Brother BAS-761 Service Manual download pdf (Page 131)

7. FOLDING MACHINE

BAS-7610

7-01

7. FOLDING MACHINE

7-1. Basic adjustments for delivery

There is not perfect compatibility between the folding machine and the sewing machine. A folding machine which is

ordered at the same time as the sewing machine does not have to be readjusted much because the folding machine has

been adjusted to the sewing machine at shipping. But a folding machine which is ordered separately needs to be

readjusted when delivered because it has been adjusted to a different sewing machine at shipping.

Never loosen the screws securing the sewing clamp (Figure 3), which is attached using a gauge.

Adjustment is performed by loosening the screws securing the center blade assembly (Figure 1), the inner clamp

assembly (Figure 2) and the folding clamp assembly (Figure 4). The adjustment procedures are described below.

1. Supply air, then turn ON the power. A home position is detected.

2. Attach the folding machine to the sewing machine, then lock the folding machine.

3. Perform the test mode operation to check that the needle does not contact the sewing clamp (Figure 3). While

performing the test, never sew the body.

4. If the needle does not descend into the groove center of the sewing clamp (Figure 3), shift the programmed pattern in

parallel or reprogram partially.

5. Place the body under the center blade (Figure 1). In the step mode, when the sewing clamp (Figure 3) covers the

center blade (Figure 1), adjust the center blade (Figure 1) so that its edge comes to the approximate groove-center of

the sewing clamp (Figure 3). (The position of X directions can be adjusted by the program.) Refer to instruction manual

of programmer.

6. The inner clamp (Figure 2) and the folding clamp (Figure 4) must be adjusted against the center blade (Figure 1).

7. Actually sew the pockets. If a problem occurs, see the following pages to adjust the parts.

Ex. Three corner (home plate) model

Figure 1

Center blade assembly

Figure 2

Inner clamp assembly

Inner clamp 3-corner J

Connecting block

Bolt 5X25

Inner clamp U 1

Folding plate supporter

Inner clamp U 2

Folding plate supporter

Inner clamp U 3

Connecting pin

Connecting block

Plate spring R 0.8

Center blade 3-corner J

Bolt 4X2

Plate spring L 0.8

1789S

1790S

Connecting pin

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