typical TW1-2B Technical manual

OPERATION INSTRUCTION / PARTS MANUAL
R
Single Needle Top and Bottom Feed Extra
Heavy-duty Lockstitch Sewing Machine
TW1-2B/TW1-2BL20

ADD: WANPING TOWN, WUJIANG CITY, JIANGSU
PROVINCE, CHINA
TEL: +86-512-
FAX: [phone]
Http://www.typicalwpchina.com
E-mail:[email protected]
63391278
POST. CODE: 215223
TYPICAL SEWING MACHINE WANPING MACHINERY CO.,LTD.
Please don't adjust and repair the machine by non-professionals,except adjusting stitch.
Specifications subject to change without notice

CONTENTS
Operation instructionOperation instruction
Parts manualParts manual
1. Brief introduction
2. Main technical specification
3. Operation and preparation
4. Installing the clutch motor
5. Connecting the clutch motor lever to the pedal
6. Connecting the presser foot lift control pedal
7. Installing the belt guard
8. Installing the bobbin winder
9. Lubrication
10. Trail run
11. Installing the needle
12. Coordination among the needle, the thread and the material
13. Threading the needle thread
14. Winding adjusting
15. Adjusting the forward stitch length and reverse stitch length
16. Oiling the thread take-up part
17. Adjusting the pressure of presser foot
18. Installing the bobbin and adjusting the thread tension
19. Adjusting the thread take-up spring
20. Adjusting the tension of needle thread and bobbin thread
21. Timing between he needle and the rotating hook
22. Installing and uninstalling the hook
23. Installing the hook stop bracket
24. Installing the Feed dog
25. Feed timing adjustment
26. Upper feed adjustment
27. Adjusting the clearance between presser foot and walking foot
28. Periodical cleaning
1. Arm and bed
2. Thread take-up mechanism
3. Bottom feed mechanism
4. Presser bar mechanism
5. Upper feed mechanism
6. Accessories
1. Brief introduction
2. Main technical specification
3. Operation and preparation
4. Installing the clutch motor
5. Connecting the clutch motor lever to the pedal
6. Connecting the presser foot lift control pedal
7. Installing the belt guard
8. Installing the bobbin winder
9. Lubrication
10. Trail run
11. Installing the needle
12. Coordination among the needle, the thread and the material
13. Threading the needle thread
14. Winding adjusting
15. Adjusting the forward stitch length and reverse stitch length
16. Oiling the thread take-up part
17. Adjusting the pressure of presser foot
18. Installing the bobbin and adjusting the thread tension
19. Adjusting the thread take-up spring
20. Adjusting the tension of needle thread and bobbin thread
21. Timing between he needle and the rotating hook
22. Installing and uninstalling the hook
23. Installing the hook stop bracket
24. Installing the Feed dog
25. Feed timing adjustment
26. Upper feed adjustment
27. Adjusting the clearance between presser foot and walking foot
28. Periodical cleaning
1. Arm and bed
2. Thread take-up mechanism
3. Bottom feed mechanism
4. Presser bar mechanism
5. Upper feed mechanism
6. Accessories
1
1
1
1
2
2
2
3
3
4
4
4
5
5
5
6
6
6
7
7
8
9
9
9
10
11
11
11
12-13
14-15
16-17
18-19
20-21
22-23

