
2 3 4
(2)
5 6 8 9
10
19
18
(
15)
17
16
15
14
13
-9-
From the library of: Diamond Needle Corp
A.ARM BED AND ITS ACCESSORIES
Fig. Part No. Description Pes. Remarks
No.
A01
HA300B2090
Rubber plug 2
A02
HA300B2170
Screw 30 SM11164
(40)
X9
A03
H4716B8001
Oil guide plate 1
A04
H4717B8001
Thread take-up cover 1
A05
H4715B8001
Rubber plug 1
A06
H4718B8001
Arm
side cover (left) 1
A07
H2000B2010
Rubber plug 1
A08
H4719B8001
Arm
side cover (right) 1
A09
HA700B2060
Screw 2 SM11/64
(40)
xs
A10
H2400B2100
Thread guide 1
All
HA307B0673
Rubber plug 1
A12
H4715H8001
Push button 1
A13
H4714H8001
Spring 1
Al4
H007013050
E-type ring 1
Al5
H2000M0090
Cap 2
A16
H3200B2100
Screw 1 SM9/64
(40)
x6.5
A17
H3212B0066
Thread guide 1
Al8
H3000D2160
Screw 1 SM9/64
(40)
x4.5
A19
H4726B8001
Thread guide 1
A20
H0213B8001
Face plate 1
A21
H2400B2080
Screw 2 SM3/16
(28)
x12.1
A22
H2400B2070
Thread guide 1
A23
H0212B8001
Shaft supporter 1
A24
H2400B2060
Spacer 1
A25
H3200B2060
Oil guide plate 1
A26
HA7311C606
Screw 2 SM11/64(40)x
15
A27
H602030200
Pin 2
A28
HA100B2110
Screw 2
SMII/64(40)x5.5
-
10-
From the library of: Diamond Needle Corp
B.
THREAD
TENSION
REGULATOR
MECHANISM
1 2 3 4 8 9
10
11
12
13
14
15
16
17 18
----------------------20
----------------------21
~~;;:;.,.
22
~----23
24
25
26
27
28
29
48
47
46 45
44
43
42
41
40
39
38 37 36 35
34 33
32
31
30
-11-
From the library of: Diamond Needle Corp
B.
THREAD
TENSION
REGULATOR
MECHANISM
49
50
51
52
5
54
(
11)
~~
81
78
77
76
75
74 73 72
71
70
69 68
67
66 65 64
63 62
61
60
-12-
From the library of: Diamond Needle Corp
B.THREAD TENSION
REGULATOR
MECHANISM
Fig. Part No. Description Pes. Remarks
No.
801
H2504C6510
Screw 2 SM9/64
(40)
x3
802
H3221B3142
Tension releasing plate 1
803
H3221B6812
Tension releasing spring 1
804
H4705C8001
Screw 1 SM9/64
(40)
x5.5
805
H4706C8001
Lever 1
806
HA7311C306
Screw 1 SM9/64 (
40)
x7
807
H4707C8001
Mounting plate 1
808
H007013050
E-type ring 1
809
H3221B6820
Mounting plate 1
BlO
HA300C2030
Screw 2 SM11/64
(40)
X8
811
H3221B6810
Nut 2
812
H4708C8001
Spring 1
813
H4709C8001
Push button 1
B14
H:3221B0685
Thread tension stud 1
SMll/64
(40)
X14
815
H3221B0683
Thread tension stud 1 SM11/64
(40)
X14
B16
HA112B0693
Thread tension disc 4
817
H3300B2040
Spring 2
818
HA710B0671
Thumb nut 2
819
H3221B0682
Pin 3
820
HA106B0676
Screw 1 SM9/64
(40)
x6
821
H3306B0661
Thread guide 1
822
HA310B0702
Tension releasing disc 2
823
H4710C8001
Spring 2
824
HA115B7010
Thumb nut revolution stopper 2
825
HA310B0701
Thumb nut 2
826
HA310B0705
Thread tension disc 4
827
H3221B6816
Pin 1
828
H3221B0689
Thread tension stud 1 SM1/4
(40)
X23
829
H3221B0686
Thread tension stud 1 SM1/4
(40)
X23
830
H32481B721
Thumb nut 1
B31
H32481B621
Take-up spring guide 1
332
H32481BC21
Screw 1 SM9/64
(40)
X6
·'
H32481BB21
Stopper 1
~
1
:;·~4818921
Thread tension post 1
B.?
lB521
Screw 2
SMl/8
(44)
X3.9
l
i~821
Bushing 1
I
..
\)
\
'"
,.
!'21
Plate complete 1
F_08
•.
;•
~U300
l Thread take-up spring 1
839
tL)2·1-t5
~
GE?
1 Plate complete 1
840
H4
71
:.;c8uO
1 }Thread take-up spring 1
841
H32481BD2l
1
r·
1
: ';u'<: comp ete 1
842
H32481B421
Thread tension stud 1 SM9/64
(40)
X2.9
843
H32481B121
Thread tension stud 1
SMl/4
(40)
X38.5
-
-
13-
From the library of: Diamond Needle Corp
B.THREAD TENSION REGULATOR MECHANISM
Fig.
Part
No.
No.
B44
H3230K0751
B45
H3221B6817
B46
H4769E8001
B47
H3200B2100
B48
H3221B6819
B49
H3400D2030
B50
H340500663
B51
H003057050
B52
H340500661
B53
H0207C8001
B54
HE512D8001
B55
H0204C7101
B56
H3400L0050
B57
HA7311C606
B58
H3400D2060
B59
H3407D0671
B60
H3408D0681
B61
H3408D0682
B62
H3408D0686
B63
H0210C8001
B64
H007013040
B65
H3408D0684
B66
H3408D0685
B67
H3400D2100
B68
HA300C2030
B69
H0208C8001
B70
H0209C8001
B71
H3400D2110
B72
J:13210C3021
B73
H3404D0652
B74
HA7311CC06
B75
H3404D0653
B?fi
lLA04D0!{;::;
~~)
I
ir··
tn'~"·r::·
.,
! . 1
....
il
.
.}-
;l.:!,)
-· J !
B7
87
B8
B8
'-
lLJ3
,,
' •
(.
'"- .
,1
\1
''tiJ·'lD
it;hu
l
9
IH3404D0658
0
!H3404D0654
1
!H3404D0651
'---·
Description
Screw
Pin
Pin
Screw
Stopper
Screw
Link
Nut
Screw bar
Crank
Screw
Stop motion control lever complete
Tirread guide
Screw
Cammlation
Pin
Pin
Spring
Tension bracket
Screw
E-type ring
Lever
Pin
Spring
Screw
Plate
Cannulation
Screw
Crank
Pin
Screw
Pin
j
:lio
1~
d
'
I,
;..:::-:p:
trif~
I
I
Q,
..
,.o
'',
L.JV~
'-
.-v
'Spring
Pin
Guide
--
14-
Pes. Remarks
1 SM11/64
(40)
x10
1
1
1 SM9/64
(40)
x6.5
1
2 SM11!64(40)x9.5
2 JKM5
2
1
1
1 SM11/64
(32)
X12
1
1
1 SM11/64(40)x15
1 L=7.7
1
I
1
1
1 SM11/64(40)x22
1 GB/T896 4
1
I
1
2 SMI1/64(40)x8
1
1 L=15.2
1 SM9/64(40)x5
1
1
1 SM9/64
(40)
x6.5
1 !
I I
2 I
l
I " I!,,'fS!l6
(28)
x4
2
2
I
From the library of: Diamond Needle Corp
C.ARM
SHAFT
MECHANISM
4 5 6 7 8 9 10
-15-
14 15
17
18
19
20
From the library of: Diamond Needle Corp
C.ARM SHAFT
MECHANISM
Fig. Part No. Description Pes. Remarks
No.
COl
HA307C0662
Set screw 1
SMl/4
(40)
x6
C02
H3404B0011
Crank 1
C03
HA105D0662
Set screw 1
SMl/4
(40)
X4
C04
HA100C2060
Screw 1 SM9/32
(28)
x13
cos
HA100C2070
Screw 1 SM9/32
(28)
x14
C06
H4708D8001
Set screw 1 SM114(24)X13
C07
H32111B104
Felt 1
cos
H32111B204
Arm
shaft bushing (left) 1
C09
H4709D8001
Arm
shaft 1
ClO
H3205C0661
Spring flange 3
Cli
HA113F0684
Screw 3 SM1S/64
(28)
xs.s
C12
H3205Cl021
Pulley 1
Cl3
HA100F2130
Screw 1
SMlS/64
(28)
X14.S
C14
H3205J0662
Bearing 1
CIS
H3205J0661
Collar 1
C16
HA110D0672
Screw 2 SM1S/64
(28)
X12
Cl7
H4100C2040
Pulley 1
C18
H6304C8001
Cog belt 1
C19
HA104F0654
Screw 1 SM15/64 (
28)
X
10
C20
H4713D8001
Link 1
C21
H4714D8001
Pin 1
C22
H4716D8001
Spring 1
C23
H007013025
E-type ring 1
C24
H4717D8001
Link 1
C2S
H4718D8001
Pin 1
C26
H4719D8001
Link 1
C27
H4715D8001
Pin 1
C28
H4720D8001
Bushing 1
C29
H4721D8001
Screw 1 SM15/64(28)x10.5
C30
H4722D8001
Pulley 1
C31
H4723D8001
Screw 2 SM15/64(28)x4.5
i i
I I I
I I
I i I
I ! I '
I l !
l
-
16-
From the library of: Diamond Needle Corp
Table of contents
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