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Replacing Spare Parts Drive Unit – Feed Axis Replacing t he Feed Axis Toothe d Belt [03047690 -xx] 28 Ser vice Manual SIPLACE WPC4 See also: J 4.2.1 Procedure - Calibrating the Feed Axis [ J  66] X The two ends of the t…

Replacing Spare Parts

Replacing the Feed Axis Toothed Belt [03047690-xx] Drive Unit – Feed Axis

Service Manual SIPLACE WPC4

Removal/installation

X Move the catch feed axis with the toothed belt

into a suitable position for service work (at the

front, in the transfer area).

X Loosen the two fastening screws (1) sealed

with locking varnish, at the tensioning device

with the deflection pulley (3).

X Loosen (do not remove) the tensioning

screw (2) - sealed with locking varnish - on the

tensioning device. This relaxes the toothed

belt.

X Loosen the 4 fastening screws (4) on the catch

unit (5). The two ends of the toothed belt are

fixed to this.

X Carefully remove the catch unit (5). This

toothed belt is now loose.

X Note how the toothed belt is run, so that you

can fit it again correctly later on. Pull the

toothed belt over the two deflection pulleys

(back and front) and out of the WPC4.

X Remove the tensioning device and deflection

pulley (3), so that you can feed in the new

toothed belt more easily. To do this, loosen the

two fastening screws (1).

X Insert the toothed belt into the WPC4 at the

transfer position and run it from the tensioning

device (1) to the deflection pulley (4). The

toothed belt should exit below the bottom

deflection pulley (3).

X Place the end of the toothed belt around the

back deflection pulley (3) and insert into the

clamping unit (5).

X Place the other end of the toothed belt around

the deflection pulley of the tensioning unit (2)

and run as far as the clamping unit (5).

X Fit the tensioning device with deflection pulley

and fix into place with the two fastening

screws.

Replacing Spare Parts

Drive Unit – Feed Axis Replacing the Feed Axis Toothed Belt [03047690-xx]

28 Service Manual SIPLACE WPC4

See also:

4.2.1 Procedure - Calibrating the Feed Axis [

J

66]

X The two ends of the toothed belt must be

inserted into the clamping unit (2) so that the

clamping unit teeth engage with the belt teeth.

The two ends must meet (1).

X Note the length of the new toothed belt. The

toothed belt is 2120 mm long/ number of teeth:

424.

X If the belt is too long, shorten it to the correct

length.

X Fit the catch unit onto the clamping unit (2).

The four screws must be secured with Loctite

241.

X Tighten the 4 fastening screws crosswise with

a torque of 1,3 Nm.

Final work

The catch unit must be adjusted so that it is

straight (adjust at fastening screws). Make sure

that it does not rub against any parts or jam at any

point of the travel range.

X Set the catch (1) to a distance of approx.

0.5 mm (3) to the white plastic guidance (2).

X Push the catch back and forth along the travel

range, to check that it does not rub against any

parts or jam at any point.

X Set the correct belt tension. See also section

(3.4.5 Setting the Feed Axis Belt Tension

J

29) .

X Calibrate the feed axis.

Replacing Spare Parts

Setting the Feed Axis Belt Tension Drive Unit – Feed Axis

Service Manual SIPLACE WPC4

3.4.5 Setting the Feed Axis Belt Tension

Tools/equipment

 Setting gauge, small [03052363-xx] (1)

 Setting gauge, large, collision light barriers

[03051814-xx] (2)

 Belt tension measuring device [00326015-xx]

with instruction guide

Measurement setup - measuring the feed

axis belt tension

Please note, that the bridge cover has been

removed in this diagram.

X Push the two setting gauges (1) + (2) under

the toothed belt, at a distance of 360 mm.

 The large setting gauge (2) is against the

tower cover (6).

 The teeth of the toothed belt (3) must lie on the

setting gauge.

X Press the large setting scale downwards with

a suitable object or with your finger, so that the

toothed belt lies on the gauge (5).

X Adjust the belt tension. To do this, gently pull

the toothed belt or tap it with an Allen wrench,

so that it starts swinging and then measure the

value with the belt tension measuring device.

 The belt tension must be 85 Hz. +/-5 Hz..