WITTON 68E Paper Cutter User Manual

: October 30, 2023
: WITTON

WITTON 68E Paper Cutter

SPECIAL WARNING

It is typically important for paper cutters to use the original fittings.
In this service manual, detailed directions are made for the use of the machine fittings user is concerned about, therefore, it is important for user to install and operate the machine correctly. Otherwise, the use of the machine will be effected, even body safety.
This machine is used for one person to operate, do not put hands under the knife and the clamping bar, otherwise, possible severe injury will occur.

Brief Introduction

The paper pressing and cutting of machine is driven by hydraulic,it is good machine for cutting.It is used to cut small size paper, printed matters and other soft materials similar to paper,it is popular applied to office and light industry of printing.

Paper impeller is driven by the lead screw in the middle under the working table, transmitted by the two guides fixed under the working table in whose system the stiffness is strong, running process is easy. Vertical and parallel adjustment of paper impeller is achieved independently to make the accurate adjustment simple and workable.

The core part in the electrical control system adopts programmable logic controller(PLC) so that making the machine more stable and prolong its service life.

Photoelectric safety protector is adopted in this machine making the operation more safe.
In order to protect the working precision of the machine and prolong its service life, it is important for operators to read this service manual carefully.

Main Technical Specification

Max. cutting width (mm) 680mm
Max. cutting length (mm) 680mm
Max. cutting height (mm) 80mm
Cutting speed (times/ min) 20time/min
Height from the floor to working table (mm) 920mm
Front extended length of working table(mm) 530mm
Max. Cutting pressure ( N ) 10000N
Main motor 1.5Kw
Motor for paper feeding 0.4Kw
Total electric current 10A
Input Voltage 3Phases/380V
Dimension of package 1670×1370×1715mm
N.W.of machine 700KGS

Structure operation and adjustment of machine

Structure (diagram 1)

This machine is composed of electrical control cabinet、hydraulic control cabinet、main part and working table, and includes clamping bar system、cutting drive system、paper feeding system、safety system、 digit-display system、hydraulic system and electrical control system etc

Structure、operation and adjustment of machine

Diagram 1 schematics of paper cutter

machine body
photoelectric protective emission box
working table
full touch computer
eccentric shaft for adjusting knife
photoelectric protective receive box
knife bed
clamping bar
Paper impeller
cutting button
Servo motor
Support screw
Air switch
electrical box
hydraulic system
Foot support
side worktable
pressure hand wheel
Lock knife handle
foot pedal
power supply
Emergency stop

Adjustment of Machine

1). The adjustment of cutting stick

The cutting stick can be used in both sides for four times. Diagram 2 Ejecting device of cutting stick
When the cutting stick is badly worn, you need to adjust the side of cutting stick or change it.
Using eject rod to push-out the cutting stick.(As shown in Picture 2)
After finished the replacement of knife, put the cutting stick into the groove from the front table.In that process the two ends of cutting stick should be put flat and then press cutting stick firmly into the groove.
2). Knife adjustment

Diagram 2 Ejecting device of cutting stick

Knife replacement (shown diagram 3)

Switch off the air(diagram 1.13), first dismantle thesecond and forth screw,insert the handle (diagram 3.1) into the second and sixth hole and screw down,then dismantle other screws,then rotate the handle (diagram 3.1) anticlockwise, take down the knife, please note: buttress the knife to prevent hurting operator.

Diagram 3 schematics of knife dismently

handle
knife
knife changer

Knife installation (shown in the diagram 4)

Switch off the air,first wipe the grinded knife by the cloth, (if the knife edge is rolled up, please grind it by whetstone).Screw the handle into the second and sixth hole,then install the knife grinded well on the wood knife changer (provided by the factory), push the wood knife changer and the knife together to knife installation position in front of clamping bar, make sure that the hook hole of the knife is put onto the hook board, loosen the two handles on the knife, then rotate the wrench, insert the knife onto the knife bed and align with the screw hole, then install the screw and tighten. Take down the wood knife changer and wrench.

