HIGHLEAD GC2698-2 User manual

HIGH LEAD
GC2698-2
Purchasing Dept
Copy
CYLINDER-BED UNISON FEED SEWING MACHINE
Instruction Manual
Parts Catalog
SHANGHAI HUIGONG N0.3 SEWING MACHINE FACTORY

CONTENTS
INSTRUCTION MANUAL
l, SAFETY .......................................................................................................................................................... 1
I) GENERAL SAFETY TIPS ............................................................................................................................... I
2) IMPORTANT POINTS FOR THE EMPLOYER.......................................................................... .. .... ... .......... 1
3) SERVICE AND TECH:NICAL PERSONNEL ................. .. ................................................................. .. ......... .. 1
4) DANGER TIPS ................................. .. ............ ... . ............ .. ................. .. ................. ... .. .. ...................................2
2, TESTING, TRANSPORT & STORAGE..........................................................................................................3
1) TIPS ON TESTING ........................... .. .. .............................. .. ............. ... .. ............ ... .................................... .. ..3
. .
2) TRANSPORT WITHIN THE CUSTOMER SITE ...........................................................................................3
3) STORAGE........................................................................................................................................................3
3, INSTALLATION & FIRSTOPERATION ..... ... ......... ... ................................................... ...... .. ........................3
1) ASSEMBLING THE BOBBIN STANDS ................................................................................ .. .............. .. ......3
2) FIRSTOPERATION................................................................... ... ......................... .. ........ ... ............ .. .. .............3
4, SPECIFICATIONS .............. .. ... .............. .. ....... ... ..............................................................................................3
5, PREPARATION................................................ .. ........................ .. ................................ .. .......... .. ........... .. ....... .. 4
1) ATTACHING THE NEEDLE...........................................................................................................................4
2) WINDING THE LOWERTHREAD, REGULATING THE TENSION OF THE THREAD ..........................4
3) TA.KING OUTTHE BOBBIN CAPSULE.......................................................................................................5
4) ROUTING THE UPPER THREAD .. . ... .. .............. .. .............................................................................. ... .. ......6
5) REGULATING THE TENSION OF THE THREAD.......................................................................................6
6, STITCH LENGTH ADJUSTING LEVERI REVERSE SEWING..................................................................7
7, MAINTENANCE & CARE................................................................................................. .. ......................... .. 7
1) MAINTENANCE AND CARE INTERVALS ..................................................................................................7
2) CLEANING............................................................................................................................................ .. ..... ... 7
3) GENERAL OILING .. ... .. .................. .. ...................... .. . .. ...... .. ... ............ .. ... .......................................................8
4) OILING THE HEAD .................................................................................................................................... .. 8
5) OILING THE ROTATING HOOK................ ... ...... ... .. .... .. ......... .. ........................ .... ........ ... . ... .. ... ... .................8
8, ADJUSTMENT ................................................................................................................................................8
1) TIPS FORADJUSTMENT.................................... .. .................. ... ......... .. ........................ .. ....... ... .... ... .. ............8
2) ABBREVIATIONS ...... ........... ... ............ ... ....... ... .. ...... ... ...................................... .. .............................. .. ...........9
3) POSITION OF THE FEED DOG.............................................................. .. .................................. .. ................,9
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4) NEEDLE HEIGHT(PRE-ADJUSTMEN'I).................... .. ....... .. ............. .. ... .. ... ...... .. .... ..... .. ... .... ... .. ................9
5) NEEDLE IN THE MIDDLE OF THE STITCHING HOLE .......................................................................... I0
6) PRESSER FOOT, WALKING FOOTAND FEED DOG SLIDING MOVEMENT...................................... II
7) HOOK POSITIONER, GRAB DISTANCE AND NEEDLE HEIGHT............................................ .. .. .... .. .. .. II
8) HYDRAULIC MOVEMENTOF THE WALKING FOOTAND PRESSER FOOT..................................... 12
9) PRESSER FOOT .. ... .. ................ .. ... ...... ... .. ........................................ .. ............... .. .......................................... 12
10) UPPER THREAD TENSION REGULATION...................... .. ................. .. ............................... .. ................... 13
