Former section components

Fordrinier wireBack liner

Wire 1

TopFormer FUnder liner

Wire 2

TopFormer FTop liner

Wire 3

C B

A

Fordrinier wire (back liner = wire 1)Headbox

Wire runout signaling unit

Rotary piston regulator with palm unitMist collecting pan

(Future use)

TopFormer F (under liner top = wire 2)

Headbox

Wire

Exhaust duct (Headbox area)

Rotary piston regulator with palm unit

Wire runout signaling unit

Mist collecting pan(Future use)

TopFormer F (top liner = wire 3)

HeadboxExhaust duct (Couching area)

Mist collection pan(Future use)

Wire runout signaling unit

Rotary piston regulator with palm unit

Wire

Exhaust duct (Headbox area)

Suction couch roll (Drive)

#1 Wire drive roll #1 Stretch roll(Pivoted wire roll)

#2 Stretch roll(Pivoted wire roll)

Roll – Back liner (Wire 1 components)

#2 Wire drive roll

Brest roll

Wire guide roll

#2 Wire roll

#1 Wire roll

Roll – Under liner top (Wire 2 components)

Breast rollWire drive roll (Reversing roll)

Couch cylinder roll (Drive)

Stretch roll(Pivoted wire roll)

(Drive)

Wire guide roll

Lifter roll (Pivoted wire roll)

Roll – Top liner (Wire 3 components)

Breast rollWire drive roll (Reversing roll)

Couch cylinder roll (Drive)

Lifter roll (Pivoted wire roll)

Wire guide roll

Stretch roll(Pivoted wire roll)

Drainage Element – Back liner (Wire 1 components) 1

Forming board

Hydro foil box (10-Blades)

Vacuum step foil box

2-chamber wet suction box

Inlet suction box

Outlet suction box

Drainage Element – Back liner (Wire 1 components) 2

Wire support deflector

2-chamber flat suction box

Drainage Element – Under liner top (Wire 2 components)

　　 Forming board

　　 Hydro foil box (7-Blades)

　　 Vacuum step foil box

　　 2-chamber wet suction box

　　 1-chamber flat suction box

Drainage Element – Top liner (Wire 3 components)

　　 Forming board

　　 Hydro foil box (10-Blades)

　　 Vacuum step foil box

　　 2-chamber wet suction box

　　 1-chamber flat suction box

Outlet suction

box

Doctor – Back liner (Wire 1 components) 1

Brest roll doctor(DST)

Self weight doctor

Doctor – Back liner (Wire 1 components) 2

Double doctor (DST)

Self weight doctor

Doctor – Under liner top (Wire 2 components)

Breast doctor(DST)

Self weight doctor

Doctor – Top liner (Wire 3 components)

Breast doctor(DST)

Self weight doctor

Shower – Back liner (Wire 1 components) 1

Breast showerDeckle showerMoistening shower for drainage element

HP shower for wire cleaning

Chemical shower

LP shower

Shower – Back liner (Wire 1 components) 2 Deckle jet (Trimsquirts)

Tail squirts

Suction couch roll shower inside

Moistening shower for drainage element

HP shower for suction couch rolloutside

Knock-off shower

Edge knock-off shower

Wire edge cleaning shower

LP shower

Couch Pit

Shower – Under liner top (Wire 2 components)

Deckle showerMoistening shower for drainage elementLP shower

Wire edge cleaning shower

Breast shower

HP shower for couch cylinder roll

Starch spray HP shower

for wire cleaning

Chemical shower

LP shower

Shower – Top liner (Wire 3 components)

