OHTAKE NSRI Series User manual

Japan Quality since 1968
AUTOMATIC SCREW FEEDER
NSRI SERIES
User Manual

Read these instructions for the proper use of this machine. After having read these
instructions, keep them in a convenient place so you or the operator can refer to them
whenever necessary.
ATTENTION : www.ohtake-root.co.jp is the only web site associated with our company. 􀀃
We do not have any branches in China.

3
Contents
1Overview of this machine............................................................................................................ 5
2Before use....................................................................................................................................... 5
3Operating precautions................................................................................................................. 6
4Name of Machine parts................................................................................................................ 9
5Adjustments and checks before use ......................................................................................10
5.1 Checking the model number of the body ......................................................................... 10
5.2 Basic operation...................................................................................................................... 12
5.2.1 Amount of screws to be loaded ............................................................................... 12
5.2.2 Loading the screws..................................................................................................... 13
5.2.3 Turning ON the power ............................................................................................... 13
5.3 Checking and adjusting the brush...................................................................................... 14
5.4 Checking and adjusting the passing plate ........................................................................ 15
5.5 Checking and adjusting the rail vibration ......................................................................... 16
5.6 Checking and adjusting the holding plate ..................................................................... 18
5.7 Checking and adjusting the front/rear sides of the rail ................................................. 19
5.8 Checking and adjusting the timer ...................................................................................... 20
5.9 Installing the additional “Nejikura” Screw hopper .......................................................... 21
6Maintenance.................................................................................................................................22
7Parts adjustments and replacements ....................................................................................23
7.1 Replacing and Adjusting the Brush .................................................................................... 24
7.2 Replacing the main motor ................................................................................................... 25
7.3 Operation Timing After Replacing the Main Motor ........................................................ 26
7.4 Replacing the rail................................................................................................................... 27
7.5 Replacing the passing plate ................................................................................................ 28
7.6 Replacing and adjusting the escaper and the robot escaper guide ............................. 29
7.6.1 Replace the escaper and robot escaper guide....................................................... 30
7.6.2 Check and adjust the position of the robot escaper guide. ................................ 31
7.6.3 Adjust the escaper notch position........................................................................... 32
7.6.4 Explanation of the escaper movement before adjusting the sensor ................ 34
7.6.5 Checking and adjusting the sensor.......................................................................... 36
8Operational check.......................................................................................................................37
9Application with Robotic System............................................................................................38
9.1 Installation with Robotic System........................................................................................ 38
9.2 External output signals ........................................................................................................ 39
9.3 Robotic operations ............................................................................................................... 40
10 Miscellaneous...............................................................................................................................41
10.1 Overload Protective Circuit.......................................................................................... 41

4
11 Troubleshooting..........................................................................................................................42
12 Specifications............................................................................................................................... 45
12.1 Technical sheet............................................................................................................... 45
12.2 Replacement parts......................................................................................................... 47
12.3 External mechanical dimensions ................................................................................. 48
13 Warranty........................................................................................................................................49
13.1 Product Warranty........................................................................................................... 49
13.2 Disclaimer........................................................................................................................ 49

Overview of this machine
5
1Overview of this machine
Thank you very much for selecting our Automatic Screw Feeder "NSRI series". This machine,
with the screwing robot, can line up screws (M-1, M-3) and supplies them one by one to an
automatic machine to help streamline screw tightening.
Different sizes of screws can be used by changing the rail, escaper, passing plate and the robot
escaper guide. It can be used wherever there is a power source for an AC adapter.
2Before use
Please check for the following accessories before operating the machine.
•Operation Manual 1 copy
•AC Adapter 1 unit
•Screwdriver 1 piece
•Hexagonal Wrench 1 piece
•Ground Wire 1 piece
The design, performance and specifications are subject to change without prior notice for the
sake of improvement.

Operating precautions
6
3Operating precautions
This manual contains safety alert, symbols and signal words to help prevent injuries to the user
or damage to property.
Indications
WARNING:
This indicates there is a chance of death, serious injury or fire if the instructions are
not followed.
CAUTION:
This indicates there is a chance of personal injury or damage to property if the
instructions are not followed.
Symbols indicating type of danger and preventative measures
Prohibited operation. Never do this!
Do not disassemble, modify or repair
Do not touch with wet hands
This indicates to stop operations
Unplug power supply from wall outlet
General caution
Attach the ground wire by loosening the screw near the mark of the equipment.
Bottom of the main body

Operating precautions
7
WARNING
Do not disassemble the AC adapter as there is a risk of electric shock, fire or malfunction.
Do not damage, alter or change the power cord. Do not place heavy objects on the cord. Do
not pull hard on the cord or twist the cord as it could be damaged, thereby causing a risk of
fire or electric shock.
Do not handle the AC adapter with wet hands as it could cause an electric shock.
When using an outlet with AC100 ～240V, don't overload the electrical circuit.
Do not modify or remodel this machine as this may cause a fire or electric shock.
Stop operating the machine and unplug the AC adapter from the wall outlet when you
detect overheating, smoke, a pungent odor or any other unusual condition, as there may be
a risk of fire or electric shock. Contact the dealer, from which you purchased the machine,
and have it examined and repaired.
In the case of a thunderstorm, stop operating the machine, turn off the power and unplug
the AC adapter from the wall outlet. If there is lightning and thunder nearby, move away
from the machine and do not touch it or the AC adapter.
After the thunder stops, and when it is safe to do so, check the machine. If there is any
abnormality, contact your dealer.
When performing maintenance, changing parts or when you sense an abnormality in the
machine, turn the power off and pull the AC adapter from the wall outlet.
In addition, there are parts that become hot in the circuit board. When performing
maintenance around the circuit board, turn off the power for at least 5 minutes before
performing work. There is a risk of burns.