11) THREAD TAKE-UP SPRING............................ .. .............................................. .. ... .. ................................ ... .. 13
12) BOBBIN WINDER ................................................................................................................................... ... 14
13) ADJUSTMENT OF PRESSER PRESSURE....... .... ........ ...... ... ............................... .. ........ .. ......................... 14
CATALOG
A, ARM BED AND ITS ACCESSORIES (I) ...................................................... .. .................................... .. .. 15
A, ARM BED AND ITS ACCESSORIES (2) ................................ .. . ... ...... ... .............. .... ........ .... ....... ... .... ..... I6
B, FEEDING AND FEED LIFTING & ROTATING HOOK SHAFT MECHANISM ........................ ... ..... .. .. .. 19
C, ARM SHAFTMECHANISM........................................................................................................................ 22
D, STITCH REGULATOR MECHANISM........................................................................................................24
E, PRESSER FOOT MECHANISM.......................................................... .. .............. .... ..................... ... .. ........... 26
F, NEEDLE BAR FEEDING MECHANISM ( 1) ............................................................ ...... ........ .... .. ........ .. 28
F, NEEDLE BAR FEEDING MECHANISM ( 2) .......................................................................................... 29
G, ACCESSORIES .... .... ............................ .. ...................................................... ... .. .... ....... ... .... ..... .. ... ..... .. .. .. ... .. 32
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1. SAFETY
1) GENERALSAFETYTIPS
Q) The machine should only be used after studying the accompanying instruction manual and only by
specially instructed operating
staff.
® Before bringing the machine into service read the safety tips and the instruction manual of the engine
manufacturer.
@ The machine may only be used according to their regulations and not without the accompan)'ing
protective fittings. All relevant safetyregulations should also be observed.
© When changing sewing tools (for example needle, presser foot, needle plate and bobbin winder),when
threading
up, when leaving the work place as well as during maintenance work the machine should be
unplugged or switched offat the main switch.
@ Daily maintenance work should only be carried out by specially trained personnel.
@ Repair work as well as special maintenance work should only be carried out by skilled workers or
specially trained
personnel.
(j) Working on the electrical equipment should only be carried out by qualified electricians.
® Working on active parts and equipment are not permitted.
® Only the spare parts provided by us should be used during repairs. We explicitly point out that the
spare
parts and accessories that are not supplied by us are also not tested or passed by us. The installation or
use
of such products can in certain circumstances reduce the predetermined quality of your machine. We take
no responsibility for damage caused by the use of non-original parts.
2) IMPORTANT POINTS FOR THE EMPLOYER
Q) This instruction manual is a component of the machine and must always be at the disposal of the
machine operators. It is necessary to read the manual before using the machine for the first time.
® Operation and maintenance personnel must be instructed on safety features of the machine and safe
I
working methods.
@ The employer nmst ensure that the machine is only used if it is in perfect condition
© The employer should make sure that only authorised persons are permitted to work on the machine.
@ Further information canbe obtained from the responsible sales office.
3) SERVICEAND TECHNICALPERSONNEL
(1) Service Personnel
Service personnel are responsible for the preparing, running and cleaning of the machine as well as the
elimination of faults in the sewing. Service personnel nmst observe the following points:
Q) to follow the safety guidelines in the instruction manual
® to avoid any type of work which may reduces the safety of the machine
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@ to wear tight-fitting clothes and avoid wearing jewellery, like necklaces and rings
© to report immediately changes in the machine which may reduce safety to the employer.
(2) Technical Personnel
Technical personnel are responsible for the lubrication, maintenance, repair and adjustments to the machine.
Technical personnel must observe the following points :
CD To follow safety guidelines in the instruction manual
® Before beginning maintenance work the main switch must be switched off and it must be ensured that it
will not be switched on again.
@ Working on active parts and equipment is not permitted.
© After repair and maintenance work the protective covering must be put back and the electric control box
must be closed.
4) DANGER TIPS (Fig.1)
CD During operation a space of Im in
front of and behind the machine should be
maintained so that unrestricted access is
possible.
® During sewing do not reach into
the needle area! Be careful of the danger
ofinjury
from the needle.
@ During operation
do not leave
objects lying
on the table or in the needle
plate tongue. Objects can get jammed or
knocked away. Danger
of injury will
result.
Fig.1
© With mechanically operated clutch motors without operation barriers, operators should wait for the
motor
to stop. Danger ofinjury will result.
@ Do not use the machine without the thread take-up cover I! Danger of injury from the movement ofthe
threaded will result.
® Do not use the machine without the finger guard 2! Danger of injury from the outward and upward
movement of the needle will result.
(J) Do not use the machine without the lifting arm cap 3!
Danger of injury from the rotating arm will result.
® Do not use the machine without the belt cover 4! Danger of injury from the rotating belt will result.
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2. TESTING, TRANSPORT & STORAGE
1) TIPS ON TESTING
The machine was tested before delivery according to the EN60204-3-1 editionl/86.
2) TRANSPORT WITHIN THE CUSTOMER SITE
Transport within the customer site is not the responsibility of the manufacturer. It should be ensured that
the machine is correctly transported.
3)STORAGE
The machine can be stored unused for up to 6 months. It should be protected against dirt and moisture.
If the machine is to be stored longer the individual parts, in particular the sliding plates, should be protected
against corrosion, with an oil film for example.
3. INSTALLATION & FIRST OPERATION
The machine should only be installed and started by qualified technical personnel. All the relevant safety
regulations should be observed. Suitable electricity supply must be available at the installation site (see
technical data} . It must be ensured that there is an even and solid ground surface as well as sufficient lighting at
the installation site.
1) ASSEMBLING THE BOBBIN STANDS
Place the bobbin stands in the drill hole in the table plate and fix them into place with the enclosed nuts.
2) FIRST OPERATION
Before the first operation check the electric cables in case of any possible damage.
<D Clean and oil the machine thoroughly
® Allow technical specialists to check whether the machine's motor may be connected to the available
main supply and whether it is properly plugged in. If there is any deviation, do not start the machine.
@ When the machine is running the balance wheel should be turned towards the operator. Otherwise let
technical specialists adjust the imtor.
4. SPECIFICATIONS
Max. Sewin2 Speed 2200rpm
Max. Stitch Lenlrth
6mm
Thread Take-up Lever Stroke 59.55mm
Needle Bar Stroke 33.4mm
Presser Foot Stroke
By Hand Ismm IByKnee I
13mm
Needle DPX35LR 18#-21#
Lubrication
SY&tem
Manual
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5. PREPARATION
CD All regulations and guidelines in this manual should be observed, with special attention being paid to
safety regulations.
® All preparation work may only be carried out by specially instructed personnel. Before all preparation
work the machine should be disconnected from the main electricity supply by switching off the main switch or
unplugging it
1) ATTACHING THE NEEDLE (Fig.2)
The choice of the right needle depends on the model of the machine as well as the thread and material to be
used.
CD Switch off the machine!
® Loosen needle-holding screw
@ Put the needle in as far as it will go (the long needle groove should point to the left)
© Tighten needle-holding screw I
Insert the needle until it bottoms, and
tighten the screw keeping the long
groove in the needle
fac ing to the left.
Insufficient insertion Wrong direction
Long groove Q
facing to the . :
left
__L __ ' _l_
x x
2) WINDING THE LOWER THREAD, REGULATING THE TENSION OF THE
THREAD (Fig.3)
CD Put an empty bobbin onto the bobbin shaft and thread the thread according to Fig 3
® Push the bobbin catch in the direction of the arrow
@ The bobbin is filled during the progress of the sewing.
© The bobbinet stops automatically when the bobbin is full .
@ The tension of the thread on the bobbin can be adjusted with knurl-screw 2.
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2
3) TAKING OUT THE BOBBIN CAPSULE (Fig.4)
Switch off the machine.
(1) Take the bobbin capsule out
CD Lift up handle and take out bobbin capsule. Thread the bobbin capsule.
\ . ® Thread the bobbin according to Fig 4
® The bobbin should point in the direction of the arrow when taking up the thread.
(2) Putting the bobbin capsule into place
Switch off the machine.
CD Pulling out Scm thread tail from the bobbin
Fig.3
® Hold the bobbin so that the bobbin thread is would in right direction and put it into the
hook
Fig.4
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4) ROUTING THE UPPER THREAD (Fig.5)
Switch off the machine.
Route the machine according to fig 5. The needle should be routed from the left (see arrow).
Fig. 5
5) REGULATING THE TENSION OF THE THREAD (Fig.6)
0 x
>~
~ Well balanced
stitch
-"SJ·"'-?
5::: · The upper thread is 100 tight or
lower thread is too loosP.