Deckle shower

Wire edge cleaning shower

Breast shower

HP shower for couch cylinder

LP shower

Starch spray

Chemical shower

HP shower for wire cleaning

Moistening shower for drainage element

LP shower

LP shower

Saveall

Saveall for wire 2

Saveall for wire 1

Saveall outlet for wire 1

Saveall outlet for wire 1

Saveall outlet for wire 1

Saveall outlet for wire 2

Middle saveallfor wire 2

Saveall for wire 3

Saveall outlet for wire 3

Saveall under reversing roll

Outlet of middle saveall for wire 2

Middle saveall for wire 3

Movement

Breast Roll Lifter

Loose breast nutby hand tool

Store to holder

Swivel down by air motor and

worm gear jack

Wire Change

Remove the spacer blocks

C6C4

C2

C1

C3

C5

C7

C8

C9

To change Wire 1

To change Wire 2Wire 3

1st

2nd

Remove the spacer blocks

Detail of removable block

Swing bolt

Removable block

(aluminum)

Loose swing bolt, Swivel down.

Then insert Hyd. Jack.

Hyd. Jack

Lift up stand by Hyd. Jack.

Take out removable block.

ReleaseHyd. Jack.

Take out Hyd. Jack.

To hand pump

C5

C6C7

C8

C9 C1

C2

C3C4

All lifter rolls are in minimum (loose) position

Installation position of hydraulic jacks

C5

C6C7

C8

C9 C1

C2

C3C4

Hydraulic jack

Installation position of hydraulic jacks

Hydraulic jack

C5

C6C7

C8

C9 C1

C2

C3C4

Position of wire box before framing

Roll Wire pole bracket (guide)

WalkwayWalkway bracket

Handrail

Wire box

Framing

Wire poles in wire loop

(2) Wire poles

(3) Wire loop(1) Winding pole

Push wire poles (2) into wire loop (3), starting with the rounded ends.

Remove winding poles from wire.

2FL

Wire on wire pole bracket (wire 1)

(1) Wire polebracket (guide)

(2) Wire pole

(4) Wire

(3) Wire pole stand

1) Hang a wire pole (2) by means of crane with rope sling, then put it on the wire pole bracket (1) and wire pole stand (3).

2) After securely stored wire pole, take out rope sling. 3) Repeat above procedure at rest of wire poles.4) Fasten clamps at those points on the wire at which the wire cannot be drawn

in over the cross walkways.

Wire pole position (wire 1)

C1

C2

C3C4

C5

C6C7

C8

C9

Wire pole

Installation position of hydraulic jacks (wire 2)

C2

C3C4

Hydraulic jack

Wire on wire pole bracket (wire 2)

(1) Wire pole bracket (guide)

(2) Wire pole (4) Wire

(3) Wire pole stand

(5) Building wall,front side

1) Hang a wire pole (2) by means of crane with rope sling, then put it on the wire pole bracket (1) and wire pole stand (3) which located at front side wall (5).

2) After securely stored wire pole, take out rope sling. 3) Repeat above procedure at rest of wire poles.4) Fasten clamps at those points on the wire at which the wire cannot be drawn

in over the cross walkways.

Wire pole position (wire 2)

C2

C3C4

Wire pole

Installation position of hydraulic jacks (wire 3)

C6C7

C8

Hydraulic jack

Wire pole position (wire 3)

C6C7

C8

Wire pole

Operation

1. Operation and Setting

2. Start-up

3. Shutting down

Start-up

Conduct checks after starting

Proceed as follows to star up the forming section.

Prepare wires mechanically

Conduct checks before starting

Put forming section into operation

Prepare the wires mechanically

5. Adjust wire tension by moving stretche roll.

Prerequisite

1. Switch on safety switch (power switch).

2. Move breast rolls into operating position, breast roll nuts tightened.

3. Move lifter rolls into operating position.

4. Move Top Former F couch cylinder roll into stand-by position

Checks before starting

The following checks have to be made before starting the forming section:

- Eyebolts at spacer blocks properly tightened.

- Hydraulic jacks at spacer blocks removed

- Signaling units installed and adjusted

- Spray angle of showers adjusted

- Guards properly installed

- No contact between the wires, with the exception of TopFormer F

- Wires in central position on the wire guide rolls

- Alarm devices and emergency-off switches are ready for operation

- Unhindered movement of doctors and showers

- Transport routes and walkways cleared from tools, hoses, etc. lying around

- Remote controlled shower valve shall be AUTO mode

- Doctor oscillator shall be AUTO mode

Putting the forming section into operation

1. Set doctors.

2. Open low pressure shower valve.

3. Open edge cleaning and deckle shower valve.

4. Open edge knock-off shower valve.

5. Open knock-off shower 50A valve as back #1 wire drive roll cleaning shower.

6. Open suction couch roll inside shower valve and sealing water valve.

7. Open and adjust the suction couch roll air load tube line.

8. Activate heating and ventilating system.

9. Open drainage element moistening showers.

10. Switch wire drives to crawl speed.

To be continued...

11. Check doctor oscillators.

12. Check HP showers and oscillators.

13. Check deckle jet and tail squirts.

14. Check wire run and wire tension.

Putting the forming section into operation

15. Increase wire speed slowly to operating speed.

16. Activate fan pump (for back liner, first activate dilution fan pump, then fan pump).

17. Move couch cylinder roll into operating position as soon as wires run synchronously.

18. Check and adjust wire tension.

19. Activate vacuum system.

20. Switch on stock pump.

21. Check knock-off shower

Checks after starting

The following checks have to be made after starting the forming section:

- Showers in operation (except chemical shower).

- Swinging sensors in central position

- Centered wire run

- Wire tension

- Vacuum in drainage elements

- Doctors adjusted correctly and functioning

- Doctor discharge openings free

Shutting down

1. Open knock off shower valve.

2. Switch off stock pump.

3. Switch off vacuum system.

4. Move couch cylinder rolls into stand-by position.

5. Deactivate fan pump (for back liner, first deactivate fan pump, then dilution water fan pump).

6. Switch off wire drives.

7. Deactivate showers and oscillators.

8. Lift off doctors.

9. Deactivate heating and ventilating system.

10. Adjust wire tensions to 0 kN/m.

11. Carry out cleaning.

12. Carry out inspection.

Operation procedure

Operation procedure

Operation procedure

Operation procedure

ALARM EDGE GUIDE

TENSION CONTROL

Wire Guide Operation Panel

Back Layer Pneumatic Valve Stand

Back Layer Pneumatic Valve Stand Piping Diagram (1)

Back Layer Pneumatic Valve Stand Piping Diagram (2)

Under Top & Top Layer Pneumatic Valve Stand

Under Top & Top Layer Pneumatic Valve Stand Piping Diagram

Deckle ShowerFlexible Hose

WIRE WIDTH5950

STOCK

Tail Squirt

WIRE WIDTH5950

Tail Squirt

TAILPAPER WEB

Nozzle(Traversable)

Web width into press section5550

TRIM

TRIM

TrimSquirts

The cutting angle (production angle P) is adjusted by the tilting device which is below the positioning unit or by distortion of the nozzle stick. To turn the nozzle stick loose the hexagon socket screw (1) in advance.

Nozzle stick

TrimSquirts - Adjusting the cutting angle

Variant 1:Pivot identic cutting point.After angle setting the cutting pointremains in the slit of the pipe suction.

1 2

Variant 2:Pivot not identic cutting point.After an angle setting the cutting pointmoves on the wire the distance ds andchanges the distance nozzle to wire.The nozzle stick can be turned byloosening of screw.(see picture in previous page).

Angle setting with a manual nozzle stick

P = Production angle F = Angle drive tender side angle

Nozzle angle

Nozzle adjustment

Production direction

With a double jet nozzle the cutting breadth can be adjusted individually.

Roll – Suction Couch Roll

Deckle

Air tubeAir tube

Suc.Zone 1

Suc.Zone 2

Roll – Couch Cylinder Roll

The couch cylinder roll unites the webs.

Seam

Roll – Wire guide roll

Wire

Wire guide roll on front side

Pneumatic cylinderFor auto guide

Rotary piston regulator with palm unit

Support for wire guideHandle for

Manual guide

The wire guide roll measures the wire tension and corrects the lateral wire run error.

Wire guide roll on FS Wire guide roll on DS

Wire guide roll on drive side

Pivoted point

Load cell

Roll – Pivoted wire roll

The pivoted wire roll is used as a stretcher roll to tension the wire or as a lead-out roll to separate the wires.

Pivoted arm

Roll

Spindle-type lifting elements(Worm gear jack)

Drainage elements – Forming board

The forming board supports the wire from below at the headbox. In addition, it dewaters the suspension and removes air bubbles which have been trapped between suspension and wire while the suspension has been applied.

Wire

Breast roll

Baffle stripSecondary strip

Vertical adjustmen

tdeviceMain body

Bracket

Horizontal adjustment

device

Dovetail profile

The vacuum step foil box dewaters the suspension.

Drainage elements – Vacuum step foil box

Wire

Vertical adjustment

device

Main body

Bracket

Dovetail profile

Valve

End deckle

Plastic strip

Ceramic stripwith FRP body

Longitudinal girder

Detail of Blade

The 2-chamber wet suction box dewaters the paper web.

Drainage elements – 2-chamber wet suction box

Ceramic strips

End deckle

Valve

Cleanout cover

Vertical adjustment

deviceWire

Longitudinal girderMain body

Bracket

Dovetail profile

Drainage elements – Inlet suction box

The inlet suction box dewaters the suspension.

Main body

Vertical adjustment

device

Cleanout cover

Longitudinal girderDovetail profile

Bracket

Ceramic stripsEnd deckleValve

Wire

Drainage elements – Outlet suction box

The outlet suction box dewaters the suspension.

Main body

Vertical adjustment

device

Cleanout cover

Longitudinal girderDovetail profile

Bracket

Ceramic stripsEnd deckleValve

Wire

Drainage elements – Wire support deflector

The wire support deflector prevents the wire from sagging.

LonCeramic strips

The 2-chamber flat suction box dewaters the paper web.

Drainage elements – 2-chamber flat suction box

Ceramic strips

End deckle

Valve

Cleanout cover

Vertical adjustment

device Wire

Longitudinal girderMain body

Bracket

Dovetail profile

The 1-chamber flat suction box dewaters the web.

Main body

Vertical adjustment

device

Cleanout coverLongitudinal girder

Dovetail profile

Bracket

Ceramic stripsEnd deckleValve

Wire

Drainage elements – 1-chamber flat suction box

Drainage elements – Hydrofoil box

The Hydrofoil box dewaters the suspension

Main body

Vertical adjustment

device

Longitudinal girderDovetail profile

Bracket

Ceramic strips with FRP body

Wire

Ex:) Hydrofoil box 10-blade

The beast roll doctor cleans the breast roll surface.

Doctor – Breast roll doctor (DST)

Breast roll doctor

Turnbuckle

Oscillating device

Breast roll

Air tube

Pivot

The double doctor cleans the suction couch roll surface.

Doctor – Double doctor for suction couch roll (DST)

Suction couch roll

Turnbuckle

#1 Doctor blade

Drain outlet

#2 Doctor blade

The doctor cleans the surface of the roll and directs any dirt and shower water laterally away from the wire.

Doctor – Self weight doctor

Pan typeBox type

Pivot pointCenter ofgravity

Roll

Doctor blade

Doctor back

Discharge opening at drive side

Roll

Doctor blade

Center ofgravity

Pivot point

Doctor back

Adjusting the lead-out roll (lifter roll)

Under liner top wire lifter roll

Transfer suction box between Under liner top and Top wire

Top wire

Top wire lifter rollUnder liner top wire

Back wire Transfer suction box between Top and Back wire

The distance between lead-out roll and Top wire is approx. A = 34.2 mm.The distance between lead-out roll and Back wire is approx. B = 70 mm.

B

A

Swinging the breast roll into operation position

Tighten breast nut by hand

tool

Swivel up by air motor and worm

gear jack

Breast nut