Singer NP050101 Manuale utente

SINGER

INDUSTRIAL

PRODUCTS

SERVICE

MANUAL

for

the

SINGER

Needle

Positioner

and

Underbed

Thread

Trimmer

Catalog

Numbers

NP050101

and

NP050103

—

Fordetails,

call

your

Industrial

Sales

Office,

or writeThe

Singer

Company,

Industrial Products Division,30 Rockefeller Plaza, New York, N.Y. 10020

THE

SINGER

COMPANY

INDUSTRIAL

PRODUCTS

DIVISION

'A Trade

Mark

ofThe

Singer

Company

by The Singer Company

All

Rights

Reserved

Throughout

the

World

Printed

in U.S.A.

From the library of: Superior Sewing Machine & Supply LLC

TABLE

CONTENTS

Paragraph

Title

Page

SECTION

I -

GENERAL

INFORMATION

1-1 PURPOSE 1

1-2

FEATURES 2

1-3

BASIC COMPONENTS 2

SECTION

II -

INSTALLATION

2-1

GENERAL INFORMATION 3

2-2

PREPARATION

OF SEWING

TABLE

2-3

POWER

TRANSMITTER

2-4

OPERATING

SWITCHES

2-5

SEWING

HEAD

2-6

COMMUTATOR SENSOR 10

2-7

POSITIONER

CONTROL

CONSOLE

2-8

TRIMMER

PACK

ASSEMBLY.

2-9

RIMMER

SOLENOID

ASSEMBLY

2-10

THREAD

WIPER

SECTION

III -

OPERATION

3-1

GENERAL INFORMATION 20

3-2

PRE-OPERATING CHECKS 20

3-3

OPERATION 20

SECTION

IV -

SERVICING

AND

ADJUSTMENTS

4-1

GENERAL

INFORMATION

4-2

CLEANING INSTRUCTIONS 22

SECTION

V -

TROUBLESHOOTING

5-1

GENERAL

INFORMATION

5-2 Needle Not

Positioning

Properly

5-3

Faulty

Trimming

Double

Triggering

Solenoid

Assembly

...

5-4

Bobbin Thread

Cut

Too

Short

5-5

Needle

Thread

Cut

Too Short 25

5-6

Needle

Thread Pulls

Out

Needle

From the library of: Superior Sewing Machine & Supply LLC

LIST

ILLUSTRATIONS

Figure

Title

Page

1 S

inger

Needle

Positioner

and

Underbed

Trimmer

Equipped

Sewing

Machine

2 Sewing Table

Top

3 Operating Switches 5

Heel

Switch

Installation 6

5Foot

Trim

Switch Installation.• 7

Knee

Trim

Switch Installation 8

7Slo-Sew Switch 8

8Operating

Switches

Assembly

and

Wiring

Data

Commutator

Sensor

lOA

&B Positioner Control Console 12

1lA &B

Trim

Pack Thread Picker Installation 14

Trim

Pack Thread Picker Installation 15

IID

Thread

Picker

Adjustment

12 Setting of

Trimmer

Knife

Trimmer

Solenoid

Assembly

14A

Trimmer

Solenoid

Adjustments

Procedure

Thread Wiper J9

16 Operating Controls

From the library of: Superior Sewing Machine & Supply LLC

Catalog

No,

NP050101 refers to

Machine

Nos, 281-41

and

281-43.

Catalog

No.

NP050103

refers to

Machine

No.

281-61.

SECTION

1 -

GENERAL

INFORMATION

PURPOSE

The

Underbed

Trimmer

and

Needle

Positioner,

figure

has

been

developed

The

Singer

Co.

Increase

the

efficiency,

speed

and

accuracy

ofa

sewing

machine

operator

working

on apparel manufacturing.

The

operator

need

not position the

needle

and

cut

top

and

bottom

threads

hand.

Instead

the

operator

merely

touches a knee switch or a foot treadle and the positioner/trimmer does this auto

matically,

thus

accomplishing

automatic

positioning,

and

trimming

both

top

and

bottom threads of material being sewn.

TRIM

PACK

THREAD

PICKER

ASSEMBLY

(HIDDEN)

SOLENOID

PACKAGE

COMMUTATOR

SFWCJOR

POSITIONER

CONSOLE

Figure 1

. .SINGER Needle Positioner and Underbed

Trimmer

Equipped Sewing Machine

From the library of: Superior Sewing Machine & Supply LLC

1-2.

FEATURES

The Underbed

Trimmer

and

Needle

Positioner has the following advantages:

INCREASED

PRODUCTION

....

Increased output because needle

positioning and underbed trimming of top and bottom thread is •

fast

and

automatic.

FLEXIBILITY.

.When Positioner/Trimmer is not required,

the

unit

con be switched

off

and

the

sewing machine

can

be operated conventionally, since the unit does not require

special fittings.

RELIABILITY.

...

Exclusive

solid-state

electronic

controls,

and quality components coupled with outstanding mechanical

design and construction throughout, provide the utmost in

reliability.

SIMPLICITY

OF OPERATION... .Operators con be trained

quickly and easily.

Response

time is fast, and controls are

designed for fast easy operation. The unit can position one

stitch at a time - to "slowsew" (available as an option).

