Alfamacchine Minigraf 4 manual 

Minigraf 4

INSTRUCTION HANDBOOK

Minigraf 4

Alfamacchine

Via Selva 23/25 - 47100 Forlì - Italy

Tel. +39-0543-783301 - Fax +39-0543-783302

[email protected] - www.alfamacchine.com

Minigraf 4

Index

1. GENERAL INFORMATION 3

1.1 PRODUCER 3

1.2 ASSISTANCE CENTERS 3

1.3 CERTIFICATION 3

1.4 WARRANTY 3

1.5 PRE-ARRANGEMENTS CHARGED TO THE CUS-

TOMER 3

1.6 HANDBOOK STRUCTURE 3

2. MACHINE DESCRIPTION 5

2.1 WORKING PRINCIPLE 5

2.2 MAIN COMPONENTS 5

2.3 MACHINE STRUCTURE 5

2.4 DIMENSIONS 5

2.5 SURROUNDING CONDITIONS 5

2.6 LIGHTING 5

2.7 VIBRATIONS 5

2.8 NOISE EMISSIONS 5

2.9 TECHNICAL DATA 6

2.10 STANDARD EQUIPMENT 6

2.11 ELECTROMAGNETIC AMBIENT 6

3. SAFETY 7

3.1 GENERAL WARNINGS 7

3.2 SCHEDULED USE 7

3.3 INADVISABLE USE 7

3.4 DANGEROUS AREAS 7

3.5 PROTECTION DEVICES 7

3.6 STOP FUNCTIONS 7

3.7 SAFE WORKING PROCEDURES 7

3.8 RESIDUAL RISKS 8

3.9 PLATES 8

4. INSTALLATION 8

4.1 SHIPPING AND HANDLING 8

4.2 STORAGE 8

4.2 STOCCAGGIO 8

4.3 PRELIMINARY ARRANGEMENTS 9

4.4 UNPACKING 9

4.5 CONNECTIONS 9

4.6 PRELIMINARY CONTROLS 10

4.7 MACHINE ARRANGEMENT 10

4.8 ADJUSTMENTS 11

4.9 ITEMS TO CHECK BEFORE USING THE MACHINE14

5. FUNCTIONING 15

5.1 OPERATORS 15

5.2 FUNCTIONING DESCRIPTION 15

5.3 TIPS FOR PERFECT JUNCTIONS 15

5.4 MACHINE STOP 16

5.5 MACHINE REINSTATEMENT 16

5.6 PUTTING OUT OF SERVICE 16

6. MAINTENANCE 17

6.1 STATE OF MAINTENANCE 17

6.2 MACHINE ISOLATION 17

6.3 SPECIAL PRECAUTIONS 17

6.4 CLEANING 17

6.5 LUBRICATION 17

6.6 ORDINARY MAINTENANCE 17

6.7 EXTRAORDINARY MAINTENANCE 18

7. DIAGNOSTIC 19

7.1 SAFETY WARNINGS 19

7.2 TROUBLESHOOTING 19

8. SPARE PARTS 21

8.1 SPARE PARTS LIST 21

8.2 SPARE PARTS ORDERING 21

9 DEMOLITION 21

9.1 DEMOLITION 21

10. ATTACHMENTS 21

10.1 DECLARATIONS 21

10.2 SCHEMES 21

*This machine is equipped with a frontal safety guard as standard equipment to comply with CE regulations

for the EUROPEAN MARKET.

It can be supplied for other markets on request for and additional charge.

Minigraf 4

1. GENERAL INFORMATION

1.1 PRODUCER

The firm Alfamacchine can boast more than 10 years of

experience in the construction of Woodworking Machines.

It has acquired technological know-how, developed during

years of researche in strict touch with manufacturing

departments and international commercialization. We offer

the best warranty that anyone can grant to its customers.

TEL 39-0543-482711 FAX 39-0543-480770

1.4 WARRANTY

ALFAMACCHINE’s products are constructed to have a long

life and are tested one by one.

If, in spite of this, if there is any damages or malfunctions,

the replacement of defective parts is warranted (counting

from the date written on the sales invoice) for a period of:

- 24 months for mechanical components

- 12 months for pneumatic part

The driver blade is tested for about 1.000.000 working

cycles.

The Warranty does not include the sending of technical

staff.

