ZOJE ZJ2628 User manual

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

1. MAIN SPECIFICATION
Sewing speed
Stitch length
Needle bar stroke
Presser foot lift
2000s.p.m.
0-5mm
33.2mm
7mm (Manual)
14mm(Knee)
12. INSTALL THE MOTOR ( Fig.1 )
Align Motor Pulley Groove (B) and Balance
Wheel Groove (A) by moving the Motor(C) leftward
or rightward.
Needle
Lubrication
Reverse feeding mechanism
DPX 17 18'-22"
Auiomatic
Have
1
13. CONNECT THE 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 (tnrning over 180 degree)
the power plug
of the motor.
4. Adjust the tension of V-belt (F) by tnrning
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. PREPARATIONAND LUBRICATION ( Fig.3 )
l) 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. Turn 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
(1) 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
Always use only No.l8 special machine oil for
high speed sewing.
Be sure to replenish oil to Line (A)
before starting operation.
Ci) Replacing oil
To replace oil, remove Screw (C) to drain 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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Is. 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, fnlly insert the needle shank up to the
bottom
of the needle socket. Then tighten Needle
Clamp Screw (B).
I6.RUN IN OPERATION (Fig.5)
Run-in operation is required for a new sewing
machine,
or a sewing machine left out of operation for
a considerable length
of time.
I) Remove Rubber Plugs (A) on the top of the
arm and replenish sufficient amount
of oil, and also to
the red oil hole (D).
· 2) Lift Presser Foot (B).
3) Run the machine at a low speed
(I 000-1500spm) to check oil distributing condition
through Oil CheckWindow (C).
4) Perform run-in operation at I000-\500spm for
30 minutes. After a lapse of one month of service
during which the working speed is increased gradually
and the machine runs sufficiently well, the high speed
2000spm can be adopted according to the nature of the
work.
I 7. THREADING ( Fig.6 )
To thread the needle thread, raise needle bar to the
upper end of its stroke, lead the thread from spooI and
perform threading as shown in Fig.6. To draw the
bobbin thread, hold the end
of the needle thread and
tum the balance wheel to lower the needle bar and
then to lift it to its highest position. Pull the needle
thread and the bobbin thread is drawn up. Put the ends
of needle thread and bobbin thread frontward under
presser foot.
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Is. WINDINGADJUSTMENT <Fig. 1)
I) The wound bobbin thread should be neat and
tight,
if not, adjust the winding tension by turning
Tension Stnd 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 layer 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.
a~
19. SET STITCH LENGTH AND REVERSE FEEDING ( Fig.8)
I) 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.
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Ito. ADJUST THREAD TENSION (Fig.9,10,U)
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), tum the thumb nut counterclockwise to decrease
the needle thread tension, or tighten
the tension spring
regulating screw
of bobbin case to increase the bobbin
threadtension (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 !he tension spring
regulating screw
of bobbin case to decrease the
bobbin thread tension.
ju. ADJUST THREAD TAKE-UP SPRING (Fig.l2)
!.Adjustment of the thread take-up spring stroke
Loosen the stopper screw (B) and move the
regulating ring (C) leftwards to decrease the stroke
of
!he thread take-up spring, or move the regulating ring
(C) rightwards to increase the stroke. Mter. the
adjustment, tighten the screw (B).
2.Adjustment
of the thread take-up spring tension
Loosen the nut
(D) and screw (E) and tum the
regulating screw (F) clockwise to decrease the tension
of the thread take-up spring, or tum the regulating
screw (F) counterclockwise to increase the tension.
Thentighten the nut (D) and the screw (E).
9
a
b
c
u
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j12.TIME NEEDLE MOTION TO HOOK MOTION (Fig.13,14)
I. 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 2mrn 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 2-2.4mrn, further the clearance between
the
hook point and the needle hollow should be about
0.05 to O.lmm.
1) Lift needle bar to the highest position of its
stroke.
2) Remove the throat plate and feed dog, take down
needle and bobbin case
3) Loosen Screw (C)
of hook positioner and take
down Hook Positioner (A).
4) Loosen Screw (D)
of rotating hook, then take
down the rotating hook
5) Installing the hook can be done in reverse
sequence. Note that Needle (B) and the convex
surface
of Hook Positioner (A) should align with a
clearance
of 0.5-0.7mm between them.
0.05 -0.Inun
Q.5- Q.}mm
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lt4.ADJUST PRESSER FOOT (Fig.l6,17)
1. Lift adjustment of presser foot (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 way.
2. Pressure adjustment of the presser foot (A)(Fig.l6)
Turn pressure regulating screw (C) clockwise
to
increase the pressure of the presser foot (A), and
counterclockwise to decrease it
if you desire.