Operator may select either Needle Position

Down

- or

Needle

Position

and Trim.

EASE

OF MAINTENANCE... .Maintenance and periodic

inspection of the

Positioner/Trimmer

can be

accomplished

very easily.

The

electronic portion of the Positioner/

Trimmer

is incorporated into two compact, rugged printed

circuit

boards.

1-3.

BASIC

COMPONENTS

The Underbed Trimmer and Positioner consists of the following subossemblies:

Trimmer Assembly

Trimmer Solenoid Assembly

Harness Assembly consisting of

(1) Heel Switch

(2) Trimmer Switch (foot or knee switch)

From the library of: Superior Sewing Machine & Supply LLC

(3)

Slow

Sew

Switch (optional)

Needle

Positioner Assembly

Commutator Sensor Assembly

Thread

Wiper

Assembly

SECTION

n -

INSTALLATION

2-1.

GENERAL

INFORMATION

This

Section will describe the physical installation of the subossemblies that

make

up the complete Underbed

Trimmer

and Positioner.

CAUTION

This machine should operate from

110-115 volt source

only.

Electricity should be shut off during

installation

until

instructed

otherwise.

NOfE

not attempt to operate

from

one leg of a 220 volt line.

2-2.

PREPARATION

OF SEWING

TABLE

(See Figure 2)

Package table will have the cutout for double v-belt pulley, the large holefor

the

needle

positioner

leads

and the elongated

hole

for

the

thread

wiper

cable

and

lamp cord.

NOTE

For field

installation,

dimensions for

cutout

and holes

are

shown in Figure

2-3.

CLUTCH

MOTOR

If the Underbed Trimmer and Positioner assemblies

are

to be added to a standard

sewing

machine

and

table, it

will

necessary

remove

the

motor

and

mount

it exactly 1 inch (1") to the left of the standard position.

From the library of: Superior Sewing Machine & Supply LLC

MACH

3-1/4

1-1/2

DIA.

HOLE

RIGHT

SIDE

TABLE

3/8

MIN

BELT

SLOT

8-15/16

4-7/8

TABLE

5-13/16

(3)

(.228

DIA.

HOLES)

NO.

DRILL

DEEP

MIN.

Figure

2,...Sewing

Table

Top

2-4.

OPERATING

SWITCHES

All

operofing

switches

ore

shown

in the illustration.

Figure

3. It

should

noted

that the

sewing

machine table

has

the

Pitman

rods,

basic foot treadle and

linkages to the

power

transmitter, in place.

From the library of: Superior Sewing Machine & Supply LLC

KNEE

TRIMMER

SWITCH

TREADLE

SWITCH

TRIMMER

FOOT

SWITCH

SLOW-SEW

SWITCH

TREADLE

Figure

3...

.OperaHng Switches

2-4-1.

HEEL

SWITCH.

. .The purpose of the heel switch is to activate the needle

positioner. Since the heel switch is

mounted

on the Pitman rod, when the

treadle is firmly heeled, the heel switch is activated. If the heel switch has

not

been

mounted on

the

Pitman

rod,

refer to Figure 4 for its proper position

and proceed as follows:

Remove

clamp

from

standard Pitman rods. Pitman rod should

be mounted

extreme outside position of power transmitter

Install

heel

switch

as shown in Figure

From the library of: Superior Sewing Machine & Supply LLC

2-4-2.

TRIM

SWITCH

(See Figure 3)

The

Trim

Switch

isa

universal

type that can be

used

either for knee operation,

mounted

under table or as a foot switch

when

slipped on treadle

rod

to left of

treadle.

Foot

Trim

Switch

mounted

the

left

the

treadle.

When

treadle is firmly heeled and the foot

trim

switch is depressed,

the machine will position up and trim.

Knee

Trim

Switch

mounted

under

the

table.

When

activated

the

knee,

the

machine

will

position

and

trim.

If the

trim

switch has not been installed on the sewing table proceed as

follows:

PITMAN

ROD

(TO

MOTOR)

SCREW

ADJUST

PITMAN

ROD

(TO

TREADLE)

Figure

4...

.Heel

Switch Installation

"a"

set

screw

COLLAR

HEEL

PRESSURE

adjust"

From the library of: Superior Sewing Machine & Supply LLC

2-4-2-1.

Foof

Type

(See

Figure

(a)

Loosen

clamp

screws

for freadle support

rod

and

slide to

right.

(b) Slip foot switch over rod and locate several inches to

left

treadle

to suit

operator.

2-4-2-2.

Knee

Type

(See

Figure

(a) Locate and pilot drill holes for

wood

screws according

location

shown in Figure

(b) Mount switch bracket with

wood

screws, "B".

(c)

loosening

clomp

screws

"A", the

switch

may

moved to the left or right or rotated forward or bock

to suit operator. Tighten clomp screws.

(d)

loosening

screws

"C", the knee

switch

may

moved

up or

down

to suit operator. Tighten clamp

screws.

2-4-3.

The

Slo-Sew

Switch

is physically the

same

as the

trim

switch

and

mounts

on treadle rod to the right of the treadle. (See Figure 7)

TRIMMER

SWITCH

TREADLE

Figure

5...

.Foot

Trim

Switch Installation

From the library of: Superior Sewing Machine & Supply LLC

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