Warranty repairs will be performed at ALFAMACCHINE

plants and the freight of shipment will be entirely charged

to the Customer.

Warranty does not cover damages caused by an inappropriate

use of the machine or not corresponding to the instructions

described in this handbook.

The warranty is voided in case of unauthorized

modifications or because of accidental damages or

tampering performed by unauthorized personnel.

The warranty is also voided if you use v-nails different

from the original ALFAMACCHINE ones.

To take advantage of warranty services it is necessary, at

the moment you receive your machine, to fill out the

warranty card and send it back as soon as possible to

ALFAMACCHINE.

The warranty will be valid only after the ALFAMACCHINE

receives & records your warranty card.

1.5 PRE-ARRANGEMENTS CHARGED TO

THE CUSTOMER

It is the customer’s duty, on times agreed with the producer,

to execute what is indicated in our documentation.

Things normally charged to the customer:

•Premises predisposition, included building works

•Pneumatic supplyng of compressed air (see the

paragraph 4.5)

1.6 HANDBOOK STRUCTURE

The customer must pay extreme attention to the information

reported in this handbook, because the proper Pre-

Arrangement, Installation and Use of the Machine,

constitute the basis of a correct customer-distributor

relationship.

1.6.1 Object and contents

The goal of this handbook is to provide to the customer all

necessary information so that He would be able to run it in

complete autonomy and safety. The handbook contains

information concerning the technical aspects, machine

working and standby, maintenance, spare parts and safety.

Before making any operation on the machine, the qualified

technicians and operators must carefully read these

instructions. In case of doubt about the correct interpretation

of these instructions, ask your distributor to explain it to

you.

1.6.2 Utilizers

This handbook is made both for operators and technicians

authorized to use or repair the machine.

The operators can not execute operations reserved to the

qualified technicians.

The producer does not answer to damages derived from

not-observing this prohibition.

1.6.3 Preservation

The instruction handbook must be kept very close to the

machine, in a special container protected from liquids and

whatever could compromise its legibility

1.3 CERTIFICATION

The machine is produced in conformity to the pertinent

European Community Norms in force at the moment of its

introduction on the market.

1.2 ASSISTANCE CENTERS

ALFAMACCHINE is represented in North & South America

by a and prepared sales organization. Contact us directly

for the name & number of your closest distributor.

For every need regarding Use, Maintenance or Request of

Spare Parts, the Customer should call their distributor.

Minigraf 4

1.6.4 Symbols utilized

P...

A...

O...

I...

C...

R...

WARNING

OBSERVATION

INQUIRY

EXAMINATION

ADJUSTMENT

It indicates a danger with a mortal risk for the operator

It indicates a warning or a note about key functions or

useful information. Pay the maximum attention to the

paragraph marked with this symbol.

It is requested to take a measurement data, to check a

signal,....

The user is requested to check the proper positioning of

any element of the machine, before operating a certain

command

It’s necessary to consult the handbook before performing a

certain operation

In case of a strange working and/or anomalies, can be

requested a certain mechanical adjustment and/or electrical

setting

DANGER

Minigraf 4

2.2 MAIN COMPONENTS

The main components of the machine are:

- Frontal clamping device to have perfect junctions.

- Adjustable tilting fences.

- Magnetic pressure pads of several types to provide the

proper clamping of any profile

- Soft moulding clamp device that adjusts the pressure

during the several working phases.

- Dual function foot pedal for separate control of clamping

and nail insertion

- Pneumatic opening of the V-nail magazine for very

quick reloading

- Nail heads sizes 7, 10 and 15 mm.

2. MACHINE DESCRIPTION

2.3 MACHINE STRUCTURE

The direction the machine will move while working is listed

below:

- XAXIS

Movement of the horizontal clamp

- YAXIS

Movement of the vertical clamp

Picture 2. 1 A - Movement directions

2.4 DIMENSIONS

The overall dimensions are reported on table 2.9-A

2.5 SURROUNDING CONDITIONS

The machine does not need special surrounding conditions.

It has to be installed inside an industrial building, lit, aired

and with a compact and flat floor. The admitted temperatures

go from 5° to 40° C, with an humidity not higher than 50%

at 40° C or 90% at 20° C.

2.6 LIGHTING

Premises lighting must be conformed to the norms in force

in that Country where the machine is installed. It has to

guarantee clear visibility and can’t create dangerous light

reflections.

