ZOJE ZJ2628-1 User manual

ZJ2628-1
CYLINDER BED COMPOUND FEED LOCKSTITCH
SEWING MACHINE
OPERATING INSTRUCTIONS
From the library of: Superior Sewing Machine & Supply LLC

I I. MAIN SPECIFICATION
Sewing speed
Stitch length
Needle
bar stroke
Presserfoot
lift
2000s .p. m.
0 - 5mm
33. 2m.m
7mm {Manual)
14mm (Knee)
12. INSTALL THE MOTOR ( Fig.l)
Align Motor Pulley Groove (B) and Balance
Wheel Groove (A) by moving the Motor(C) leftward
or rightward.
Needle
Lubrication
Reverse feeding mechanism
DP X 17 18 " -2t
1
Automatic
Have
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13. CONNECTTHE CLUTCHLEVERWITH THE PEDAL ( Fig.2 )
1. The optimum tilt angle of Pedal (A) is
approximately
15 degree.
2. Adjust Clutch Cover (
D) so that Clutch Lever
(C) and Draw Bar (B ) run the line.
3.The balance wheel should rotate counter-
clockwise when viewed from the outside of Balance
Wheel (G). The direction
of the motor pulley rotation
can be reversed by reversing (turning over 180 degree)
the power plug
of the motor.
4. Adjust
the tension of V-belt (F) by turning
Motor Vertical Position Screw (E ). The proper tension
of the V-belt is a slack of 10-20mm when the belt is
depressed at the center
of the belt byfinger.
14. PREPARATION AND LUBRICATION ( Fig.3)
1) Cleaning the machine
Before leaving the factory, the machine parts
are
coated with rust-preventive grease, which may be
hardened and contaminated by dust during storage and
shipment. This grease must be removed with gasoline.
2) Examination
Although
each machine is confirmed strictly and
test before leaving the factory,
the machine parts may
be loose or deformed after long distance transportation
with jolt. A thorough examination must
be performed
after cleaning
the machine. Tum the balance wheel to
see if there is running obstruction, parts collision,
uneven resistance
or abnormal noise. If these exist,
adjustment must
be made accordingly before run in
operation.
3) Oiling
0) Required amount of oil
Line (A)
on the oil reservoir: Max . oil level
Line (B)
on the oil reservoir: Min . oil level
If oil level goes down under Line (B) , oil cannot
be distributed to each part of the machine, thus
causing the parts a seizure.
(2) Replenishing
Always use
only No . l8 special machine oil for
high speed sewing . Be sure to replenish oil to Line (A)
before starting
ope ra tion.
(3) Replacing oil
To replace oil,
remove Screw ( C) to dr ain oil.
After completely draining off oil , clean the oil
reservoir and securely tighten Screw (C), then fill the
reservoir with fresh oil
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. , 5. REPLACE NEEDLE ( Fig .4 )
Turn the balance wheel to lift needle bar to the
upper end
of its stroke. Loosen Needle Clamp Screw
(B) while keeping the long groove of the needle(C)
leftward, fully insert the needle shank up to the
bottom
of the needle socket. Then tighten Needle
Clamp Screw (B).
I 6.RUN IN OPERATION (Fig.S)
Run-in operation is required for a new sewing
machine,
or a sewing machine left out of operation for
a considerable length
of time.
1) Remove Rubber Plugs (A) on the top of the
arm and replenish sufficient amount
of oil, and also to
the red oil bole (D).
2) Lift Presser Foot (B).
3) Run the machine at a lo~ speed
(1000-1500spm) to check oil distributing condition
through Oil Check Wmdow (C).
4) Perform run- in operation at 1000-1500spm for
30 minutes. After a lapse of one month of service
during which the working speedis increased gradually
and the machine runs sufficiently well, the high speed
2000spm can be adopted according to the nature of the
work.