**Note:Do not put your arms under knife bed and clamping bar.

Diagram 4 schematics of knife installation**

handle
knife
knife changer

Knife adjustment

Every time install the new knife, or old knife grinded, adjust the height of knife bed by manual in order to adjust the cutting depth of the knife. To avoid the new knife replaced causing accidents because of deep cut due to big height.

To determine the depth of cutting: Lock knife handle (Diagram 19). The clockwise rotation to the end, press the two hands cutting button,and stop the knife bed in the lowest position after one circle of cutting , Then observe if the cutting depth is normal(the normal cutting depth is about 0.5~1mm) . If the blade and the blade end contact, only can be adjusted through the eccentric shaft end knife in front of the machine bed outside hexagonal (Diagram 1. 5) solution; If can not meet the requirement Diagram 5 Knife adjustment of the cutting blade wear later, should loosen the install knife screw straight long hole direction along the blade knife bed down, until completely cut off the paper.
When the blade wears about 12 to 15 mm, you should use the second row of screws hole in the blade. If the blade is worn and unusable after using the second row of screw hole , the blade should be changed. When changing the new blade, Install new blade should be adjusting nut (Diagram 5) transferred to the largest position.

**Note :After adjusting the knife, the knife locking handle should be adjusted to the original position.

Diagram 5 Knife adjustment
**

Adjustment of paper impeller (shown in the diagram 6))
The adjustment of the verticality between the paper push side and working table surface is achieved by adjusting the screw(diagram 6.3).Before adjusting, please little loosen the bolt (6) and screw (8), then rotate the screw clockwise to lift the end of paper impeller, the angle between the paper push side and working table surface reduces; anti-clockwise rotates,the angle expands.After adjustment, you should hold the screw first and fix thebolt (6) firmly, and then lock the two screws (8).
$\).Adjustment of paper impelle$
Diagram 6 Structure of paper impeller

Paper impeller
Paper shelf
screw for adjustment
conic gasket
ball gasket
Screw M10*60
Support shaft
Screw M10*40
Adjust block (left)
left support of paper impeller
adjust block (right)
right support of paper impeller
bottom frame plate
baffle
Cylindrical pin
Screw M8*35

Regulation on paper and blade parallelism is by adjusting the adjusting screw (Diagram 6 side view 3), before the adjustment should be slightly loosen the screw (8) and two screws (16), then adjust the adjusting screw (Diagram 6 side view 3), and test paper with blade parallelism is qualified. After adjusted the need to hold the screw (8) and will tighten up the two screws (16).
The back limit of paper impeller is controlled by limit switch,front limit is controlled by PLC.
4).Adjustment of main motor
When adjusting the tension of synchronization belt on working table,first loose the M8×25,move the bottom board of motor right,the synchronization belt will tighten,otherwise,it will loose.when adjust to the position needed,tighten the M8×25.
5). The adjustment of the compression spring
This machine consists of three location with compression spring, Adjust the compression spring after easing tight degree directly affect the reset of knife bed and paper weight；Adjust the tight, Reset the better, Machine load is heavier(Should be properly adjusted).

Note: the compression spring can adjust the minimal size （If beyond the limit of size, the machine will directly damage)
A) knife on the left side of the bed, compression spring on both ends of the smallest distance is not less than 160 mm.
B) knife on the right side of bed, compression spring on both ends of the smallest distance is not less than 230 mm.
C) paper weight ,compression spring on both ends of the smallest distance is not less than 270 mm.

The use of the machine

Encls computer manual.

Electrical control principle

Power directions

The power supply is three-phase three-wiring 380V, 50HZ.Electrical current 10A, the voltage of electromagnetic clutch is DC 24V, photoelectric protective voltage is AC 15V.

Working principle of program controller

The machine adopts advanced alternating digit servo control technology, liquid crystal display screen, data resolution factor 0.01mm, with self disturbance- diagnosis and running pattern display, dynamic cutting display, running situation, dynamic follow-up, and memory.