2.7 VIBRATIONS

In standard conditions conformed to the indication of

machine proper utilization, the vibrations do not create

dangerous conditions.The average quadratic weighed level,

according to the acceleration frequency to which arms are

exposed does not exceed 2,5 m/s2.

2.8 NOISE EMISSIONS

The machine is designed and projected for reducing the

noise emission level to its source. In standard working

conditions the Machine noise power level is:

Acoustic Continuous Equivalent weighed

pression A <70dB

Acoustic Istantaneous weighed

pression <130dB

The noise levels indicated are emission levels and do not

represent operating levels. In spite of an existing

relationship between emission levels and exposure ones,

this can not be used in a reliable way to define if further

precautions are necessary. The factors determining the

exposure level to which the working force is subjected,

include exposure length, working premises characteristics

and other noise sources (number of machines, closed area,

etc…). Furthermore the allowed exposure levels could

change according to several different Countries. At any

rate, the information provided, will allow the Machine

Operator to achieve a better evaluation of the danger and

risks they are submitted to.

The indicated noise levels are emission

ones measured in standard conditions of

use. In case of any machine modification,

the above mentioned levels could be

changed and should be tested on the same

machine.

2.1 WORKING PRINCIPLE

The frame assembling machine Minigraf 4 has been realized

for the production of medium or large sized frames.

The machine is equipped with a V-nail driver mounted on

a movable carriage which can be pneumatically controlled

by the operator.

The frame assembling machine Minigraf 4 can use special

“Pulling Power” V-nails which draw the corners very tight

together.

Minigraf 4

2.9 TECHNICAL DATA

We have listed below the Machine data and technical

characteristics to which you can make reference for any

eventual contact with your distributor for Technical

Assistance.

TABLE 2.9.A - Technical data

Frames thickness min.-max. mm 6-70

Frames width min.-max. mm 10-90

V-nail magazine capacity n. 220

V-nail size mm 7-10-15

V-nails size on request mm 3-5-12

Pneumatic supplying BAR 4-6

Weight ca. kg 36

Height of working bench mm 130

Overall dimensions mm 350x550x320

2.10 STANDARD EQUIPMENT

The equipment listed below are the standard parts.

2.10.1 Standard accessories

Once you have removed the packaging, please check the

presence of following accessories:).

- N.1 nail head mm. 7

- N.1 nail head mm.10

- N.1 nail head mm.15

- N.1 L shaped pressure pad

- N.1 Rounding pressure pad

- N.1 Allen Wrench 5mm

- N.1 Brass rod magnet

2.10.2 Upgrading and implementing of mechanical

parts

The machine has been designed following a modular

criterion, therefore the existing equipment can be further

upgraded with additional accessories that will not alter its

basic structure.

Technical upgrades on the machine model, if any, will be

such that they can be installed at any time without requiring

any substantial modifications to the machine structure.

2.10.3 Optional accessories

•Floor stand

•Wooden working bench extension

•Metallic working bench extension

•Special fences for octagons

•Special fences for hexagons

•Round and square pressure pads in rubber

•V-nails claw heads size 3-5-12 mm.

•Double mechanical pressure pad

•Triple mechanical pressure pad

2.10.4 Customized optional accessories

Thanks to its versatility this machine can be ‘custom-made’

to meet our users requirements. With additional accessories,

you can make frame assembling easier. ex: special fences

for peculiar moulding shapes, special clamps to ensure the

mouldings are locked properly during V-nail firing, and so

on.These can be special made for you at your local machihne

shop.

2.11 ELECTROMAGNETIC AMBIENT

The Machine is designed to operate properly in an

industrial electromagnetic ambient without altering it being

an exclusively pneumatic machine.

Minigraf 4

3. SAFETY

3.1 GENERAL WARNINGS

The operator must read paying the maximum attention to

the information written in this Handbook, expressively

about proper precautions for Safety listed in this chapter.

It is advisable for the operator to follow the warnings listed

here below:

•Keep the machine and the working premises clean &

ordered

•Provide appropriate containers to stock the pieces you

are going to work with.