11.THREADING ( Fig.6 )
To thread the needle thread, raise needle bar to the
upper end
of its stroke, lead the thread from spool and
perform threading as shown in Fig.6. To draw the
bobbin thread. hold the end
of the needle thread and
turn the balance wheel to lower the needle bar and
2
@,- - -.- -- - -
then to lift it to its highest position. Pull the needle
thread and the bobbin thread is
dr awn up. Put the ends
of needle thread and bobbin thread frontward under
presser foot.
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I s. WINDINGADJU STM ENT <Fig.7 )
1) The wound bobbin thread should be neat and
tight,
if not, adjust the winding tension by turning
Tension Stud
Nut (A) of bobbin winder tension
bracket.
Note: nylon or polyester thread should be
wound
with little tension, otherwise, Bobbin (D) might break
or deform.
2) When
the wound thread la yer does not present
a cylindrical shape as shown
in Fig.7 (a), loosen Set
Screw (B) of bobbin winder tension bracket and slide
Bracket (C) leftward
or rightward. If thread is wound
as shown in Fig.7 (b), move the bracket rightward, but
if thread is wound as shown in Fig.7 (c), move the
-bracket leftward.
After adequately positioning the bracket, tighten
Set Screw (B).
3)
Do not overfill the bobbin. The optimum
length
of thread will fill about 80% of bobbin capacity.
This
can be adjusted by adjusting Screw (E) of bobbin
winder stop latch.
19.SET STITCH LENGTH AND REVERSE FEEDING ( Fig.8 )
1) Stitch length can be set by turning Dial (A).
2) The figures on face ( B) of dial show stitch
length in mm.
3) Reverse feeding starts when Reverse Feed
Lever (C) is depressed, and the machine will feed
forward again
if Reverse Feed Lever (C) is released.
3
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I-
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Ito. ADJUST THREAD TENSION (Fig.9, to,tt)
Generally, the thread tension is to be adjusted
according
to the sewing materials and sewing
conditions.
Fig.9 shows different stitch forms.
Normal stitch
form should
be as shown in Fig.9 (a). When
abnormal stitches cause puckering and thread
break-age, the tension
of needle thread and bobbin
thread must be adjusted accordingly.
In case needle thread tension is too strong or
bobbin thread tension is too weak, as shown in Fig.9
(b ), turn the thumb nut counterclockwise to decrease
the needle thread tension,
or tighten the tension spring
regulating
screw of bobbin case to increase the bobbin
thread tension (See Fig. 10,11)
In case needle thread tension is too weak or
bobbin thread tension is too strong, as shown in Fig.9
(c
), tum the thumb nut clockwise to increase the
needle thread tension, or loosen the tension spring
regulating
screw of bobbin case to decrease the
bobbin thread tension.
I tt. ADJUST THREAD TAKE-UP SPRING (Fig.t2)
!.Adjustment of the thr ead take-up spring stroke
Loosen the stopper
screw (B) and move the
regulating ring (C) leftwards to decrease the stroke of
the thread take-up spring, or move the regulating ring
(C) rightwards to increase the stroke. After the
adjustment, tighten the
screw (B ).
2.Adjustment
of the thread take-up spring tension
Loosen the nut (D) and screw
(E ) and turn the
regulating screw (F) clockwise to decrease the tension
of the thread take-up spring, or turn the regulating
screw (F) counterclockwise to increase the tension.
Then tighten the
nut (D ) and the screw (E) .
4
~
a
b
c
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j 12 .TIME NEEDLE MOT IO N TO HOOK MOTION (Fig. 13 ,14)
1. Adjusting the height of the needle bar (Fig. 13 )
When the needle bar is at its highest point,
normally the measurement between the surface
of the
needle plate and the upper end
of the needle eye is
20mm.
2. Time needle motion to hook motion
Before adjustment, set stitch length to minimum,
then turn the balance wheel toward you until the
needle bar reaches its lowest point. Continue turning
and allow the needle
bar to raise about 2mm while on
its upward stroke. With needle bar in this position, the
hook point (A) should be at the center
of the
needle(B), and normally the measurement between
the
hook point and the upper end of the needle eye (C)
should be 2-2.4mm, further the clearance between the
hook point and the needle hoUow should be about
0.05 to O. lmm .
113. REPLACE ROTATING HOOK (Fig.15)
1) Lift needle bar to the highest position of its
stroke and remove needle and bobbin case
2) Loosen screw of needle plate (A), take down the
needle plate (A)
3) Loosen Screw (B) of needle plate bracket (C) ,
then loosen screw (D) and
lift needle plate bracket (C),
take down rotating hook.
Note: The clearance between convex surface
of hook
positioner (E) and the side face
of the rotating hook
should be at 0.5 -0 . 7mm , if not, loosen screw (B) and
adjust the clearance by moving needle plate bracket
(C).
2.4mrn
0.05- O.lmm
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lt4.ADJUST PRESSER FOOT (Fig.16,1 7)
1. Liftadjustment of presserfoot (Fig.l6)
The normal height of the presser foot (A) should be
8mm , yet it can be adjusted, if necessary, according to
actual requirement. Loosen the pressure regulating
screw(
C) and lift the presser bar lifter to raise the
presser foot, loosen
the screw (D ) and move presser
bar upwards and downwards to change the lift of the
presser foot.
NOTE : The changeable lift of the presser foot (A)
will result
in the alternate movement height of the
presser foot (A) and the walking foot (B ), therefore,
adjustment must
be made to it accordingly. See
procedure 3 stated below for proper wa y.
2. Pressure adjustme nt of the press er foot (A)(Fi.g.l6)
Turn pressure regulating screw (
C) clockwise to
increase the pressure
of the presser foot (A ), and
counterclockwise to decrease it if y ou desire.
3. Adjus
tment of the alternate vibrating height of the
presser foot (A) and the walking foot (B ) (Fig. l6)
Th e presser foot ( A) and tlie walking foot (B)
vibrate alternately with equal height when machine is
in operation,
but it can be adjusted according to actual
requirements. To incre
as e vibrating height of the
walking foot (B) and decrease vibrating height of the
presser foot (A ), adjust as follows: Down the presser
bar lifter and turn balance wheel until the presser foot
(A) is slightly separate from the needle plate, loosen
screw (E ) and depress the pr es ser foot (A ) to reach
needle plate and then tighten the screw (E ). To
decrease vibrating heighl
of the walking foot (B) and
increase vibrating height of the presser foot (A): Turn
balance wheel until the walking foot (B ) is slightly
separate
from the needle plate, loosen screw (E) and
depress the walking foot (B) to reach needle plate and
then tighten the screw
(E ).
4. Movement height adjustment
of presser foot and
walking foot (Fig17)
The thickness
of the material sewn should control
the height
of the lift of the presser foot and walking
foot. The
lift should be just enough for clearance of
the material. To adjust, loosen the net (H) move the
crank rod upwards to increase the up and down
movement, and downwards to decrease it , then tighten
nut (H ).
5. Time walkingfoot (B) to needle
(F igl6 )
This is the normal timing when turn the balance
wheel toward y
ou , after lowering the presser bar lifter,
the walking
foot (B ) should reach the feeder earlier
than the needle eye comes
to , and when the needle
raises, the walking foot (B ) should leave the feeder
after the needle
eye has left the feeder. This is due the
reason that the walking foot (B ) must tightly ho ld the
goods while the needle is passing the goods for
avoiding irregular stitches. To adjust this, loosen the
two screws (G) and adjust the rotating position of the
cam (F) faster or slower as may be desired, and
tighten the screws (G).
