HIGHLEAD HLK-3020 Instruction Manual

HLK-3020 （TH）
ELECTRONIC PATTERN SEWING MACHINE
Instruction Manual
Parts Catalog
S
HANGHAI BIAOZHUN HAILING SEWING MACHINERY CO., LTD
.

CONTENTS
FOR YOUR SAFETY………………………………………………………………1
USE OF THE ENVIRONMENT……………………………………………………2
1. STRUCTURE OF HLK-3020(TH) SEWING MACHINE……………………3
2. SPECIFICATION………………………………………………………………3
3. INSTALLATION…………………………………………………………………4
3-1.Installation of the control box…………………………………………………4
3-2.Installation of the power switch………………………………………………4
3-3.Connection of the foot switch…………………………………………………5
3-4.Installation of the sewing machine head………………………………………5
3-5.Connection of electric cables…………………………………………………6
3-6.Installation of spool stand………………………………………………………7
4. OILING…………………………………………………………………………8
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
6. PROPER SEWING……………………………………………………………10
6-1.Operation of the emergency switch…………………………………………10
6-2.The sewing operation…………………………………………………………10
6-3.Adjustment of the thread tension……………………………………………11
6-4.Removing and inserting the bobbin…………………………………………11
7. ADJUSTMENT OF SEWING MACHINE……………………………………11
7-1.Adjusting of needle bar height………………………………………………12
7-2.Adjusting of distance between needle and shuttle hook point……………12
7-3.Adjustment of the clearance between the hook driver and the needle……12
7-4.Adjustment of the presser foot………………………………………………13
7-5.Adjustment of the mechanical home position………………………………14
7-6.Adjustment of x and y timing belt tension…………………………………15
8. MAINTENANCE………………………………………………………………15
8-1.Daily maintenance……………………………………………………………15
8-2.Drain of waste oil………………………………………………………………15
PARTS CATALOG………………………………………………………………16

— 1 —
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 Biaozhun Hailing Sewing Machinery Corp. 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．
CAUTION is 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
bobbin clearing，oiling etc．switch off main
p
ower switch．
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．

— 2 —
USE OFTHE ENVIRONMENT
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．

— 3 —
1. STRUCTURE OF HLK-3020(TH) SEWING MACHINE
2. SPECIFICATION
Sewing area：X-Direction(left／right) 300mm
Y-Direction(forward／backward) 200mm
Maximum sewing speed：800 rpm
Sewing speed：variable from 100 to 800 rpm
Stitch length：0.1 to 12.7mm
Stitch type：Single needle lock stitch

— 4 —
Needle bar stroke ：56mm
Thread take up lever stroke：96mm
Class of needle：DY×3 26# (the standard specification)
Presser foot lift：20 mm
Presser foot alternation：Variable from 4mm to 10mm
Work holder lift：30mm
Hook：Large size shuttle hook
Lubrication system: Manual oiling and replenishment with the oil wicks from the oil tanks
Lubrication oil：SF sewing machine oil
X—Y drive system：Stepping motor, timing belt and linear guide rail drive
Intermittent or continuous feeding
Machine dimension：1,200mm (W) × 1,100mm (L) × 1,300mm (H)
NetWeight: 130kgs
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 electric
wiring．
★ If any damage or fault is found on the machine at the installation，please do not operate until it be
repaired．
★ Please do not operate the sewing machine with excessive modifications from the standard
specification.
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．

— 5 —
(1) Mount the power switch①with the wood
screw②underneath the table as shown on
the figure．
(2) Fix the electric cords with the staples③
underneath the table．
(3) Connect the plug⑧of the power switch①
to the control box⑦．
(4) Attach the power plug⑤to another end of
the power switch cord④．
3-3.Connection of the foot switch
Connect the foot switch⑥to the relevant socket (the middle socket) on control box⑦.The foot switch is
enclosed in the accessory box.
3-4.Installation of the sewing machine head
Caution
★ For the safety，lift and move the sewing machine heads with powerful lifting equipment under monitor of
more than two people.
(1) Install the stand and put tabletop①on it.
(2) Take out the support blocks③from accessory box and place them on the transoms of stand.
(3) Put the sewing machine head⑧
into the cut-out of machine head
and make sure the four feet of
machine heads are seating on
the support blocks.
(4) Set machine head onto stand
with Allen screws⑤, and
washers from accessory box as
following figure shows.
(5) Adjust the Allen screws②to
raise the table top up onto the
bottom of big slide plate⑨of
machine head. Connect the
tabletop and stand with bolts⑦.
(6) Install oil pan ③on the
transoms of stand with screws
④.

