HIGHLEAD HLK-3020 Instruction Manual

HLK-3020
Direct Drive Electronic Bartacking Machine For Soft
Cushion
Instruction Manual
Parts Catalog
S
HANGHAI BIAOZHUN HAILING SEWING MACHINERY CO., LTD
.

This technical manual explains the instructions how to operate and maintain the sewing
machine．All information in this technical Manual are subject to change without notice．
ShangHai HuiGong CORPROTATION has all the copyrights on this technical manual．
Reprinting the parts or all of this technical manual is not allowed without permission．
FOR YOUR SAFETY!
If you operate the sewing machine first time，please make sure to read the following
instructions for your safety and proper operation．
In this technical manual。the notice CAUTION is mentioned at some paragraph to attract your attention
for the safety．Please keep it in mind whenever you work with the sewing machine．
CAUTIONis used as the notice to warn a possible danger to cause a wound
Explanations for the warning signs
NO Warning sign Meanings of warning sign
1
2
3
Caution for sewing machine operation：
Warning to operate the sewing machine
without safety guards and to prohibit
doing any operation except sewing
while the power is turned on．
<Interpretation of sign>
·Do not operate without finger guard，eye
guard ，belt cover and other safety
devices．
·Before threading，changing needle and
Caution for a wound on the fingers：
Warning to a possible danger to cause a
wound on the fingers under the specified
operation．
Caution for the fingers：
Warning to a possible danger to be caught
the fingers in the machine under the
specified operation．

1. Temperature and humidity
During operating：
The atmosphere temperature should not exceeded more 350 (95°F) or less 5°C(41°F)℃．
During transportation：
The atmosphere temperature should not exceeded more 55°C(131°F) or less -10°C(18°F).
The relative humidity in the atmosphere should not exceeded more 85％or less 45％．
2. Atmosphere for the machine operation
In the atmosphere filled with dust or corrosive gas．
In the atmosphere filled with flammable or explosive gas．
3. Power source voltage
In the place where the power fluctuation exceeds more or less 10％of the fixed power voltage．
In the place where the power source cannot supply enough voltage to keep the motor running．
4. Power source voltage
In the place where the power fluctuation exceeds more or less 10％of the fixed power voltage．
In the place where the power source cannot supply enough voltage to keep the motor running．
5. Noise
In the place near a high frequency transmitter or a high frequency welder．
In the place filled with strong electromagnetic radiation or magnetic field．
Caution
★ For avoiding the sewing machine from the troubles，please do not operate the sewing
machine under the following conditions．

------- CONTENTS -----
1. STRUCTURE OF THE SEWING MACHINE ······························································································· 1
2. SPECI FICATION··········································································································································· 2
3. INSTALLATION············································································································································ 2
3-1. Installation of the control box ····················································································································· 2
3-2. Installation of the power switch ·················································································································· 3
3-3. Installation of the oil pan ···························································································································· 3
3-4. Installation of the sewing machine head······································································································ 3
3-5. Installation of the spindle motor·················································································································· 4
3-6. Connection of the operation panel··············································································································· 4
3-7. Connection of the electric cables················································································································· 5
3-8. Installation of the thread stand ···················································································································· 5
4. LUBRICATION ············································································································································ 7
4-1. Filling the oil tank········································································································································· 7
4-2. Oiling···························································································································································· 7
5. PROPER OPERATION ·································································································································· 8
5-1. Installation of the needle····························································································································· 8
5-2. Threading the upper thread ························································································································· 8
5-3. Winding the bobbin thread·························································································································· 9
5-4. Settling the bobbin······································································································································ 9
5-5. Setting the bobbin case ····························································································································· 10
6. PROPER SEWING······································································································································· 10
6-1. Operation of the halt switch······················································································································ 10
6-2. The sewing operation································································································································ 10
6-3. Adjustment of the thread tension··················································································································11
7. STANDARD ADJUSTMENT······················································································································· 12
7-1. Adjustment of the needle bar position······································································································· 12
7-2. Adjustment of the position between the needle and the shuttle hook························································· 13
7-3. Adjustment of the clearance between the shuttle hook and the needle······················································· 13
7-4. Adjustment of the clearance between the driver and the needle ································································ 13
7-5. Adjustment of the thread guide··················································································································· 14
7-6. Adjustment of the wiper···························································································································· 15
7-7. Adjustment of the presser foot ·················································································································· 16
7-7-1．Adjustment of the presser foot position································································································· 16
7-7-2．Adjustment of the presser foot lift during the sewing············································································ 17
7-7-3 Adjustment of the presser foot timing··································································································· 18

