PERPETUUM EBNER PE 2020 - Functional Description; Speed Control and Selection Mechanism; Control Lever and Actuator Operation; Pick-up Arm Movement Automation

28 pages

Save Page as PDF

To Next Page

To Next Page

To Previous Page

To Previous Page

Loading...

2

Functional

description

Speed

control

The

speed

is

selected

by

means

of

a

speed

selec

tor

knob

(6)

that

is

rigidly

united

with

the

speed

selector

cam

(86).

The

speed

selector

cam

(86)

moves

the

idler

wheel

support

(83)

to

the

correct

height

with

respect

to

the

motor

pulley

(125).

Speed

precision

control

This

adjustment

is

possible

at

any

speed.

A

knurled

knob

(8)

provided

below

the

speed

selector

knob

(6)

moves

the

idler

wheel

support

(83).

The

four

steps

of

the

step

pulley

(125)

corresponding

to

the

four

turntable

speeds

are

tapered.

When

adjusting

the

precise

speed

±

3

%,

the

idler

wheel

(61)

must

engage

in

the

middle

of

the

step

pulley

(125).

The

knurled

knob

(8)

has

a

red

mark

that

must

be

positioned

exactly

midway

between

+

and

—

when

making

this

adjustment.

Control

lever

Movement

of

the

control

lever

(32)

operates

the

starting

lever

(197)

through

a

brass

switching

roller

(176)

that

is

mounted

on

the

control

lever

bottom

assembly

(175).

The

starting

lever

(197)

frees

the

ON/OFF

switch

(179)

so

that

the

motor

(126)

is

connected

to

power

and

starts

running.

The

idler

wheel

(61)

is,

at

the

same

time,

pressed

against

the

drive

shaft

(125)

of

the

motor

(126)

and

against

the

inside

rim

of

the

turntable.

The

control

lever

(32)

releases

the

spring-loaded

ratchet

lever

(192)

which

is

thus

allowed

to

advance

the

reject

lever.

The

cam

of

the

spinning

turntable

(1)

engages

the

ad

vanced

tip

of

the

reject

lever.

The

control

cam

(128)

is

thereby

turned

to

such

an

extent

that

the

pinion

of

the

turntable

meshes

with

the

toothing

of

the

control

cam

(128).

Following

one

control

operation,

all

the

control

elements

are

moved

to

the

position

required

for

the

following

function,

Pick-up

arm

movement

The

rising

portion

of

the

cam

track

of

the

control

cam

(128)

causes

the

feed

lever

(150)

to

lift

the

pick-up

arm

(10)

by

means

of

the

lift

rod

(57).

At

the

same

time,

the

pick-up

arm

(10)

is

frictionally

engaged

and

is

then

moved

by

the

succeeding

horizontal

movement

of

the

feed

lever

(150).

Down

the

descending

portion

of

the

cam

track

the

pick

up

arm

(10)

is

lowered

and

disengaged

from

the

feed

lever

(150).

Item

No,.

6

8

61

82

83

85

86

125

EE

Description

Speed

selector

knob

Knurled

knob

Idler

wheel

Drawspring

for

idler

wheel

Idler

wheel

support

Shift

fork

subassembly

Speed

selector

cam

Motor

pulley

Idler

wheel

height