•Use the Machine only in normal psycho physical

condition

•Wear adequate clothing to avoid obstacles and/or

dangerous entanglements to/from the machine

•Wear the individual protection gears described in the

instructions handbook

•Do not remove or alter the warning plates and adhesive

signs

•Do not remove or elude the Machine Safety Systems

•Keep the fingers away from the working area

•Disconnect the air pressure supply during any

maintenance intervention

•Keep the feet separated from the pedal during the

Machine maintenance

3.2 SCHEDULED USE

The Machine is designed and built to assemble junctions

of frames.

The machine is projected for manual use only (under

operator control).

3.4 DANGEROUS AREAS

The area of frames assembly is defined as the “working

area”

The dangerous areas of machine, include the movable parts

and surrounding zones

Figure 3.4.A- Working area and dangerous zones

3.5 PROTECTION DEVICES

The machine is equipped with adequate protections for

persons exposed to the risks of using this machine, taking

into consideration the working parts (driver blade, horizontal

clamp, vertical clamp).

3.6 STOP FUNCTIONS

The machine stop functions are the following:

•Fast clutch fitting stop (Category 0).

•Foot pedal Stop (Category 1).

STOP CATEGORY 0

It is obtained disconnecting the fast clutch fitting from

feed system (uncontrolled stop).

STOP CATEGORY 1

Controlled stop obtained by lifting the foot from the

pneumatic pedal that does not allow the v-nails to drive.

The other risks related with using the machine are:

- Finger crushing in the vertical clamp working area

- Finger crushing in the frontal clamp working area

It is necessary to follow carefully the following

instructions:

1 Keep the fingers away from frontal and vertical clamp

working areas

2 Disconnect the air pressure during any maintenance

interventions

3 Keep the foot away from the pedal during machine

repairs

The machine is projected and realized to

eliminate any risk connected with its use.

The user s requested to achieve an adequate

training to be instructed by their local

distributor .

3.7 SAFE WORKING PROCEDURES

3.3 INADVISABLE USE

The machine can not be used for:

•For uses different from those listed in 3.2 paragraph

•In an explosive or aggressive atmosphere, where there

is a high density of dust or oily substances suspended

in the air

•In a flammable atmosphere

•Outside in all weather severity

•For working materials not suitable with the machines

characteristics

3.8 RESIDUAL RISKS

During the normal working cycle and while performing

maintenance, the operators are exposed to several residual

risks that, because of the operations own nature, can not be

totally eliminated.

•Risk of finger crushing in the working areas of the

vertical and frontal clamps

3.9 PLATES

The warning plates carrying out safety functions can not be

removed, covered or damaged.

To view the plates or adhesive signs location, consult the

Fig.10.2-D

Table 3.8 A- Types of plates

Plate concerning the machines characteristics

Adhesive sign concerning the fingers

crushing area

Adhesive sign concerning the behaviour to be kept

during the working cycle

Adhesive sign concerning the behaviour to be kept

during the working cycle

4. INSTALLATION

4.1 SHIPPING AND HANDLING

The shipment must be performed by a professionally

qualified staff. The machine has to be shipped in a safe way

to avoid any damage to its parts.

•All the protections and guard devices must be properly

closed and locked.

•The machine has to be shipped like positioned for

installation.

•Before shipping it is necessary to lubricate the parts

that are not painted to avoid their detriment.

•According to the type of shipment, it is necessary to

protect the machine from any jarring impact or stress

Figure 4.1A – machine handling indications

Machine total weight: about 36 Kilos

4.2 STORAGE

In case of long inactivity, the machine must be stored with

the proper precautions concerning storage place and times.

•Store the machine indoors

•Protect the machine from jarring impacts and stresses

•Protect the machine from humidity and high

temperatures

•Store the machine away from corrosive materials

•Lubricate the parts which are not painted

Any damage of the machine caused during its shipment or

handling is not covered under warranty.

Repairs or replacements of damaged parts are charged to

the customer.

Lifting the machine must be

performed by 2 operators.

4.3 PRELIMINARY ARRANGEMENTS

In order to install the machine it is necessary to prepare a

working area adequate to the machines dimensions.To fulfill

the characteristics of precision and steadiness, the bench

frame assembling machines must be positioned on a solid

and level table able to sustain the weight of the machine.

4.4 UNPACKING

The machine, bench version, is shipped & packed in an

appropriate carton and protected by polystyrene parts.

Remove the external packing and save it for a future use.