IR photoelectric protection device

The minimum distance between light beams in photoelectric protection device：38mm
Resolution factor of photoelectric protection device: 50mm
In front of paper cutter installed IR photoelectric protection device, there are two photoelectric boxes, the left one sends out light beams to the right one which senses the left light beam, cutting control system runs normally. If the light beam is stopped, the power for control system will be cut off, the electromagnetic clutch switches off, worm brakes to stop the knife base running.

Note: photoelectric protector is installed in the box where there are not parts available for user checking, so please do not dismantle or adjust it.

Warning: before running the machine and knife replace or after knife replacement in every shift, the
efficiency of the photoelectric protector must be checked and make a report for that at a regular time.

Lubrication Maintenance and care

Be careful:In order to ensure the paper cutter run well, keep the worki 去 ng precision and prolong its service life, you should lubricate it and clean it very often, this is very important.

Lubrication of paper cutter

Each lubricating position and method refer to attached diagram 7、8

schematics of lubrication (front view)

Lubrication、Maintenance and care
schematics of lubrication (back)

⚫ add 3# lithium lubrication twice time everyday
▲ add 3# lithium lubrication one time each week
◆ add N32# hydraulic oil to oil scale level,replace each year.

adopt N46 mechanical oil in oil lubricating points
3# lithium grease for grease lubricating points

Maintenance and care

before every shift (shift change or stop in midway then go on working), main parts in paper cutter should be checked and lubricated.
after every shift, do some cleaning to the machine, wipe its friction surface and lubricate them.
normally, complete cleaning and check should be made every two weeks.
if the paper cutter is not used for a long time, bright surfaces must be wiped clean, use some rusty oil, cover the machine with plastic cover
if the paper cutter is not used for more than three months, the rusty oil should be covered by moisture-proof paper.
when dismantling the paper cutter for checking and repairing, forbid to adopt unsuitable tools and operating methods.

Choice of hydraulic oil

suitable working temperature for this machine: 5~35℃，adoptL-HM46 abrasion-proof hydraulic oil.
oil temperature: 10~65℃

if conditions do not meet the requirements, hydraulic oil used in hydraulic box is varied by the surrounding temperature and hydraulic oil of different viscosity is chosen.The volume of hydraulic box is 8 L, hydraulic oil should be changed regularly, at the first time, it should be changed after 200 hours, in future it is changed every half a year. When pouring oil, the oil tank and hydraulic components in it should be cleaned, the oil must be clean.

Thank you for using brand paper cutter! For any further information about technical assistance or comments, please do not hesitate to contact us by the following details:
Add:Industrial park,zhenglou,pingyang,wenzhou city,China
Tel:+86-577-63787777 Fax:+86-577-63787770 Email:guowei@guowei.org
Remarks: because of continuous improvement on this machine, all the technical parameters are subject to change without any additional notice.

Safety check routine after everyday shift and knife replacement

Machine and its model| | Serial No.|
---|---|---|---
Manufacturer’s name|
User’s name|
User’s address|
Safety establishments| Checking information and measures to be taken
Photo-electric protective device|
Cutting brake clutch device|
Cutting device operated by double hands|
Safety cover|
Single acted protective function|

Operator: managed by

Note:

The qualified operator who should be trained before can do this work.
If in the above safety check any of one establishment can not obtain the requirement, the operator must report it to the person who is in charge and stop using this machine immediately.
The operator must finish safety check after everyday shift and knife replacement to keep the machine be a good state and avoid it damaged when it is working.
The above list must be signed by the person who is in charge for this work in order to monitor the working done successfully.
P.S: The two lists are drafted for your reference, and they can be designed by yourselves for your file.

Safety check record after a quarter or half a year for paper cutter

Machine and its model| | Serial No.|
---|---|---|---
Manufacturer’s name|
User’s name|
User’s address|
Safety establishments| Checking information and measures to be taken
Photo-electric protective device|
Cutting、clutch、brake and driving device|
Safety device of knife bed and testing switches|
Cutting device operated by double hands|
The pressure of pressing paper (including Max or Min.)|
Time-relay knife replacement|
Single-run protection|
Other mechanical, pneumatic and hydraulic parts|
Other electrical parts|

Checked by the engineer: mechanical: Electrical: functionary in facility department: