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8. ADJUSTMENT OF UNIT
(1) CARRIAGE UNIT
1) Adjusting the driving section of the carriage
Carriage
Pinion
Screw
Screws
2) Adjusting position of origin and the presser switch of the carriage swtich
Adjust the sewing machine both in the men's wear sewing mode and the ladies' wear sewing mode. Be sure
to mode slide bearings (right and left) 6 to both ends of the carriage and fix them with slide bearing knob 7
before starting the adjustment.
Names of each adjusting area
!1
Left-hand side
of the unit
4
5 Origin detecting plate
1 Photo sensor 1
2 Photo sensor 2
(for ladies' wear)
3 Discriminating sensor
6 Slide bracket
4 Origin detecting plate
7 Slide bearing knob
8 Carriage
(for men's wear)
(Caution) Functions of photoelectric sensors 1 and 2 change over as shown in the table below under
the men's wear sewing mode and the ladies' wear sewing mode.
Sensor No.
Mode
Men's
Speed reduction sensor
Ladies'
Origin sensor
Screw
Rack
Backlash
0 to 0.05 mm (0.002")
!5
!3
1
9 Pinion gear
!0 Rack
!1 Presser detecting plate
(for men's wear)
!2 Presser detecting plate
(for ladies' wear)
1
Origin sensor
Speed reduction sensor
46
−
1) Loosen the attaching screw and adjust so that a
backlash of 0 to 0.05 mm is provided between the
rack and the pinion gear over the length.
2) After the completion of the aforementioned
adjustment,measure the starting load of the
carriage. Press the section marked with the arrow
in the figure and measure the starting load at the
start,intermediate position and the end of the entire
stroke. As long as the starting load of 2 kgf or less
is provided at all the aforementioned positions, no
trouble will result.
(Caution) If the backlash between the rack and
t h e p i n i o n i s n o t p r o p e r l y
adjusted,step-out of the stepping
motor or failure of feeding may result.
3) Confirm that the two screw in the gear presser are
securely tightened. (Tighten either screw in the flat
part on the motor shaft.)
!6
6
!4
2 3
9
!0
!3 Presser switch
(for men's wear)
!4 Presser switch
(for ladies' wear)
!5 Stopper (for men's wear)
!6 Stopper (for ladies' wear)
2
−
!2
7
8
Right-hand side
of the unit
5
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