— 6 —
3-5.Connection of electric cables
（1）Connection diagram
（2）Back of control box and sockets diagram.
SOCKET NAME FOR CONNECTING TO
X4 Spindle motor power
X5 Spindle motor signal
X6 RS-232C(Optional)
X7 Operation panel
X8 Foot switch pedal
X9 Solenoid output
X10 RS-232C(Optional)
X11 Control signal 1
X12 Extension I/0
X13 Control signal 2
X14 Y stepping motor
X15 X Stepping motor
G Ground wire

— 7 —
（3）Circuit board diagram.
3-6.Installation of spool stand
（1）Assemble the stand parts (packed in accessory box) as following figure shows.
（2）Fit spool stand ①into the hole on the upper right corner of table top.
（3）Fix the thread stand①firmly from the rear side of the table by tightening the nut○4 and the washers②, ③．
Control signal
1 ，X11
Control signal
2 ，X9
Thread wiper
solenoid
Inner foot
solenoid
Thread release
solenoid
X shaft
detecto
r
Y Shaft
detecto
r
Emergency
switch
Pneumatic
inner foot Pneumatic
presser frame Trimmer
solenoid
Presser frame
solenoid

— 8 —
★ Turn of power witch before oiling。
★ Oil the machine sufficiently before first operation of a brand new machine or after long time stop.
★Please
b
e sure to turn the
p
ower switch OFF before threadin
g
the u
pp
er thread．
4．OILING
NOTE : Please use high quality white
SF machining oil:
Pour some oil into red marked
oil holes as the figure on the right
shows．
5 . PROPER OPERATION
5-1.Installation of the needle
Caution
★Please be 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 screw①and then
insert a new needle②till the needle
head reach the end of the hole of the
needle bar③．
(2) Make the needle groove④face to the
front and fasten the setting screw①then.
5-2.Threading the upper thread
CAUTION

— 9 —
★ Please refer to the figure on the right and thread
the upper thread as the figure shows.
5-3.Winding the bobbin thread
★Please be sure to pull the upper thread out of the needle before winding the bobbin thread.
(1) Turn the power switch ON．
(2) Entering winding model with refering to the Instruction manual of control systerm.
(3) Lead thread through thread stand④and thread guard as shown on the below figure and then wind
the thread to the empty bobbin⑤in the arrow mark “a” direction couple times and insert the bobbin
⑤into the bobbin winder⑥．
(4) Push the winder lever⑦in the
arrow mark “b” direction．
(5) Step on the gray color start
foot switch⑧, the sewing
machine runs and start the
winding.
(6) When the bobbin thread is
full，the winder lever⑥will
return to the original position
automaticly and the winding
will stop．
(7) Step on the gray foot switch
to stop the sewing machine.

— 10 —
6. PROPER SEWING
6-1.Operation of the emergency switch
If an incident such as thread breakage，needle breakage and any other accident happen during the sewing
operation，please hit the emergency switch immediately．The sewing machine will be stopped instantly．
Caution
★ Before start the sewing operation，please check the location of the emergency switch and keep in mind the
function and operation method of it．
★ Please keep hands and face away from the
needle during sewing operation.
(1) Press the Emergency switch①，All
operations will stop．
(2) Remove the cause of the abnormality．
(3) To release the swith, turn the
Emergency switch clockwise．
(4) To continue sewing, step on the foot
switch pedal②(left)．
(5) To stop sewing, please refer to the
Instruction manual of control system.
6-2.The sewing operation
★ Do not operate the sewing machine if without the safety guards(Eye guard：belt cover，
Link cover，Finger guard etc．)．
★ Please do not put any unnecessary articles on the tabletop during sewing operation．
★ Please keep hands and the face away from the needle．
(1) Turn the power switch①ON. Touch screen will
shows Sewing Data Setting interface.
Attention: On sewing model, sewing speed is
adjustable within limit as shown on Sewing data
setting interface.
(2) When the start switch②(left) is pressed，the presser
frame③will go down and sewing will start .
Caution

— 11 —
★ Power off before adjustment.
★ Keep foot away from operation pedal in the case of must have power on during adjustment,。
★ Mind your hand from needle and hook point.
★ All safety guards(Eye guard：belt cover，Link cover，Finger guard etc．) must be reinstalled
properly after adjustment.
6-3.Adjustment of the thread tension
The thread tension between the upper and bottom thread should be balanced．
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: Thread tension should be adjusted to fit different fabrics.
（1）Adjusting of bobbin thread
tension.
Loosen screw①adjust bobbin
thread tension with thread tension
adjusting screw ②.Turn the screw
clockwise to increase the tension,
turn the screw counterclockwise to
decrease thread tension.
（2）Adjusting of upper thread
tension.
Adjust the upper thread tension
according to the bobbin thread tension．Turn the thread tension adjusting nut③clockwise to increase the thread
tension, or turn it counterclockwise to decrease the tension．
6-4.Removing and Inserting the bobbin
(1) Removing: Open the shuttle race cap and the bobbin case, then take out the bobbin.
(2) Installation: Install the bobbin in the bobbin case, make sure the bobbin will rotate couterclockwise
and then pull the end of thread out.
7. ADJUSTMENT OF SEWING MACHINE
Caution