6
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I15.ADJUST FEED DOG (Fig.18,19,20,21,22)
!.Adjustment of the position of feed dog (Fig.l8,19)
Generally, the position
of the feed dog should be:
When minimizing the stitch length, the center
of the
needle hole
on the Feed Dog (A) should align the
center
of the Needle Plate (B). If necessary, adjust as
follow:(Fig.l8)
l ) Minimize stitch length
2) Loosen the Screw (D)
of the Feed Rock
Shaft Crank (Right) and move the two Screw (E)of
Crank.(Fig.l9)
3 ) Turn Feed Rock Shaft(C) and align the
center
of the Needle Hole on the feed dog and the
center
of the Needle Plate (B).
4) After the adjustment, be sure to tighten the
sc r ew (D),(E).
5) The standard height
of feed dog (A) is that the
top
of feed dog is 1.2mm above needle plate
surface.(Fig.20)
2. Relative position adjustment between needle and
the needle hole inthe feed dog. (Fig.21)
Make sure that needle
can be descended to the
center
of the needle hole, if not, adjust it as follows:
1) Remove the arm side cover and loosen the
screw (A).
2) Holding the needle bar and move it to
the
center of the needle hole in the feed dog, the tighten
screw (A) and replace the arm side cover
3. Timefeed motion to needle motion (Fig.22)
The standard timing
of feed motion to needle
motion is that the feed dog starts moving forward
when the needlepoint reaches the needle plate surface.
If feed motion is not timed to needle motion, adjust
as follows:
1) Remove the arm side cover
and loosen the screw
(A), (D)
of the feed and feed lifting eccentric.
2) Holding feed and feed lifting eccentric (B) and
turn balance wheel slowly until the reference hole(C)
on the feed and feed lifting eccentric aligns with mark
(F).
When adjusting, the clearance between feed and
feed lifting eccentric (B) and feed link lever (E)
should be 0.3-0.Smm.
After the adjustment, be sure to tighten the screw
(A), (D).
7
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l t6. REGULAR CLEANING (Fig.23,24)
1. Cleaning feed dog
Remove the throat plate and clear off the dust and
lint between the feed and teeth slots.
2.Cleaning rotating hook
Swing out
the machine head and clean the hook.
Wipe the bobbin case with soft
cloth .
8
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PARTS LIST
9
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1. ARM BED AND ITS ACCESSORIES
10
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1. ARM BED AND ITSACCESSORIES
No. Ref. No. Description Pes Remarks
l.
05-01-001A2 Arm
1
2.
13-0l-001B2
Arm bed
1
3.
13-01-002 Trade mark plate 1
4.
GB827-86
Trade mark plate rivet 2
5. 05-01-003
Face plate 1
6. 05-
01-004 Set screw 1
7.
05-0 1-005 Knock pin 1
8.
05-01-006 Thread guide (Up) 1
9.
22Tl-003C5
Thread guide (Middle) 1
10. 05-01-013
Thread guide (Lower) 1
11.
22Tl-003C6
Set screw 3
12. 05-01-
014
Arm side cover
1
13. 05-01-015
Gasket for arm side cover 1
14.
72Tl-017
Set screw
8
15.
12Hl-007Cl
Oil check window
1
16.
12Hl-007C2
0 - ring 1
-17 . 22Tl -009E1
Screw type tension stud 1
18.
22Tl-009E2
Spring for pretension 1
19.
22T1-009E3
Disc for pretension 2
20 . 22Tl-009E4
Space for pretension 1
21.
GB896 Stop ring
1
22 .
22Tl-009E5
Pretension thread guide 1
23. 22Tl-010
Three-hole thread guide 1
24.
22Tl-Oll
Set screw 1
25. 05-01-007C1
Thread tension bracket 1
26. 05-01-007C2
Thread tension stud 1
27. 05-01-007C3 Tension regulating
nut 1
28.
73Tl-002C1
Thread tension spring 1
29. 05
-01-0 07C4
Thread tension releasing disc 1
30. 05-0 l-007C5
Thread tension disc 2
31. 05-01-007C6 Stop disc 1
32. 05 -0l-007C7
Pin 1
33. 05-01-007C8-1
Thread controller disc 1
34. 05-01-007C8-2
Thread controller plate 1
35.
05-01-007C9
Screw 1
36 . 05-01-
007C10
Thread tension release plate 1
37 . 05-0 1-007Cll
Screw
2
38. 05-01-
007C12
Thread tension release pin 1
39 . 72Tl-013
Screw
1
40. 05-01-008 Thread controller stud 1
41. 05-
01-009
Thread take-up spring 1
42.
05-01-010
Tension thumb nut
1
43 . 05 -01- 011
Thread take-up spring stop 1
44 . 05-01-016
Screw
1
45.
22Tl-011
Screw
1
46. 01- 01-006
Bed side cover
1
47 . 01-01- 007
Gasket for bed side cover 1
48 . 72Tl-017
Set screw
6
49 . 09-01-003
Cap for bed face plate 1
50. 72Tl-004C4
Rubber plug 8
51.
72Tl-009
Rubber plug 1
52 . 72Tl-Oll
Rubber plug 1
53.
09 - 01-006
Bed rear cover
1
54 . 09 - 01-007
Gasket for bed rear cover 1
55 . 72Tl-017
Set screw
1
56.
22Tl-Oll
Set screw
4
11
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2. NEEDLE BARAND TAKE-UP MECHANISM
12
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2. NEEDLE B AR AND TAKE-UP MECHANISM
No. Ref . No. Description
Pcsl I Remarks
1.
05-02-001 Thread take-up lever l
2. 05-02-002 Hinge pin 1
3. 22T2-002 Set screw 1
4. 05-02-003 Thread take-up lever driving stud 1
5. 05-02-004 Oil guard l
6. 22T8-011C4 Setscrew 1
7. 05-02-005Al Needle bar crank 1
8.
22!2-006
Set screw 1
9. 22T2-007 Set screw 1
10. 05-02-006 Hinge pin 2
11 . 72T2-004B2 Set screw 1
12. 05-02-007 Needle
bar link 1
13 . 05-02-008 Needle bar adaptor 1
14. 22T7-015 Set screw 1
15 . 05-02-00981 Needle bar rock frame rock shaft 1
16 . 05-02-00982 Crank (Left) 1
17. GB117 Pin for crank 1
18. 05-02-00983 Slide block for needle
bar rock frame 1
19. 05-02-00984 Position bracket l
20. 72T2-003 Screw l
21. 05-02-010 Needle bar rock frame 1
22. 05-02-011 Hinge pin 1
23. 22T2-002 Screw 1
24. 05-02-012 Needle bar 1
25. 04-02-004 Thread guide for needle bar 1
26 . 04-02-005 Screw 1
27. Needle 1
28. 22T2-017 Needle clamp screw 1
29 . 05-02-014C1 Crank (Right) 1
30 . 02-08-007 Screw 1
31. 09-02-001C2 Crank level link 1
32. 22T5-001A4 Screw (Right) l
33. 05-05-003 Hinge pin
(U p pe r) 1
34. 05-02-015 Bushing for rock shaft (Left) 1
35 . 05-02-016 Bushing for rock shaft (Right) 2
36. 22T2-002 Screw 1
37 . 22Tl-Oll
Screw
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3. ARM SHAFf AND VERTICAL SHAFT MECHANISM
i5 i?1~3
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b.,
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3.ARM SHAFTAND VERTICALSHAFT MECHANISM
No. Ref. No. Description
Pcsl Remarks
1.
05-03-001A1 Arm shaft 2
2. 22T3-001A2 Rubber plug 1
3. 22T6-005B1 Collarfor arm shaft 2
4. 22T3-002B2 Set
screw 1
5. 22T3-003 Arm shaft bushing (Left) 1
6. 05-
03-007
Arm shaft bushing (Middle) l
7. 22T7-002 Set sc r ew
1
8. 05-03-
006 Armshaft bushing (Right) 1
9. 22T3-006F Oil seal 1
10. 02-03-001 Balance wheel 2
11.
22T3-007C2 Set screw 1
12 . 22T3-008 Set screw 1
13.
09 -03-001B1 Feed lifting eccentric 2
14. 22T2-
002
Setscrew 1
15. 09-03-001B3 Baffie plate 3
16.
04-01- 017 Set screw 1
17 . 09-03-001B2 Feed link lever 1
18 .
22Tl-01l
Screw 1
19 . 05-03-003 Vertical shaft 1
20. 22T3-010E2a1-2 Bevel
gear for arm shaft 1
21. 22T3-010E2a2-2 Bevel
gear for vertical shaft (Upper) 8
22. 22T2-005B3 Set screw 1
23. 22T3-01OE2b1-2 Bevel
gear for hook shaft 1
24. 22T3-01OE2b2-2 Bevel
gear for vertical shaft (Lower) 1
25. 05-03-004 Vertical shaft bushing (U pper) 1
26 . 05-03- 005 Vertical shaft bushing (Lower) 2
27 . 22T2-002 Setscrew
.:.
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4. liOOJ( SlfAFTMEClfANISM
'
r - -
--- -- ---- ---
--- -------J
8
II\
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4. HOOK SHAFT MECHANISM
No . Ref.
No . Description Pes
Remarks
1.
13-04-001 Rotating
hook shaft 1
2. KHS12-GTPND2 Rotating
hook co mplete 1
3. SC31-NS Bobbin case 1
4.
2214 -017 Bobbin l
5. GB879-86
Pin
2
6. 13-04-009 Set screw 2
7. 13-04-002 Hook shaftbushing (left) 1
8.
09 -04-009 Hook shaft bushing (right) 1
9. 22Tl-Oll Setscrew 2
10. 13-04-003 Feed lifting internal gear 1
11. 13-04-004 Cam plate 1
12. 13-04-005 Cover plate l
13 . 13-04-006 Gasket for
cam plate 1
14. 13-04-007 Outside cover plate I
15. 13-04-008 Set screw 2
1'"7
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5. STITCH LENGTH REGULATING MECHANISM
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18
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5.STITCH LENGTH REGULATING MECHANISM
No. Ref No. Description
Pes Remarks
1.
09-05-003 Reverse feed link lever 1
2. 09-05-001 Hinge pin 1
3. GB896 Retaining ring 1
4. -05-06-003 Bushing for reverse feed lever
shaft
1
22Tl-011 Set screw 1
5. 08-05-002B1 Feed regulator 1
6. 22T2-019 Setscrew 1
7. 05-06-001 Feed regulator bushing 1
8. 05-06-005 Setscrew 1
9. 09-05-002 Hinge
pin for feed regulator I
10. 72T5-003 Rubberp1ug 1
11.
04 - 06 -002 Feed regulator screw bar
1
12 . 22T5-006C4
0-ring
2
13 . 22T5-006C2 Dial 1
14. 22T5-006C3 Screw 1
15. 72T5-005 Rubber plug 1
16. 22T5-008 Stopper
pin
1
17. 22T5-009 Spring for stopper pin 1
18 . 72T5-006C1 ReYerse feed lever 1
19. 05-06-002D1 Reverse feed lever shaft 1
20.
22T5-01002b 0-ring
1
21.
22T5-01003 Screw 1
22. 22T5-001A4 Screw 2
23. 22T5-011 Washer 1
24. 22T5-012El Reverse feed crank 1
25. 22T5-0
12E1al Slide block pin 1
26 . 22T5-0
12El a2 Slide block 1
27. 22T5-012E2 Spring for reverse feed crank 1
28. 22T5-013 Screw 1
29. 22T5-014 Bracketfor spring 1
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