(1) Upperthread tension (Fig. 7)
Regulate the tension 1 so that the
stitches tie together in the sewing mate
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x
~~
~
The upper thread is too loose
or lower thread is too tiQht
Fig.6
Fig.7

(2) Lower thread tension (Fig. 8)
Lower thread tension can be adjusted by rotating
screw "A".
Thread tension spri1
Fig.8 Fig.9
6. STITCH · LENGTH ADJUSTING LEVER I REVERSE SEWING (Fig.9)
I) Adjust length ofstitches by turning the knurl nut I
2) Reverse Sewing
Push the knurl nut I up as far as it will go (position R)
7. MAINTENANCE & CARE
1) MAINTENANCE AND CARE INTERVALS
CD Cleaning - daily, more often with constant use .
® General oiling - twice weekly.
@ Oiling of the head -twice weekly .
© Oiling of the rotating hook - daily.
?)C LE ANING
Switch off the machine!
CD Clean the rotating hook and rotating hook area daily, more often with constant use.
® Bring the needle bar to its highest position and remove the free arm cap .
@
Take out the bobbin capsule and bobbin.
© Unscrew capsule holder piece.
@ Take out screw and lift up the rotating hook handle .
@
Turn the balance wheel until point stands at the same height as rotating hook point .
<1) Take out the lower capsule and clean the rotating hook path with petroleum.
® Put it back together in reverse order of the above . Make sure that the nose on the back of the capsule
holder piece meshes with groove.
® Unscrew rotating hook handle and put in the bobbin capsule with bobbin.
@) Draw back the free arm cap.
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3) GENERALOILING(Fig.to, Fig.11)
Use white spindle oil.
Oil all the bearing positions shown in Fig I0 and 11 twice weekly.
Danger of being crushed between the top part and the base!
4) OILING THE HEAD (Fig.12)
Switch off the machine!
Fig.11
<D Take off the cover and oil all the bearing and sliding
positions shown in fig 12 twice weekly .
® Then screw the cover back on.
Use white spindle oil.
5) OILING THE ROTATING HOOK (Fig.13)
Switch off the machine!
<D Take the bobbin capsule out and drip one or two
drops of oil into the rotating hook path (fig 13) once daily.
® Then put the bobbin capsule back in.
8. ADJUSTMENT
1) TIPS FOR ADJUSTMENT
Fh!.10
Fig.12
Fig.13
<D All adjustments in this manual apply to a completely assembled machine. Covers, which have to be
unscrewed and screwed on again for adjustment work are not mentioned in the text.
® The screws or nuts mentioned in brackets are to be loosened before adjustments and tightened again
afterwards.
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2) ABBREVIATIONS
UD -Upper deadlock
LO - Lower deadlock
3) POSITION OF THE FEED DOG (Fig.14)
The feed dog 1should be the same distance right and left from the needle plate.
Move the feed dog l (screws 2) according to the above rule.
x
Fig.14
4) NEEDLE HEIGH (PRE-ADJUSTMENT) (Fig.15)
When the needle bar is in lower position the distance between the needle bar and the needle plate
should be l 8.9mm.
Move needle bar 1(screw 2) according to the rule above without turning it to the side.
II
0
2
18.9mm
I t
Fig.15
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5) NEEDLE IN THE MIDDLE OF THE STITCHING WHOLE (Fig.16)
With the length of the stitch at 'O' the needle should pierce exactly in the middle of the needle plate
hole.
CD Unscrew the presser foot l and the walking foot 2.
® AdjU&t the stitch-length to 'O' and bring the needle bar to upper position.
@ Insert a new needle, loosen screws 3, 4, 5 & 6.
© Bring the needle immediately over the feed dog by turning the balance wheel.
@ Move the needle bar 7 according to the rule.
@ Tighten screws 3, 4 & 5.
CT) Bring stop 8 up to the needle bar area 7 and tighten screw 6.
Note: The needle
bar 7 in guide 9 and the needle rock frame should move easily.
0
-IO-
Fig.16

6) PRESSER FOOT, WALKING FOOT AND FEED DOG SLIDING MOVEMENT
(Fig.19)
When adjusting the maximum stitch-length and when the needle bar is in lower position, walking foot,
presser foot and feed dog should make no movement when operating the lever.
CD Adjust the maxinnun stitch length
® Loosen screw l only enough so that the feed lifting cam 2 turns round the shaft.
