Service manual

7. FOLDING MACHINE
BAS-7610
7-09
B. The pocket material or body strays when the center blade retracts from the pocket.
B-1. The center blade has burrs.
B-2. When the power is turned OFF, the clearance between the center blade bottom surface and the needle
plate top surface is not correct. A small clearance moves the pocket material and the body
simultaneously; a large one causes only the pocket material to stray backward.
Loosen the right and left bolts and the set screw, then adjust the center blade height by rotating the adjust
screws. One turn raises or lowers the inner clamp lever by 1 mm, and raises or lowers the center blade by 2 mm.
When the center blade is at its lowest position and lightly presses the body, make sure that some resistance can
be felt in the front of the center blade.
The detailed adjustment procedures are described on “5-12. Adjusting the folding clamp”.
B-3. The sewing clamp assembly lightly presses the folded pocket, or descends slowly.
Remove valve cover. Set the pressure of the sewing clamp assembly to 0.15 - 0.20 MPa by adjusting the
regulator in the figure on the left; excessively high pressure may make the material stray while the material is
sewn or carried. Be sure to check that the pressure is proper by pressing the valves 4A and 4B alternately by
hand.
When the sewing clamp assembly descends slowly, adjust the speed control of the valve 4A. If the assembly
descends too early, the pocket material may be improperly folded in the flap margins.
B-4. The sponge attached underneath the sewing clamp assembly near the operator is improperly stuck.
C. Plate spring R and L in the center blade assembly and the inner clamp blades in the inner clamp
assembly are improperly attached.
D. Program defect
Reprogram to shift the programmed pattern in parallel when the seam deviation is small.
Rod nut
A
d
j
ust screw
Set screw
Bolt
1828S
1387S
1388S