— 12 —
7-1.Adjusting of needle bar height
When needle bar touch shuttle hook point②，the distance between top of the needle hole and shuttle hook
point should be about 2.5mm. To adjust height of needle bar.
（1） Loosen screw③.
（2） Adjusting the height
of needle bar ④.
（3） Tighten screw ③.
7-2.Adjusting of distance between needle and shuttle hook point
The correct distance
between needle and hook
point is about 0.25-0.35mm.
（1）Loosen screw ③.
（2）Move shuttle race ④
to along its shaft to correct
position.
（3）Tighten screw ③.
7-3.Adjustment of the clearance between the hook driver and the needle
Proper clearance between the needle①and hook driver②is 0-0.05mm(with standdard needle DY×3 26#).
(1) Loosen screw③and④.
(2) Move hook drive shaft⑤to a proper position.
(3) Tighten screw③and④.

— 13 —
7-4.Adjustment of the presser foot
[NOTE]The presser foot is a very important part for performing fine stitches．
It moves simultaneously with the needle. When the needle sticks into or pulls out the sewing material,
the inner foot must press down on sewing material and stabilize the needle penetrating area to prevent the
skip stitch or the over penetration happening．Please adjust the presser foot properly to the sewing materials
with the following instructions．
7-4-1.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 plate and cover．
(3) Turn hand wheel to move Crank ①to left end, loosen set screw ④to disconnect air cylinder link
rod ③from knee lifter lever②.
（4）Pull up presser bar ⑤and presser bar clamp ⑥, put a block with 12.7mm height as following figure
shows as positioning.
（5）Fix the drive shaft ⑦, tighten set screw ⑧，reinstall the knee lifter lever ②and other parts mentioned
in above item (3) to their original positions.
（6）Loosen the presser foot bar setscrew⑨and move the presser foot⑩up and down to adjust the height
of presser foot to proper position.
[NOTE]The lower position of the presser foot，the more effective for preventing skip stitches．However，if the
presser foot press the sewing material too hard，the movement of the presser foot mechanism will
make noise, the presser foot will stays longer holding sewing material，the upper thread tension
becomes loose and maybe the sewing pattern will out of shape. So the height of presser foot must be
adjusted to proper position according to different thickness of fabrics.
If the thickness of fabric changes frequently, better to adjust the height of presser foot in easiest way:
Loosen screw ⑨
and adjust the
height of the inner
presser foot⑩.
7-4-2.Adjustment of the
presserfootlift
during the sewing
Loosen bolt ○
11 ，
move it up or down to
adjust the presser foot
lift to a proper
position and tight bolt
○
11 then.

— 14 —
7-5.Adjustment of the mechanical home position
[NOTE]The mechanical home position is set at the center of the sewing area as default．
Note: The second mechanical home position can be set with referring to Operation Manual of control system.
7-5-1.Shifting the mechanical home position along X direction
(1) Loosen the set screws①(2 pieces) of X-detector plate ③, Move the detector plate ③to the right to
move the mechanical home position towards B or moved the plate to the left to move mechanical
home position towards A.
(2) Tighten the set screws①securely after adjustment.
7-5-2.Shifting the mechanical home position along Y direction
(1) Loosen the setscrew⑤of Y-detector plate ⑥．
(2) Move the detector plate ⑥forward to move the mechanical home position towards C or moved the
plate to backward to move mechanical home position towards D.
(3) Tighten the screw⑤securely after adjustment．
[NOTE] When the original mechanical home position is shifted．Please check the clearance between the X
detector plate and the X detector．This clearance should be set within the range of 1.0—1.5 mm．

— 15 —
7-6.Adjustment of X and Y timing belt tension
（1）Remove the Left cover (big) and Right cover (big) from machine head.
（2）Loosen nut②and set screws of pulley base③.
（3）Tighten or loosen screw ①to increase or decrease tension of X Timing belt. Tighten or loosen screw ⑦
to adjust tension of X Timing belt (short).
（4）Loosen screw⑤，（Adjust by both left and right side independently）tighten screw ④will increase tension
of Y timing belt，tighten screw⑥will increase tension of Y timing belt (short).
（5）Make sure all set screws and nuts have been fully tightened after the adjustment.
Note：Too weak tension of the timing belts will cause inaccurate positioning of needle and bad feeding, too
strong tension of timing belts will reduce the longevity of the belts.
8. MAINTENANCE
Caution
★Please be sure to turn the power switch OFF before clean up the sewing machine．
★Before or after the sewing operation，please clean up the sewing machine and oil the marked oil holes with
proper volume of suitable sewing machine oil.
8-1.Daily maintenance.
(1) Turn OFF the main power switch．
(2) Remove the dust and thread waste sticking around the threading parts or the shuttle hook area．
(3) Oil the marked oil holes with proper volume of suitable sewing machine oil.
8-2.Drain of waste oil
Check oil tank and drain the waste oil regularly.

A.ARM BED AND ITS ACCESSORIES
— 16 —— 16 —

Fig.
No. Part No. Description Pcs. Remarks
A01 HBB3252072 Arm and bed 1
A02 H6623C8001 Screw 6
A03 HBB3265081 Big slide plate 1
A04 H6675F8001 Screw 2
A05 HBB3266081 Needle plate 1
A06 H6675B8001 Retainer plate 1
A07 HBB3274081 Guide plate 1
A08 H6671B8001 Hinge 1
A09 HA104G0654 Screw 4
A10 HM015B8001 Guide plate base 1
A11 H9010B8001 Screw 2 SM1/4(40)×2.5
A12 H9011B8001 Needle bar bushing 1
A13 H7218B8001 Presser bar bushing 1
A14 H7239D8001 Screw 1 SM1/4(40)×3.5
A15 H9009B8001 Needle bar bushing 1
A16 H9017B8001 Needle bar guard 1
A17 H9018B8001 Needle bar guard plate 1
A18 HA111G0683 Screw 2
A19 HBB3257081 Arm side cover 1
A20 HA300B2170 Screw 1
A21 HZ11040100 Screw 29 M4×10
A22 HBB3271081 Right cover (big) 1
A23 HBB3268081 Left cover (big) 1
A24 HBB3262081 Belt guide (L) 1
A25 HBB3276081 Belt guide (M) 1
A26 HBB3263081 Belt guide (R) 1
A27 HBB3275081 Stud screw for belt guide 1
A28 HBB3260081 Supporting rod for right cover 1
A29 H415040100 Screw 1 M4×10
A30 H7215B8001 Oil pipe 1
A31 H7216B8001 Oil wick 3
A32 H7244B8001 Tension releasing disc 1
A33 H7246B8001 Thread guide 1
A34 HA115B0702 Tension nut 1
A35 H7241B8001 Tension spring 1
A36 H7248B8001 Washer 2
A37 H7249B8001 Felt 2
A38 H7250B8001 Damping plate 1
A39 H7251B8001 Tension screw stud 1
A40 HA710N0683 Temsopm nut 1 SM15/64(28)
A41 H7253B8001 Thread take-up spring 1
A42 H7254B8001 Spring 1
A43 H7255B8001 Thread take-up spring guide plate 1
A.ARM BED AND ITS ACCESSORIES
— 17 —

Fig.
No. Part No. Description Pcs. Remarks
A44 H3410C301K Screw 1 SM9/64(40)×6.5
A45 H7257B8001 Screw 1
A46 H7258B8001 Nut 1 SM1/8(44)
A47 H7259B8001 Tension spring 1
A48 H7260B8001 Tension disc 1
A49 H7261B8001 Thread tension regulator complete base 1
A50 HA7311CC06 Screw 1 SM9/64(40)×6
A51 H7262B8001 Thread guide 1
A52 H3410C301K Screw 1
A53 H9016B8001 Face plate 1
A54 H7238B8001 Screw 2 SM15/64(28)×22
A55 H3410C301K Screw 1 SM11/64(40)×9
A56 H7240B8001 Thread guide 1
A57 H7242B8001 Tension screw stud 1
A58 HA310B0705 Tension disc 1
A59 H7241B8001 Tension spring 1
A60 HA115B0702 Nut 1
A61 HA111G0683 Screw 2 SM11/64(40)×12
A62 H7243B8001 Thread tension regulator complete base 1
A63 H2010J0066 Tension nut 1 SM9/32(28)
A64 H7245B8001 Screw 1 SM3/16(28)
A65 HA300B2100 Rubber plug 1
A66 HBB3277081 Thread take-up cover 1
A67 HA300B0170 Screw 1 SM11/64(40)
A.ARM BED AND ITS ACCESSORIES
— 18 —