Check for any casual shipping damage and report it

immediately. Shipping damages or any other defects must

be reported to

Alfamacchine

within and not later than 3

days from the receipt of the machine.

4.5 CONNECTIONS

To avoid any problems during the setup of the machine,we

suggest you follow the instructions listed here below.

4.5.1 Pneumatic connection

The machine uses compressed air and is controlled by a

dual action foot pedal.

The 3 pipes for comp ressed air connected with the pedal

must be inserted into the 3 fittings located on machines

right side in the following sequence (fig. 2-3):

Use the supplied fast clutch fitting to connect the machine

to the air compressor system. You could use also another

fitting suitable with your pneumatic system (see fig. 2).

Once you have connected the machine with the pneumatic

system, check the proper operation of the foot pedal in the

following ways:

•The foot pedal pressed half way down activates the

horizontal and vertical clamp

•The foot pedal pressed full down activates the V-nail

driver

It is advisable to install a filter/ lubricator on

the air compressed system to provide clean

and lubricated air. Use only silicone

lubricating oil for pneumatic systems. The use

of inadequate oil could damage the valves.

Upper connection Red pipe into the red

fitting (external side)

Center connection Black pipe into the black

fitting(center fitting)

Lower connection Transparent pipe into the

3rd fitting(user side)

Picture. 1

Picture 2

Picture 3

Minigraf 4

Check the foot pedal operation when the

V-nail magazine is closed. The foot pedal

control is deactivated when the V-nail

magazine is opened.

4.6 PRELIMINARY CONTROLS

The Machines setup should be perofrmed by a technician

appointed from the customer. Before the starting to use the

machine , it is necessary to execute certain verifications

and checks to prevent mistakes or accidents during setup.

•Verify that the machine has not been damaged during

the assembly steps.

•Verify with extreme care, the pipes integrity

4.7 MACHINE ARRANGEMENT

4.7.1 V-Nails magazine loading

To load the V-nail magazine proceed as follows:

•Move the clawpusher backwards by flipping the special

lever located on the right side of the machine. This will

give you access to the V-nail magazine (see fig. 4).

•Insert one or more V-nails strips into the magazine,

taking care that the glue side faces up and that they are

loaded with the V of the V-nails pointing in the direction

indicated in the figures 5 and 6. Check that the V-nail

size is suitable with the type of claw head mounted.

•Move the claw pusher forward by flipping the control

lever (see fig.4)

4.7.2 V-nail guide head replacement to change V-

nails size

The V-nail guide head must be changed each time you use

V-nails of different sizes.

Proceed as follows to replace it:

•Loosen the locking screw of the V-nail guide head using

a 5 mm Allen wrench. (The screw is on the opposite

side from the V-nails magazine(See fig. 7)

•Remove the V-nail guide head (Claw head)

•Move the claw pusher backwards by flipping the special

lever located on the right side of the machine. This will

give you access to the V-nail magazine (see fig. 4).

•Remove all the V-nails that are still in the magazine

(using the proper brass magnet, if necessary).

•Insert the new V-nail strip(of desired height) into the

magazine

•Move the claw pusher forwards by flipping the control

lever (see figure 4).

•Insert the new size V-nail guide head to match the V-

nails to be used (see fig. 6).

•Tighten the locking screw of the V-nail guide head (see

fig.5).

Picture 5

Picture 6

Picture 4

Minigraf 4

Pic 7

Pic. 8

Pic. 9

Pic.10

4.8.1 Setting stops for V-nails positioning

The Minigraf 4 is equipped with a movable driver assembly

that is shifted to the different the V-nail inserting positions.

The limit stops which are located on the machine’s working

bench, determine the V-nails insertion points.

The positioning of these stops can be changed by means of

the handles placed on each stop (fig. 11-12).

The correct measurement of each position is easily set by

means of a measurement gauge that refers to the distance

between each postion and the vertex.

The operator can shift the driver assembly by pressing the

special lever located on the right side of the working bench

(fig. 13-14).

The Minigraf 4 is produced in versions at 2 or 3 positions

(respectively 2P and 3P).

The inserting positions are marked as X and Z in the 2P

version; X, Y and Z in the 3P one.

ATTENTION: When the machine is not

working, the driver assembly is positioned

in the X position: to change it, it is

necessary to shift the driver assembly to

the next positions (Y or Z).

TAKE CARE: In the 3P machine it is

recommended that you use the X and Z as

extreme positions and Y always as the

middle one.

Picture 11

4.8 ADJUSTMENTS

The machine was completely tested and checked at

ALFAMACCHINE before its shipment, the operator has to

peroform only the following adjustments:

Minigraf 4

Pict. 12

Pict 13

Pict. 14 Pict16

Pict. 15

4.8.2 Vertical clamp adjustment

The vertical clamp can be adjusted in height and position.

Proceed as follows to adjust them:

4.8.2a Vertical clamp position adjustment

•Position the mouldings to be assembled on the working

bench

•Select the pressure pad suitable with the profile of the

moulding to be assembled and put it on the vertical bar

•Loosen the handle (see fig.15), this will allow the clamp

to shift forward or backward so it puts the pressure pad

directly over with V-nail inserting point.

•Tighten the handle once you have reached the proper

position

4.8.2b Vertical clamp height adjustment

•Loosen the handle which is located on the side of the

clamp (see fig. 16)and adjust the pressure pad height

over the frame until it is between 5 - 8 mm above the

moulding. This will help prevent any accidental

crushing of your fingers.

•Tighten the handle once you have reached the proper

position

•Lower the vertical clamp by pressing half way down on

the foot pedal to verify that the mouldings to be

assembled are properly clamped

•Press all the way down on the foot pedal to insert the V-

nail.

4.8.3 Frontal clamp adjustment

The Frontal Clamp (horizontal clamp) has a series of holes

in the flat bar (see fig.17).

Lift the bar upwards to move it forwards and backwards.

To lock the bar it is sufficient to insert it onto the peg

located in the middle of the guide channel.

Proceed as follows to position the frontal Clamp correctly:

1. Remove the bar from the peg (lifting it up by about 10-

15 mm) and move it forward until it touches the

moulding (see fig.18);

2. Lower the bar into the channel & onto the peg.

Minigraf 4

Pict. 17

In case of continued use without

needing to remove the frontal clamp

from its position, it is possible to fix it

to the peg using the proper screw.

During machine transport, it is

advisable to fix the bar using the

supplied knob.

4.8.4 Working pressure adjustment

The working pressure must be adjusted to the hardness of

the mouldings to be assembled.

The pressure regulation allows you to change the clamping

pressure of mouldings to be assembled.Too high of a working

pressure can cause a poor assembly (especially on small-

size frames) and the possibility of crushing the moulding.

Too low of a working pressure can cause an incomplete

insertion of V-nail into the frame.

The working pressure is adjusted by means of the regulator

on the panel near the pressure gauge (see fig. 21).

Proceed as follows to adjust the working pressure:

1. pull up on the regulator cap by about 3-4 mm to unlock

2. turn it clockwise to increase the pressure and counter-

clockwise to decrease it.

3. push the regulator cap back down, to lock it into

position

The above listed values apply to 7 and 10 mm high V-

nails.Increase the pressure by 10 % for 15 mm high V-

nails.When stacking 2 or more V-nails, increase the working

pressure by about 10-15 %.

The suggested pressures are:

Soft woods (samba,........) 1.5 - 2.0 Bar

Medium (ramin,........) 2.0 - 3.0 Bar

Very hard woods (oak) 3.0 - 5.0 Bar

Pict 18

Pict. 20

Pict. 19

4.8.4 Fence adjustment

The machine is equipped with a special fence composed of

2 different parts.

Each fence side is equipped with a knob that allows it to tilt

the moulding supports.

Furthermore, if the moulding rolls forward or backwards as

the front clamps engages, you can adjust the tilting fence

to compensate for the defect (fig.18).

In addition to 90 degree frames , the Minigraf 4 can also be

used for 6-sided (120 degrees) or 8-sided frames (135

degrees), by properly positioning the fence (fig. 19-20).

Proceed as follows to modify the position of fence supports:

· use a 5 mm Allen wrench and remove the outside screw;

· loosen the inside screw slightly and position the fence

into the tapped holes located on the working bench.

The proper positioning of the fence can be obtained by

using a special square,which is included with your

machine.Care must be taken to ensure that the 120° or

135°angle is perfectly centered on the internal vertex of

the V-nail head.

Minigraf 4

4.9 Items to check before using the

machine

Once the machine has been properly installed check that:

•The magazine is loaded with the type of nails suitable

with the moulding to be assembled

•The claw head matches up with the chosen V-nail size

•The limit stops of the driver assembly are positioned in

the selected points and properly locked (see chapter

4.8.1)

•The pressure pad is placed on the magnetic support

•The vertical and frontal clamps are properly positioned

Fig. 21

Proceed as follows to adjust the protection shield:

1. loosen the 2 knobs on both sides of the protection and

raise or lower it until it is about 6-8 mm from the top of

the moulding.

2. tighten the knobs to lock the protection shield.

You can purchase the guard as an option for your machine.

Even if the protective shield is properly adjusted, it is

necessary to respect the following instructions:

3 keep your fingers away from the frontal and vertical

clamp working area

4 disconnect the pressure supply during any maintenance

intervention

5 keep the foot separated from the pedal while adjusting

the machine

•The working pressure is adequate to the wood hardness

•The limit stops are properly set (see chapter 4.8.3)

•The protective shield is properly positioned (see chapter

4.8.6)

In order to improve the clamping of large

moulding sizes or very hard material we

recommend you use a multiple clamping

device (double/triple mechanic or double

hydraulic clamps)

Opening the guard deactivates the foot pedal

Minigraf 4

5.2 FUNCTIONING DESCRIPTION

The Minigraf 4 is a 3 position machine. This machine has

been realized for small and medium size production runs.

The machine has only one possible operating mode:

•Manual functioning using the pneumatic foot pedal

and the pneumatic lever which controls the movement

of the driver assembly.

Pressing the pneumatic foot pedal half way down causes

the clamping of the mouldings.

Pressing the pneumatic foot pedal full down causes it to

drive a v-nail.

The control lever permits the movement of V-nail driver

assembly

•Pressing the lever half way down causes the driver

assembly to move from the 1st to the 2nd inserting

position; pressing it all the way down causes it to shift

to the 3rd inserting position.

To assemble a corner, operate as follows:

1. Set the insertion position handles

(see chapter 4.9.1)

2. Position the moulding to be assembled on the working

bench

3. Adjust the vertical clamp height and positioning ( see

chapter 4.9.2)

4. Adjust the frontal clamp position

(see chapter 4.9.3)

5. Check & adjust the clamp pressure according to the

hardness of the material to be assembled(see chapter

4.9.5)

5. FUNCTIONING

5.1 OPERATORS

The machine has been projected to be used by only one

operator.

The staff assigned to operate the machine, must be in

possession (or acquire through an adequate training) the

requirements indicated below. In addition they must have

knowledge of this handbook and of every information

concerning safety:

•General and technical culture sufficient to comprehend

the handbook contents and understand the drawings

and schemes

•Knowledge of main sanitary, technological and anti-

accidental norms

•Overall knowledge of the line and plant where the

machine is installed

•Specific experience in assembling frames

•To know how to operate the individual protections

devices and how to stop the machine in case of an

emergency

The Maintenance people, in addition to the above

mentioned characteristics, must be in possession of an

adequate technical education. 5.3 TIPS FOR PERFECT JUNCTIONS

a) V-nail types

In order to allow the machine to make excellent quality

junctions using different materials, it has been necessary

to manufacture different V-nails types for different uses

(see attachment D).

V-nails can be classified in three different groups:

for soft woods and

soft plastic

for medium woods

for hard woods

Suggested V-

nail code

Suggested V-

nail code

Suggested V-

nail code

b) Assembling positions

It is advisable to operate as follows in order to achieve the

best results in terms of junction quality:

Never drive V-nails near the junction vertex. The

minimum recommended distance from the external

vertex is at least 10 mm.

When you want to make the junction using only one V-

nail, the most suitable position is in the middle of the

moulding (see fig. 23)

In case you want to insert 2 or more V-nails into each

junction, we recommend you to insert the most external

one 1/3 from the external vertex and the most internal

one 1/4 from the internal vertex.