Operation Instruction

A
B
C
Max. Sewing speed
Max. Stitch length
Presser foot lifting
Alternate press foot
lifting range
Timing of walking foot
and feed dog
Rotating hook
Needle
Lubrication
Clutch motor
Max. Sewing speed
Max. Stitch length
Presser foot lifting
Alternate press foot
lifting range
Timing of walking foot
and feed dog
Rotating hook
Needle
Lubrication
Clutch motor
-1-
1
Model TW1-2B/2BL20 extra heavy duty top and
bottom feed lockstitch sewing machine with large
hook adopts single straight needle, link thread
take-up, high precise bevel gears driving, large hook
catching thread. With special upper feed mechanism,
the machine shows its good performance on sewing
extra heavy duty and extra thick thread.
It is widely used on sewing suitcas s, leather, sofa,
tents, bamboo matting, ect.
.
.
e
Model TW1-2B/2BL20 extra heavy duty top and
bottom feed lockstitch sewing machine with large
hook adopts single straight needle, link thread
take-up, high precise bevel gears driving, large hook
catching thread. With special upper feed mechanism,
the machine shows its good performance on sewing
extra heavy duty and extra thick thread.
It is widely used on sewing suitcas s, leather, sofa,
tents, bamboo matting, ect.
(1) Cleaning the machine
Before delivery, the machine parts are coated with
rust preventive grease, which maybe hardened and
contaminated by dust during storage and shipment.
The grease and dust must be removed by clean cloth
with gasoline.
(2) Examination
Though every machine is confirmed by strict
inspection and test before delivery, the machine parts
maybe loosed or deformed after a 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 there exist adjustment must be
made accordingly before running.
.
.
.
.
(1) Cleaning the machine
Before delivery, the machine parts are coated with
rust preventive grease, which maybe hardened and
contaminated by dust during storage and shipment.
The grease and dust must be removed by clean cloth
with gasoline.
(2) Examination
Though every machine is confirmed by strict
inspection and test before delivery, the machine parts
maybe loosed or deformed after a 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 there exist adjustment must be
made accordingly before running.
Align machine balance wheel belt groove (A) with
motor pulley belt groove (B) by moving motor
leftward or rightward. .
Align machine balance wheel belt groove (A) with
motor pulley belt groove (B) by moving motor
leftward or rightward.
1. Brief introduction
3. Operation and preparation
4. Installing the clutch motor (Fig. 1)
2. Main technical specification
1200s.p.m
13mm
13mm by hand, over 13mm by knee13mm by hand, over 13mm by knee
4mm 6mm4mm 6mm
Max stroke is more than 13mmMax stroke is more than 13mm
Extra large hookExtra large hook
DDX1 24 27
##
DDX1 24 27
##
Lubricated by handLubricated by hand
0.5KW
TW1-2B TW1-2BL20
Model
Parameter
900s.p.m

A
B
C
D
E
-2-
2
3
4
A. The optimum tilt angle of pedal with floor is
approx. 20 30 degree.
B. Adjust the clutch of motor so that clutch lever
(c) and draw bar (B) run in line, the machine would
have stable motion and long using.
C. The machine balance wheel should rotate
counterclockwise for normal sewing when view
form opposite side of the balance wheel the motor
rotates in the same direction. The rotation can be
reversed by reversing (turn over 180 degree) the
plug of the motor.
D. Adjust the tension of V-belt (F) by moving the
motor vertically. The proper tension of V-belt is a
slack of 10 12mm when the belt is depressed by
finger.
.
.
.
.
A. The optimum tilt angle of pedal with floor is
approx. 20 30 degree.
B. Adjust the clutch of motor so that clutch lever
(c) and draw bar (B) run in line, the machine would
have stable motion and long using.
C. The machine balance wheel should rotate
counterclockwise for normal sewing when view
form opposite side of the balance wheel the motor
rotates in the same direction. The rotation can be
reversed by reversing (turn over 180 degree) the
plug of the motor.
D. Adjust the tension of V-belt (F) by moving the
motor vertically. The proper tension of V-belt is a
slack of 10 12mm when the belt is depressed by
finger. .
.
.
.
First the hook A should be connected to the chain
B and presser foot lift lever C, then put the pedal
compl te D on the stand. Move the control pedal E
leftward or rightward until the chain becomes on one
line. Tighten the bolts and nuts. Finally, connect the
finger to the control pedal.
e
.
First the hook A should be connected to the chain
B and presser foot lift lever C, then put the pedal
compl te D on the stand. Move the control pedal E
leftward or rightward until the chain becomes on one
line. Tighten the bolts and nuts. Finally, connect the
finger to the control pedal. .
e
Please install the belt guard for safety.
5. Connecting the clutch motor lever to
the pedal (Fig. 2)
6. Connecting the presser foot lift
control pedal (Fig. 3) .
7. Installing the belt guard (Fig. 4)
10 12mm
20 30
A
B
C
D
E
F
G

A
B
C
E
C
D
-3-
Align pulley (B) of the bobbin winder with the
outside of the belt (C). And there should be a proper
clearance between them so that the pulley can be
contacted with the belt when stop latch thumb lever
(A) is depressed. Thereby the belt drivers the pulley
(B) while the machine running, the bobbin winder
should be parallel with belt slit (E) of the table. Then
tighten the two wood screws. .
Align pulley (B) of the bobbin winder with the
outside of the belt (C). And there should be a proper
clearance between them so that the pulley can be
contacted with the belt when stop latch thumb lever
(A) is depressed. Thereby the belt drivers the pulley
(B) while the machine running, the bobbin winder
should be parallel with belt slit (E) of the table. Then
tighten the two wood screws. .
The places with red marks must be add
oil after the machine finish running daily. Then keep
running the machine for 1 2 minutes.
enough
.
The places with red marks must be add
oil after the machine finish running daily. Then keep
running the machine for 1 2 minutes. .
enough
8. Installing the bobbin winder (Fig. 5)
9. Lubrication (Fig. 6)
5
6

-4-
7
8
When the machine left out of operation for a quite
long time and used again or a new complete machine,
remove the rubber plug and face plate on the top of
the machine head, oil it thoroughly. Then lift the
presser foot and run the machine at a low speed of
200 400 spm. After the machine is lubricated fully,
keep t ial running the machine for 30 minutes, and
then increase the speed gradually. After months
running to prefect its performance, then increase up
to its proper sewing speed.
r
.
When the machine left out of operation for a quite
long time and used again or a new complete machine,
remove the rubber plug and face plate on the top of
the machine head, oil it thoroughly. Then lift the
presser foot and run the machine at a low speed of
200 400 spm. After the machine is lubricated fully,
keep t ial running the machine for 30 minutes, and
then increase the speed gradually. After months
running to prefect its performance, then increase up
to its proper sewing speed. .
r
Turn the balance wheel to lift needle bar to its
highest position, loosen needle set screw (1), keeping
the long groves facing to the left side of operator, and
now fully insert the needle shank upto the bottom of
needle clamp. Last tighten the screw (1) to fix the
needle. .
Turn the balance wheel to lift needle bar to its
highest position, loosen needle set screw (1), keeping
the long groves facing to the left side of operator, and
now fully insert the needle shank upto the bottom of
needle clamp. Last tighten the screw (1) to fix the
needle. .
Please use the left-twisted needle thread and the
left-twisted or right-twisted bobbin thread. Shown as
Fig. 10, holding the thread, twist it with right hand in
the direction of arrow, if it becomes tight, it is
left-twisted thread. Otherwise, it is right-twisted
thread.
Please use the model DDX1 24# 27# needle.
The needle must be suitable for the materials. Sewing
too heavy-duty materials and using too thin needle,
the needle would be broken, thread skipping and
breaking. If the needle too heavy, it would damage
the fabric. So please choose the suitable needle
according to the materials.
.
.
Please use the left-twisted needle thread and the
left-twisted or right-twisted bobbin thread. Shown as
Fig. 10, holding the thread, twist it with right hand in
the direction of arrow, if it becomes tight, it is
left-twisted thread. Otherwise, it is right-twisted
thread. .
Please use the model DDX1 24# 27# needle.
The needle must be suitable for the materials. Sewing
too heavy-duty materials and using too thin needle,
the needle would be broken, thread skipping and
breaking. If the needle too heavy, it would damage
the fabric. So please choose the suitable needle
according to the materials. .
Note: Fig (b): no fully insertion
Fig (c): wrong direction of long groove in
insertion
Note: Fig (b): no fully insertion
Fig (c): wrong direction of long groove in
insertion
10. Trail run
11. Installing the needle (Fig. 7)
12. Coordination among the needle, the
thread and the material (Fig. 8)
Long groove leftward
Clearance
a
bc

a
b
c
d
e
f
g
h
i
j
K
C
E
A
B
D
abcd
A
B
C
D
-5-
When threading the needle thread, the needle bar
must be its highest position. The correct threading
stepsasbelow: .
When threading the needle thread, the needle bar
must be its highest position. The correct threading
stepsasbelow: .
Bobbin thread should be neat and tight. If not,
adjust the thread tension by turning tension stud
thumbnut (A) of bobbin winder tension bracket.
When the bobbin thread layer cannot present a
cylindrical shown as Fig. a. loosen the tension
bracket screw (B) and move the tension bracket
leftward or rightward. If the thread is as shown in
Fig. b, move the tension bracket rightward. If the
thread is as shown in Fig c, move the tension bracket
leftward. Till the thread as shown in Fig. a, tight the
screw.
Note: Nylon or polyester thread should be wound
with light tension, otherwise bobbin (D) may be
broken or deform. Do not overfill the bobbin, the
optimum capacity of thread will fill about 80% of
bobbin outside diameter. This can be adjusted by
stop latch screw (E).
.
.
Bobbin thread should be neat and tight. If not,
adjust the thread tension by turning tension stud
thumbnut (A) of bobbin winder tension bracket.
When the bobbin thread layer cannot present a
cylindrical shown as Fig. a. loosen the tension
bracket screw (B) and move the tension bracket
leftward or rightward. If the thread is as shown in
Fig. b, move the tension bracket rightward. If the
thread is as shown in Fig c, move the tension bracket
leftward. Till the thread as shown in Fig. a, tight the
screw.
Note: Nylon or polyester thread should be wound
with light tension, otherwise bobbin (D) may be
broken or deform. Do not overfill the bobbin, the
optimum capacity of thread will fill about 80% of
bobbin outside diameter. This can be adjusted by
stop latch screw (E). .
.
Stitch length can be adjusted by moving adjusting
spanner (A). Turning the adjusting spanner clockwise,
the stitch will be shorter. Otherwise, the stitch length
will be longer. After finishing adjustment, take a
paper to test the stitch length until obtaining the
satisfied stitch length. Then check if the forward
stitch length is same as reverse stitch length. If the
reverse stitch length is shorter than forward stitch,
turn the screw (C) counter clockwise, and then
tighten the nut. Otherwise, turn the screw clockwise.
It also can be adjusted by turn screw (D). .
Stitch length can be adjusted by moving adjusting
spanner (A). Turning the adjusting spanner clockwise,
the stitch will be shorter. Otherwise, the stitch length
will be longer. After finishing adjustment, take a
paper to test the stitch length until obtaining the
satisfied stitch length. Then check if the forward
stitch length is same as reverse stitch length. If the
reverse stitch length is shorter than forward stitch,
turn the screw (C) counter clockwise, and then
tighten the nut. Otherwise, turn the screw clockwise.
It also can be adjusted by turn screw (D). .
(a) Long thread retainer
(b) Short thread retainer
(c) Small thread tension disc
(d) Big thread finger
(e) Big thread tension disc and take-up spring
(f) Big thread finger
(g) Thread take-up lever
(h) Small thread finger
(i) Thread guide
(j) Thread retainer
(k) Thread guide ring
(a) Long thread retainer
(b) Short thread retainer
(c) Small thread tension disc
(d) Big thread finger
(e) Big thread tension disc and take-up spring
(f) Big thread finger
(g) Thread take-up lever
(h) Small thread finger
(i) Thread guide
(j) Thread retainer
(k) Thread guide ring
13. Threading the needle thread (Fig. 9)
14. Winding adjusting (Fig. 10)
15. Adjusting the forward stitch length
and reverse stitch length (Fig. 11)
9
10
11

A
B
ab
A
IncreaseIncrease
DecreaseDecrease
Screw
-6-
12
13
14
Thread take-up parts adopt woolen thread oiling.
After a long time using, its function lost. So it must
be replaced with a new one. Steps as below:
Thread take-up parts adopt woolen thread oiling.
After a long time using, its function lost. So it must
be replaced with a new one. Steps as below:
Pressur on presser foot is to be adjusted in
accordance with materials to be sewn. Loosen the
locknut (A). If heavy materials to be sewn, turn the
presser regulation thumbscrew clockwise as shown in
Fig (a) to increase the pressure. While light materials
to be sewn, turn the pressure regulating thumbscrew
counter clockwise as show in Fig. (b) to decrease the
presser on presser foot. Then tighten the lock nut (A).
The pressure on presser foot is proper as the
materials can be fed normally.
e
.
Pressur on presser foot is to be adjusted in
accordance with materials to be sewn. Loosen the
locknut (A). If heavy materials to be sewn, turn the
presser regulation thumbscrew clockwise as shown in
Fig (a) to increase the pressure. While light materials
to be sewn, turn the pressure regulating thumbscrew
counter clockwise as show in Fig. (b) to decrease the
presser on presser foot. Then tighten the lock nut (A).
The pressure on presser foot is proper as the
materials can be fed normally. .
e
The tension on thread can be adjusted according
to the materials and different types of thread.
Normally, adjust the thread tension according to the
sewing stitches. Adjust the sewing stitches by
changing the tension on bobbin thread and needle
thread.
Increase or decrease the bobbin thread tension by
using the small screwdriver to turn the screw on
bobbin case.
Depend on the tension on bobbin case, by changing
the take-up spring tension & range, the tension of
tension spring, the position of tension disc and
thread finger to adjust the needle thread tension.
.
.
.
The tension on thread can be adjusted according
to the materials and different types of thread.
Normally, adjust the thread tension according to the
sewing stitches. Adjust the sewing stitches by
changing the tension on bobbin thread and needle
thread. .
Increase or decrease the bobbin thread tension by
using the small screwdriver to turn the screw on
bobbin case.
Depend on the tension on bobbin case, by changing
the take-up spring tension & range, the tension of
tension spring, the position of tension disc and
thread finger to adjust the needle thread tension. .
.
(1) Open the faceplate remove the pressure screw,
lock nut and adjusting bar.
(2) Remove the pin (A) and draw out the old oil
wick.
(3) Draw out the oil wick in the part (B).
(4) Change the new oil wicks.
(5) Installing is a reverse sequence.
(1) Open the faceplate remove the pressure screw,
lock nut and adjusting bar.
(2) Remove the pin (A) and draw out the old oil
wick.
(3) Draw out the oil wick in the part (B).
(4) Change the new oil wicks.
(5) Installing is a reverse sequence.
16. Oiling the thread take-up parts
(Fig. 12)
17. Adjusting the pressure of presser
foot (Fig. 13)
18. Installing the bobbin and adjusting
the thread tension (Fig. 14)