7-7-4 Adjustment of the presser foot standard height····················································································· 19
7-8. Adjustment of the bobbin winder·············································································································· 20
7-9. Adjustment of the work holder·················································································································· 20
7-10. Adjustment of the trimmer cam follower ·································································································· 21
7-11. Adjustment of the position for the movable knife point············································································· 21
7-12. Adjustment of the fixed knife position······································································································ 21
7-13. Adjustment of the thread take up spring swing stroke··············································································· 22
7-14. Adjustment of the thread take up spring tension························································································ 22
7-15. Adjustment of the thread tail after the trimming························································································ 22
7-16. Cancellation of the trimming function······································································································· 23
7-17. Adjustment of the upper thread tension release························································································· 23
7-18. Adjustment of the mechanical home position···························································································· 23
7-18-1. Adjustment of the X timing belt tension ···································································································· 24
7-18-2. Adjustment of Y stepping motor position······························································································· 24
8. MAINTENANCE ········································································································································· 25
8-1. Cleaning ····················································································································································· 25
9. BAD SEWING CONDITION＆ITS CAUSE AND REM EDY···································································· 26
零件样本
A. ARM BED &IT'S ACCESSORIES（一） ··································································································· 29
B. ARM BED &IT'S ACCESSORIES（二） ··································································································· 32
C. SEWING MECHANISM（一） ·················································································································· 36
D. SEWING MECHANISM（二） ·················································································································· 39
E. X-Y TABLE MECHANISM（一） ············································································································· 42
F. X-Y TABLE MECHANISM（二） ············································································································· 44
G. X-Y TABLE MECHANISM（三） ············································································································· 47
H. WORK HOLDER MECHANISM ················································································································ 49
I. PRESSER FOOT MECHANISM（一） ······································································································ 52
J. PRESSER FOOT MECHANISM（二） ······································································································ 54
K. THREAD TRIMMING MECHANISM ········································································································ 57
L. WIPER MECHANISM································································································································· 60
M. OIL LUBRICATION MECHANISM············································································································ 63
N. CABLE COMPONENT & DETECTOR MECHANISM·············································································· 65
O. ACCESSORIES（一） ································································································································ 67
P. ACCESSORIES（二） ································································································································ 69

— 1 —
1、STRUCTURE OF THE SEWING MACHINE
HLK-3020 electronic pattern sewing machine is constructed with the following main parts
①Sewing machine head Thread stand Operation Panel②③ ④Power supply changer
⑤Control Unit ⑥Work holder foot switch ⑦Electromagnetic valve ⑧Wooden Table
⑨Halt switch