6. Press half way down on the foot pedal and verify the

proper positioning and clamping of the mouldings

7. Press the foot pedal full down to insert the V-nail (if the

mouldings profile needs 2 or more V-nails stacked in

the same position, release the foot pedal halfway and

then press it again to insert the 2nd V-nail and so on)

8. Release the pedal halfway

9. Press the lateral lever halfway to position the V-nail

ejection group in the next inserting point

10. Press the foot pedal full down to insert

the V-nail (see step 7)

11. Release the pedal halfway

12. Press the lateral lever all the way down

so the driver assembly shifts to the last

insertion point

13. Press the foot pedal full down to insert

the V-nail (see step 7)

14. Release the foot pedal completely to release

the vertical and the frontal clamps.

Minigraf 4

figure 23

5.4 MACHINE STOP

The machine can only work by pressing the pneumatic foot pedal; to stop it is enough to lift the foot from the pedal.

It is also possible to disconnect the fast clutch fitting from the compressed air.

5.5 MACHINE REINSTATEMENT

The machine reinstatement is performed by pressing the pneumatic foot pedal.

5.6 PUTTING OUT OF SERVICE

In case on long inactivity periods it is necessary to disconnect the fast clutch fitting from the pneumatic system.

Minigraf 4

Unsuitable lubricants may cause valve

seal problems (seals may become too

large) and consequent Valve jamming.

6. MAINTENANCE

6.1 STATE OF MAINTENANCE

The maintenance operations must be performed with the

machine in the conditions described at the “state of the

machine” in the tables 6.6.A and 6.7.A

6.2 MACHINE ISOLATION

Before performing any type of maintenance or repair , it is

necessary to isolate the machine from the following

supplying sources:

1) Disconnect the fast clutch fitting from the pneumatic

system.

Once you have finished the maintenance intervention &

before reconnecting the pneumatic supply, make sure that

any & all components and any pneumatic connections are

properly reinstalled.

6.3 SPECIAL PRECAUTIONS

During the maintenance or repair operations is suggested

to proceed as follows:

•Before starting any operation place a sign “machine

under maintenance” in a highly visible position

•Do not use solvents or flammable materials

•Do not step on the machine parts, because they have

not been manufactured to sustain the weight of people.

•Once all the operations are finished, reinstall the

protections or shields you removed or opened

6.4 CLEANING

The machine structure is simple and robust therefore the

mechanical parts do not require any special maintenance.

It is advisable to follow the rules listed below:

•Regularly remove glue or other residues from the V-

nail head and from the upper part of the driver blade;

•Always keep the V-nail magazine clean

•Remove any residue from the V-nail guide “L” shaped

support.

Do not use water to clean the machine, otherwise the metal

parts may rust.

Before performing any cleaning

intervention, the operator must disconnect

the pneumatic system..

6.5 LUBRICATION

Preferably CASTROL MAGNA GC 32 or equivalent oil

Furthermore, we recommend you lubricate the driver blade

every 200 working hours.

6.6 ORDINARY MAINTENANCE

The following operations must be executed at the times

indicated below. Not observing the following instructions

exonerate the Producer from any responsibility regarding

the warranty.

The operations described below, even if simple, must be

executed by qualified personnel.

The ordinary scheduled maintenance includes overhauls,

checks and interventions that will help prevent stops and

breakdowns.

•Lubrication state of the machine

•Wear and tear parts state

Minigraf 4

Table 6.6.A - Ordinary Maintenance

Maintenance

V-nail driver blade

Movable parts lubrication

V-nail claw heads

“L” shaped supports (V-nail guide)

Description

Replacement every 1.000.000 V-nails shot

Lubricate the driver blade every 200

working hours

Replacement every 5.000.000 V-nails shot

Machine state

Isolation for maintenance

6.7 EXTRAORDINARY MAINTENANCE

Listed below are the operations that need the intervention of ALFAMACCHINE , your distributors Technical Assistance (see

the paragraph 1.2) or by qualified staff authorized by the Producer

The extraordinary maintenance includes interventions to be performed in exceptional cases:

•Breakage

•Revisions

MAINTENANCE

Valves and Reducers

Frontal and vertical clamp gaskets

DESCRIPTION

Suggested replacement every 6/8 million

of V-nails shot

Replacement in case of air leaks

MACHINE STATE

Isolation for maintenance

TAB. 6.7 A

Minigraf 4

7. DIAGNOSTIC

7.1 SAFETY WARNINGS

The interventions must be performed by personnel properly trained and must take all precautions in order to avoid accidental

starts.

7.2 TROUBLESHOOTING

TROUBLE