@ Bring the needle into lower position
© While retaining this position, first push the eccentricity of the feed lifting cam 2 upwards, observing the
above rule when operating the lever.
@ Tighten screws l.
RiRit ,;,-~
1 2
0.05-0.1
mm
5
4
0 Fig.19 Fig.20
7) HOOK POSITIONER, GRAB DISTANCE AND NEEDLE HEIGHT (Fig. 20)
When the stitch length is 'O' and the position of the hook positioner is l.Smm below the LD needle bar
then;
CD The grab point should stand at 'mid-needle' and the distance to the needle should be 0.05 - O. lnnn'
® The top edge of the eye of the needle should be O. Snnn below the grab point
I )Adjust the stitch length to 'O' and loosen screws 1&2 (screw 2 is on the back of the machine)
II) Bring the needle to lower position and push thel.Smm thick measuring plate well under the lower
needle bar bearing, bring the screw clip down to the measuring plate and screw tight
III) Remove the measuring plate and turn the balance wheel' until the screw clip lies at the needle bar. _
IV) Push the grab onto the grab shaft according to rule CD
V) Turn the grab according to rule ® (adjust the needle height afterwards if necessary)
VI) Bring the grab shaftbearing 3 towards the grab and tighten screw 2.
VII) Tighten screw 1making sure that the bevel wheel 4 is level with bearing 5.
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8) HYDRAUL IC MOVEMENT OF THE WALKING FOOT AND PRESSER FOOT
(Fig.19)
When the walking foot 3 is sitting on the needle plate the presser foot 6 and the needlepoint should reach
the needle plate at the same time in the presser foot hub.
CD Loosen nut 1.
® Push up bolts 2 and tighten nut 1.
@ Let the walking foot 3 rest on the needle plate.
© Loosen screws 4 far enough that the lifting eccentric 5 turns around.
@ Turn lifting eccentric 5 according to the rule
@ Tighten screws 4
<J) Do a test run.
4
Fig.19 Fig.20
9) PRESSER FOOT (Fig.20)
With the maximum presser foot adjustment and a stitch length of 'O ' the walking foot l and presser foot 2
should lift 8 mm above the needle plate when turning the balance wheel.
CD Adjust the walking foot to maximum and set the stitch length at 'O '.
® Lower walking foot l.
@ Turn the balance wheel until the presser foot 2 reaches it's highest point.
© Turn crank 3 (screws 4) according to the above rule.
® Do a test run.
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10) UPPER TH READ TENSION REGULATION (Fig.21)
When the walking foot is high the two tension plates should be at least O.Smm apart.
CD Pull the walking. foot up using the hand-lever.
® Position the pressure plate 1 behind the tension releasing plate 2 according to the above rule.
Note:
CD The distance of O.Smm is the minimum measurement and with thick types ofthread it can be over lnun.
® Effective tension should not put a strain on the pin 3.
0. 5mm
Fig.21
11) THREAD TAKE-UP SPRING (Fig.22)
The thread take-up spring should stop moving when the needlepoint pierces the material(== about 7mm of
spring movement)
The length of the thread take-up spring can deviate slightly up or down due to reasons of sewing technique .
Fig.22
\
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12) BOBBIN WINDER (Fig.23)
CD When the bobbin winder is activated the spindle should also be activated: When the bobbin winder is
deactivated the rubbing wheel 5 should not stand next to the drive wheel
® The bobbin winder should switch itself off when the filled quantity is still I mm from the edge of the
bobbin
I ) Push the drive wheel I (screws 2) according to rule I.
II ) Place abobbin on the bobbinet, thread up the bobbin and switch on the bobbin winder.
III) Tighten bolts 3 (screws 4) according to rule 2.
13) ADJUSTMENT OF PRESSER PRESSURE (Fig.24)
Fig.23
The material should imvestmothly even at top sewing speed. No pressure should show on the material .
Tum screw I according to the above rule.
1
Fig.24
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A.ARM BED AND ITS ACCESSORIES ( 1)
32 31
30
29 28
27 26
25
24 23
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A.ARM BED AND ITS ACCESSORIES ( 2)
44 45
\
--
--
--
42----
40
38 ------v
37--- . ___ Jl,
36~ ~
1· I ®
I
I
I
I
I
~
I
I
I
I
63 62 61 60 59 58 57
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48
55
56