— 2 —
2 SPECI FICATION
Sewing area：X-Direction(left／right) 150mm
Y-Direction(forward／backward) 100mm
Maximum sewing speed：2700 rpm
Sewing speed：10 steps variable from 200 to 2700 rpm
Stitch length：0.1 to 12.7mm
Stitch type：Single needle lock stitch
Needle bar stroke ：41.2 mm
Thread take up lever stroke：68mm
Class of needle：DP × 17#18 (the standard specification)
Presser foot lift：20 mm
Presser foot alternation：Variable from 4mm to 10mm(4mm is standard)
Work holder lift：25 mm
Hook：Largesizeshuttlehook
Bobbin case：With non racing spring
Bobbin：Large size aluminum bobbin
Thread trimmer system: Horizontal engagement with fixed knife and movable knife
Lubrication system: Manual oiling and replenishment with the oil braids from the oil tanks
Lubrication oil：White machining oil
X—Y drive system：Stepping motor and X-Direction timing belt drive
Y-Direction gear bar guide rail Intermittent or continuous feeding
Machine dimension：1,200mm (W) × 1200mm (L) × 1,300mm (H)
main motor: 750W
3 INSTALLATION
Caution
★ The machine should be installed by the specialists who have enough experience for the sewing
machine installations．
★ All the necessary electric wiring should be done by electric engineers who are qualified for the electric
wiring．
★ If any damage or fault is found on the machine at the installation，please do not operate until it is
repaired．
★ Please do not operate the sewing machine with excessive modifications from the standard specification.

— 3 —
3-1 Installation of the control box
If the control box is purchased without
assembling to the table, the control box
has to be installed underneath the table.
Please install the control box with the
instruction in the paragraph
3-2 Installation of the power switch
If the power switch is purchased without assembling to the table，the power switch has to be attached with
the following procedure．
(1) Mount the power switch○
1 with the wood screw○ 2 underneath the table as shown on the figure．
(2) Fix the electric cords with the staples○
3 underneath the table．
(3) Hook up the connector○
8 of the power switch○ 1 to the control box○ 7．
(4) Attach the power plug○
5 to another end of the power switch cord○ 4．Connection of the foot switch
Connect the foot switch○
6 to the control box○ 7 .The foot switch is enclosed in the accessory box．

— 4 —
★For safety, please use a crane or a crane to install the sewing machine. At the same time to pay
attention to table can not move, arm and bed have a stable support.
3-3 Installation of the oil pan
Fix the oil pan○ 1 at its four corners on the table top with four.
3-4 Installation of the sewing machine head
（1）、Step on the rack at the foot of the brake, fixed frame, let bedplate can not move, take out of the right
holder⑦, and left bracket ⑧, fixed to the platen。
（2）、Lift the sewing machine ②, remove the rubber pad attachment box ⑥attached to the bottom surface of
the seat lug.
（3）、Remove the hinge shaft ③into the seat inside the shaft hole, and then remove the rubber sleeve ④and a
hinge seat ⑤is inserted into the hinge shaft ③screws into the bedplate.
（4）、Lift the sewing machine, the head to rotate about a hinge axis tilt, remove nitrogen spring ⑪into the
bottom of the machine base surface position, insert pin (up) ⑫, and then remove the support frame ⑰,
spring ⑯, into the bottom of the machine base surface position, insert rod shaft ⑮, remove the rubber
pad ⑱, fixed to the base.
（5）、Remove the thick washer ⑬with a screw fixing bracket⑦, ⑧of the width. Adjust the height of the nose,
so that the gas spring ⑪below the hole with the bracket⑦, ⑧. At the long groove below, is inserted in
the pin shaft (under ⑫), both sides into rings.
（6）、Remove the support bar seat ⑨, fixed to the platen, reduce head height, will support frame ⑰pressed
into the slot of the support bar seat ⑨insert rod shaft ⑩。
（7）、Support ⑰, third gear can adjust the height of the sewing machine.

— 5 —
3-5 Installation of the spindle motor
If the spindle motor has been removed from the machine for the adjustment or the like, fix the spindle
motor as the procedure described right.
(1) Spindle motor according to right: put the signal cord upward.
(2) Adjust the plane of the motor shaft alignment of the left on the motor mounting holes, 45 ° Angle
adjustment.

— 6 —
3-6 Connection of the operation panel
Please connect the operation panel with the instructions of operation panel manual enclosed in the packing．
3-7 Connection of the electric cables
Please make sure to ground the place
where there is a mark. Failure to do
so may cause electric shock and/or
malfunction.
名称 连接
X4 Spindle motor power
X5 Spindle motor signal
X6 RS-232C（selection）
X7 Operation panel
X8 Foot switch
X9 Control signal one
X10 RS-232C（selection）
X11 Control signal two
X12 Y spindle stepping motor
X13
X14 X spindle stepping motor
X15
G Grounding wires

— 7 —
3-8 Installation of the thread stand
(1) Assemble the thread stand with the instructions enclosed in the packing．
(2) Fit the thread stand○
1 in the thread stand holeg on the tabletop．
(3) Fix the thread stand○
1 firmly from the rear side of the table with tightening the nut○ 4andthe
washers○
2,
○
3．
4 LUBRICATION
Caution
★Please make sure to turn power switch off before oiling．
★Please make sure to put some oil before starting the operation of the brand new machine or
NOTE : Please use high quality white machining oil．
4-1 Filling the oil tank
Pour the oil through the oil hole①to the oil tank②on the machine arm．Move the work holder by hand to
the right end then，machine bed．Please Pour the oil through the oil hole③⑤ to the oil tank，fill with the
oil over level mark④⑥of the oil tank．
4-2 Oiling
Put some oil to red marked oil
holes(NO. ⑦～⑧)．

— 8 —
5 PROPER OPERATION
5-1 Installation of the needle
Caution
★Please make sure to turn the power switch OFF before installing or replacing the needle．
★Please pay attention for the fingers not to be wounded by the needlepoint．
(1) Loosen the needle set screw ○
1then，
Insert the new needle ○
2 until the
needle head is reached the end of the
hole of the needle bar○
3．
(2) Fasten the setting screw○
1withfacing
the needle groove○
4 to the front
5-2 Threading the upper thread
Caution
★Please make sure to turn the power switch off before threading the upper thread．
★Please thread the upper thread with referring to the below figures．

— 9 —
5-3 Winding the bobbin thread
★Please make sure to pull the upper thread out of the needle before winding the bobbin thread
(1) Turn the power switch ON．
(2) Pass through the thread from the thread stand①as shown on the right figure . then，wind the thread
to the empty bobbin②in the arrow mark “a” direction couple times and insert the bobbin②into the
bobbin winder③．
(3) Push the adjust lever④in the arrow mark “b” direction．
(4) Step on the gray color start foot switch⑤．The thread is kept winding to the Bobbin②while the gray
color start switch is stepping on．
(5) When the bobbin becomes full of the thread，the adjust lever③is returned to the original position．
(6) Step the gray foot switch to exit winding mode. .
(7) To wind the bobbin thread during the sewing operation，carry out above (2) to (7) procedure，then，
the bobbin winding is performed automatically．
For the details ,please refer to the instructions on the technical manual [Operation Panel].
5-4 Settling the bobbin
(1) Set the bobbin②into the bobbin case①．
(2) Pull the bobbin thread③into the slit④and pass the
thread through the thread hole⑤．
(3) At this time，pull the bobbin thread③then，check with
the bobbin②if it is rotaled to the arrow direction．if it
is not，set the bobbin②into the bobbin case①over
again to get the proper rotation.

— 10 —
5-5 Setting the bobbin case
(1) Set the needle bar to its highest position
then，open the cylinder cover①．
(2) Open the bobbin case latch lever②fully
then，fit it securely in the inner hook③．
[NOTE]Please pull the bobbin thread about
2.5mm out of the thread hole(NO.4)of the bobbin
case．
6 PROPER SEWING
6-1 Operation of the halt switch
If an incident such as a thread breakage，needle breakage and any other incidents are happened during the
sewing operation，please hit immediately the halt switch．The sewing machine running is stopped instantly．
Caution
★ Before start the sewing operation，please make sure the location of the halt switch and keep it in mind the
function and how to use it．
★ Please keep away the hands and the face from the needle during the sewing operation.
(1) Press the HALT switch ①，All
operations will stop，and the sewing
machine will stop at the needle UP
state without trimming the thread．
(2) Remove the cause of the abnormality．
(3) To continue sewing，turn the HALT
switch to the right．The switch will
be unlocked．(For the details ,please
refer to the instructions on the
technical manual [Operation Panel].)
(4) When the start switch②(left)is pressed
again，the operation will start ．
Caution
★ Depending on the shape of the work holder，the collision may be happened with the work holder and the
presser foot while the work holder is on the way back to the home position．For avoidance of this accident，
before starting the sewing operation . program the work holder returning home with the operation panel of
the control box to trace the sewing pattern．
6-2 The sewing operation
Caution
★ It is very dangerous to operate the sewing machine without the safety guards(Eye guard：belt cover，Link
cover，Finger guard etc．)．

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★ Please make sure to always operate the sewing machine with the safety guards．
★ Please do not put unnecessary articles except for the sewing operation on the tabletop．
★ Please keep the hands and the face away
from the needle．
(1) Turn the power switch①ON.
The collision may be happened with
the work holder and the presser foot
depending on the work holder shape
when the work holder is moved to
original position.
(2) When the start switch ②(left) is
pressed，the work holder③will go
down ,the operation will start .
For the details ,please refer to the instructions
on the technical manual [Operation Panel].
6-3 Adjustment of the thread tension
The thread tension between the upper and bosom thread should be balanced in the best condition．
When the upper thread tension is well balanced with the bobbin thread tension，both threads are interlocked
along the centerline of fabric layers as shown on the below figures．
NOTE Normally weaker bobbin thread tension brings better sewing quality．
So it is prefer to set bobbin thread tension first and then set upper thread tension．
(1) Bobbin thread tension
Adjust the bobbin thread tension
with the thread tension adjusting
screw ②on the bobbin case
①．The thread tension becomes
loose if turn the thread tension
adjusting screw②to the counter
clockwise，and the thread tension
becomes tight if turn it to the
clockwise．

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(2) Upper thread tension
Adjust the upper thread tension based on the bobbin thread tension．For this adjustment，turn the thread
tension adjusting nut③④．The upper tread tension becomes tight if turn the thread tension adjusting nut③
④to the clockwise，and the upper thread tension becomes loose if turns it to the counter clock wise．
7 STANDARDADJUSTMENT
Caution
★Please make sure to turn the power switch OFF before adjust the sewing machine．
★If the adjustment is required under the power switch is ON，keep the start foot switch away from the foot．
★Be careful not to be wounded by the needle or the inner hook point．
★Please make sure to put the safety guards(Eye guard，Belt guard，Link cover and finger guard etc．)back on
the original location after the sewing machine adjustment．
7-1 Adjustment of the needle bar position
(1) Turn the power switch OFF．
(2) Turn the sewing machine pulley by hand then，stop the needle bar①at the lowest position．
(3) Remove the rubber plug②from the face plate then，loosen the needle bar holder setscrew③．
(4) Move the needle bar①to the position where the needle bar timing mark A is matched to the needle bar
bushing bottom line④then，tighten the needle bar holder setscrew③．
NOTE：If the needle class is DP×5，match the needle bar timing mark B to the needle bar bushing bottom
line④．

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7-2 Adjustment of the position between the needle and the shuttle hook
(1) Turn the power switch OFF．
(2) Turn the sewing machine pulley by
hand then，move up the needle bar①
from the lowest position and stop it at
the position②where the needle bar
timing mark C is matched to the
needle bar bushing bottom line．
NOTE：If the needle class is DP×5，
match the needle bar timing mark D to
the needle bar bushing bottom line②．
(3) Open the cylinder cover②．
(4) Remove the bobbin case③．
(5) Turn the hook retainer lever⑤then，
remove the hook retainer⑥．
(6) Loosen the driver setscrew○9then，
move the driver(No.10)and adjust the
shuttle hook point⑦to be matched
with the center line⑧of the needle．
(7) After the adjustment，tighten the driver setscrew⑨and put the bobbin case④，the hook retainer⑥and
the hook retainer lever⑤back to the original location then close the cylinder cover⑨.
7-3 Adjustment of the clearance between the shuttle hook and the needle
(1) Please take the same procedures as above paragraph 7-2．from(1) to(5)．
(2) Loosen the outer hook setscrew③and turn the eccentric pin④so that the clearance between the shuttle
hook point and the needle becomes 0.05～0.1 mm．
(3) After the adjustment，securely tighten the outer hook setscrew③and put the hook retainer and the
bobbin case back to the original location then，close the cylinder cover⑤．

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7-4 Adjustment of the clearance between the driver and the needle
(1) Please take the same
procedures as above
paragraph 7-2．from(1)to(5)．
(2) Please make sure the
clearance between the shuttle
hook point and the needle has
been adjusted 0.05～0.1 mm
at above procedure 7-3
Adjustment of the clearance
between the shuttle hook and
the needle．
(3) Loosen the driver setscrew①and turn the eccentric pin②so that the clearance between the driver③and
the needle④can become 0．
(4) After the adjustment，securely tighten the driver setscrew①and put the hook retainer and the bobbin
case back to the original location then，close the cylinder cover⑤．
7-5 Adjustment of the thread guide
(1) Remove the E-shaped snap ring③which is engaging the movable knife②and the link①then，loosen
the setscrews④and remove the sliding plate(S) ⑤．
(2) Loosen the setscrews⑩and move the thread guide⑥to the position where the needle center line⑧
divides the needle groove⑦evenly and the rear side line⑨of the needle is aligned with the shoulder⑨
of the thread guide⑥．At this time，make sure that there is some clearance between the hook retainer
and the thread guide⑥at least the upper thread can be passed smoothly through it(standard clearance is
0.8mm)．If this clearance is too wide，it causes the trimming failure and if this clearance is too narrow，
it causes the sewing condition disturbance，the trimmed upper thread tail uneven and the locking up
the hook with the upper thread．
(3) After the adjustment，engage the link
①of the trimmer mechanism with the
movable knife②with the E shaped
snap ring③and put the sliding plate(S)
⑤back on the original location then，
tighten the setscrews④．At this time，
set the sliding plate(S) ⑤so that the
needle⑪can come down to the center
⑫of the needle hole of the needle
plate．

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7-6 Adjustment of the wiper
(1) Loosen the wiper setscrew③and adjust the wiper①to be positioned where the wiper①passes under
the needle point②with about 2 mm clearances right after the sewing machine is stopped running at the
needle upper position (the thread take up lever's highest position)．
[NOTE] When the presser foot position or the presser foot lift is changed, the wiper①may collide with the
presser foot④.in that case, please do not use the wiper○1 .If do not use the wiper ①,cancel the wiper
function with operation
7-7 Adjustment of the presser foot
[NOTE]The presser foot is a very important part to form the fine stitches．
It moves simultaneously with the needle and stabilize the needle penetrating area of the sewing material with
pressing down it，when the needle sticks into or pulls out the sewing material and prevent the skip stitch or
the over penetration happening．Please adjust the presser foot properly to the sewing materials with the
following instructions．
7-7.1 Adjustment of the presser foot position
[NOTE]Please always adjust the presser foot position when the thickness of the sewing material is changed．
(1) Turn the power switch OFF．
(2) Remove the face plate①and the link cover②．
(3) Turn the sewing machine pulley by hand and stop the needle bar③at the lowest position．At this time，
make sure the setscrew⑤of the eccentric cam④is positioned right beside the center line of the upper
shaft．This is the standard position of the eccentric cam○4．If the eccentric cam④is off from this
position , set it back to the standard position with the instructions on the paragraph[7-6-3．Adjustment
of the presser foot timing]in the following page．
(4) Turn the sewing machine pulley by hand and stop the needle at the highest position(this is also the
thread take up lever's highest position)．At this time，loosen the setscrew⑨of the upper feed lock
crank shaft⑧and adjust the center line of the bell crank⑥to be parallel with the presser foot bar⑦．