3. Adjustment of the alternate vibrating height of the
presser foot (A) and the walking foot
(B) (Fig.l6)
The presser foot (A) and the walking foot
(B)
vibrate alternately with equal height when machine is
in operation,
but it can be adjusted according to actual
requirements. To increase 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 tum balance wheel until the presser foot
(A) is slightly separate from
the needle plate, loosen
screw (E) and depress the presser foot (A) to reach
needle plate and then tighten the screw (E). To
decrease vibrating height
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
(Figl7)
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 walking foot (B) to needle (Figl6)
This is the normal timing when tum the balance
wheel toward you, 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 hold 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).
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I
I
I15.ADJUST FEED DOG(Fig.18,19,20,21)
!.Adjustment of the position of feed dog (Fig.l8,19)
Generally, the position
of the feed dog should he:
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). lf necessary, adjust as
follow:
l) Minimize stitch length
2) Loosen the Screw (D) of the Feed Rock
Shaft Crank (Right) and move the two-Screw (E)of
Crank.
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
screw (D),(E).
2. Relative position adjustment between needle and
the needle hole in the feed dog. (Fig.20)
Make sure that needle
can be descended to the
center of the needle hole, if not, adjust it as follows:
l ) 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. Time feed motion to needle motion (Fig.2l)
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.
lf feed motion is not timed to needle motion, adjust
as follows:
l) 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 lltld
feed lifting eccentric (B) and eccentric sleeve (E)
should be 0.3-0.5mm.
After the adjustment, be sure to tighten the screw
(A), (D).
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21
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lt6. REGULAR CLEANING (Fig.22,23)
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 arid clean the hook
Wipe the bobbin case with soft cloth.
:I
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PARTS LIST
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1. ARM BED AND ITS ACCESSORIES
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1. ARM BEDAND ITSACCESSORIES
No. Ref. No. Description Pes Remarks
I. 05-0l-OOIA2 Ann I
2. 09-01-00IB2 Ann bed 1
3. 09-01-002 Trade mark plate I
4. GB827-86 Trade mark plate rivot 2
5. 05-01-003
Faceplate 1
6. 05-01-004 Set screw 1
7. 05-01-005 Knock pin I
8. 05-01-006 Thread guide (Up) I
' 9.
22TI-003C5
Thread guide (Middle) I
10. 05-0J-013 Thread guide (Lower) 1
II. 22TI-003C6
Set screw
3
12. 05-01-014 Ann side cover 1
13. 05-01-015 Gasket for arm side cover I
14. 72TI-017
Set screw 8
15. 12H1-007C1 Oil check window 1
16. 12HI-007C2
0-ring 1
17. 22Tl-009El
Screw type tension stud I
18.
22TI-009E2
Spring for pretension I
19.
22Tl-009E3
Discfor pretension 2
20.
22Tl-009E4 Space for pretension 1
21. GB896 Stop ring I
22.
22Tl-009E5
Pretension tluead guide 1
23.
22Tl-010
Three-hole tluead guide 1
24.
22Tl-Oll
Set screw 1
25. 05-0I-007C1 Thread tension bracket 1
26. 05-0l-007C2
Thread tension stud 1
27. 05-01-007C3 Tension regulating
nut 1
28.
73Tl-002C1
Thread tension spring 1
29. 05-01-007C4 Thread tension releasiiig disc 1
30. 05-01-007C5.
Thread tension disc 2
31. 05-01-007C6 Stop disc 1
32. 05-01-007C7 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. 05-01-007Cil
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 stup 1
44. 05-01-016 Screw I
45.
22Tl-Oil
Screw 1
46. 01-01-006 Bed side cover I
47. 01-01-007 Gasket for bed side cover 1
48. 72Tl-017
Set screw 6
49. 09-01-003 Cap for bedface plate I
50. 72Tl-004C4
Rubber plug 8
51.
72Tl-009 Rubber ping I
52.
72Tl-Oil Rubber ping I
53. 09-01-004 Bed cover I
54. 09-01-005 Gasket for bed cover 1
55. 09-01-006 Bed
rear cover 1
56. 09-0l-007
Gasket for bed rear cover 1
57. 72Tl-017
Set screw 4
58.
72Tl-017
Set screw 4
59.
22Tl-Oil
Screw l
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2. NEEDLE BAR AND TAKE-UP MECHANISM
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2. NEEDLE BARAND TAKE-UP MECHANISM
No. Ref. No. Description
Pcsl
Remarks
1. 05-02-001 Thread take-up lever 1
2. 05-02-002 Hinge pin l
3. 22T2-002 Set screw 1
4. 05-02-003 Thread take-up lever driving stud l
5. 05-02-004 Oil guard 1
6. 22T8-0llC4
Set screw l
7. 05-02-005Al
Needle bar crank 1
8. 22T2-006 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 I
14. 22T7-0I5
Set screw 1
15. 05-02-009Bl
Needle bar rock frame rock shaft I
16. 05-02-009B2 Crank (Left) 1
17. GBI17
Pin for crank l
18. 05-o2-009B3 Slide block for needle
bar rock frame 1
19. 05-02-009B4 Position bracket I
20. 72T2-003
Screw
1
21. 05-02-010 Needle bar rock frame I
22. 05-02-0ll
Hinge pin
1
23. 22T2-002 Screw I
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 - I
29. 05-02-014Cl Crank (Right) I
30. 02-08-007 Screw 1
31. 09-02-00IC2 Crank level-link 1
32. 22T5-001A4 Screw (Right) 1
33. 05-05-003 Hinge pin (Upper) 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 I
37. 22Tl-Oll
Screw
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3. ARM SHAFT AND VERTICAL SHAFT MECHANISM
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3.ARM SHAFTAND VERTICAL SHAFT MECHANISM
No. Ref. No. Description
Pcsl
Remarks
1. 05-03-00lAl
Ann shaft 2
2. 22T3-001A2 Rubber plug 1
3.
22T6-005Bl
Collar for arm shaft 2
4. 22T3-002B2 Set screw 1
5. 22T3-003 Ann shaft bushing (Left) 1
6. 05-03-007 Ann shaft bushing (Middle) 1
7.
22T7-002
Set screw
1 .
8.
05-03-006 Ann shaft 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. 09-03-00I B1 Feed lifting eccentric 2
14. 22T2-002 Set screw 1
15. 09-03-001
B3
Baflle plate 3
16.
04-01-017
Set screw 1
17.
09-03-001B2 Feed linklever 1
18.
22Tl-Oll
Screw 1
19. 05-03-003 Vertical shaft 1
20. 22T3-010E2a1-2 Bevel gearfor arm shaft 1
21.
22T3-0l OE2a2-2 Bevel gear for vertical shaft (Upper) 8
22. 22T2-005B3 Set screw 1
23. 22T3-010E2b1-2 Bevel
gear for hook shaft 1
24. 22T3-01OE2b2-2 Bevel
gear for vertical shaft (Lower) 1
25. 05-03-004 Vertical shaft bushing (Upper) 1
26. 05-03-005 Vertical shaft bushing (Lower) 2
27. 22T2-002 Set screw -
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15
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4. HOOK SHAFT MECHANISM
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4. HOOK SHAFT MECHANISM
No. Ref. No. Description Pes Remarks
l. 09-04-001 Rotating hook shaft 1
2. 09-04-007 Bearing block 1
3. 09-04-008 Set screw 4
4.
22T4-001Alal Filter screw 1
5.
22T4-001Ala2 Filter 1
6. 05-04-003 Rotating hook complete 1
7.
Bobbin case 1
8. 22T4-017 Bobbin 1
9. 09-04-004 Collar for hook shaft (Left) 1
10. 09-04-002Al Collarfor hook shaft (Right) 1
11.
09-04-009 Hook shaft bushing (Right) I
12. 22Tl-Oll
Set screw 2
13. 09-04-006 Hook shaftbushing (Left) 1
14.
22T6-001Alb
Set screw 2
15.
09-04-003 Rotating hookpositioner 1
16. 09-04-005 Set screw 2
I
ji
II
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17
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5. STITCH LENGTH REGULATING MECHANISM
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5.STITCH LENGTH REGULATING MECHANISM
No. Ref. No. Description Pes Remarks
I.
09-05-003 Reverse feed link lever I
2.
09-05-001 Hinge pin 1
3. GB896 Retaining ring I
4. -05-06-003 Bushing for reverse feed lever shaft 1
22Tl-Oil
Set screw I
5. 08-05-002BI Feed regulator 1
6. 22T2-0I9 Set screw I
7. 05-06-001 Feed regulator bushing 1
8.
05-06-005 Set screw 1
9. 09-05-002 Hinge pin for feed regulator I
IO.
72T5-003 Rubber plug I
ll. 04-06-002 Feed regulator screw bar I
12. 22T5-006C4
0-ring
2
13. 22T5-006C2 Dial I
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. 72T5-006CI Reverse feed lever 1
19. 05-06-002DI Reverse feed lever shaft 1
20... 22T5-0
1 OD2b
0-ring 1
21. 22T5-010D3 Screw 1
22. 22T5-001A4 Screw 2
23.
22T5-0il
Washer 1
24. 22T5-012EI Reverse feed crank 1
25. 22T5-012E1a1 Slide block pin 1
26. 22T5-012E1a2 Slide block 1
27. 22T5-012E2 Spring for reverse
fe"t:d crank 1
28. 22T5-013 Screw I
29. 22T5-014 Bracketfor spring I
.
Q
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