Operating precautions
8
CAUTION
Use only the AC adapter supplied with this machine otherwise it may result in a fire or
electric shock.
Do not install this machine in an unstable location otherwise it may fall causing
damage or injury.
Always operate the machine with the upper cover in place, otherwise it may result in
injury.
Do not allow any foreign material to enter the machine while in operation.
Do not put your fingers into the machine while in operation, otherwise an injury will
result.
Do not operate this machine in overly humid or dusty conditions.
Keep the plug socket clean at all times otherwise it may cause a fire or electric shock.
When moving the machine, always disconnect the AC adapter from the wall outlet or
it may result in damage to the cord or cause a fire or electric shock.
Turn off the machine and unplug the AC adapter from the wall outlet during closing
hours or if the machine will be unused for any extended period of time.
When moving the machine, be sure to hold it with both hands and be careful not to
drop it. Dropping the machine at your feet may cause injury.
Do not operate the machine with tension on the AC adapter cord. Keep the cord loose
and untangled.
Do not bend, alter or damage the rail. Do not apply any oil. It is recommended that the
user clean the rail periodically.
Do not use any screw that is out of the specified range nor any screw that is oily or
dirty.
When picking up screws, do not exert excessive force or shock to the screws.
When opening the upper lid, please do not apply excessive force. There is a risk of
damage.

Name of Machine parts
9
4Name of Machine parts
A. Rear cover
B. Upper cover
C. Rail fixing bolt
D. Front cover
E. Holding plate
F. LED screw indicator
G. Sensor bracket attaching bolt
H. Escaper bracket installing screw
I. Power switch
J. Escaper
K. Escaper guide for the robot
L. Light-emitting sensor
M. Light-receiving sensor
N. Scooping block left and right
(moving up and down)
O. Brush
P. Passing plate
Q. Scooping chamber
R. DC jack
S. Signal line out
T. Vibration adjusting bolt (under
the machine)
U. Vibration adjusting plate fixing
bolt
V. Rail
W.Timer knob
A
B
C
D
E
F
G
I
H
K
M
L
J
p
R
S
T
Q
U
O
V
W
N

Adjustments and checks before use
10
5Adjustments and checks before use
5.1 Checking the model number of the body
Check if the machine has the parts which match the nominal diameter of the screws to be
loaded. Check the model number of the rail, escaper, escaper guide for the robot and
passing plate by referring to the following table. Each escaper is stamped with a model
number which matches with the type of screws that can be used. The escaper guide for the
robot is stamped with a model number which corresponds with the types of screws that
can be used.
Before delivery, each section of the machine is checked and adjusted with panhead screws
matching the nominal diameters of the ordered model.
Most screws may be usable in the initial status of adjustment however, if the height or
shape of the screw head is different or if the operation is regarded as abnormal, each
section must be readjusted. If this is the case, make the following checks and adjustments:
•Check the screw load amount
•Check and adjust the passing plate
•Check and adjust the holding plate
•Check and adjust the timer
•Check and adjust the brush
•Check and adjust the rail vibration
•Check and adjust the front and rear sides of the rail
Rail identification
seal
Passing plate
identification seal
Escaper guide for the
robot identification
stamp
Escaper
identification stamp

Adjustments and checks before use
11
Screw
feeder
series
Screw
feeder
model
Screw
size
Exchange
kit No.
Rail
model
No.
Escaper
model No.
Robot
escaper
guide model
No.
Passing
plate
model No.
NSRI
NSRI10
M1.0
RI10SET
RI10
SIE10
SIER10-17
SW1017
NSRI12
M1.2
RI12SET
RI12
SIE12
NSRI14
M1.4
RI14SET
RI14
SIE14
NSRI17
M1.6
M1.7
RI17SET
RI17
SIE17
NSRI20
M2.0
RI20SET
RI20
SIE20
SIER20-30
SW2030
NSRI23
M2.3
RI23SET
RI23
SIE23
NSRI26
M2.6
RI26SET
RI26
SIE26
NSRI30
M3.0
RI30SET
RI30
SIE30
NOTE:
Screws, with a different nominal diameter, can be used by replacing the rail,
escaper, passing plate and the robot escaper guide for the robot.
The parts, for replacement, are available separately.
If the rail, escaper, passing plate and robot escaper guide are replaced, screws with a
different nominal diameter can be accepted. After these parts are replaced, fine adjusting is
required. The respective adjusting procedures will be described elsewhere. Please read these
procedures.

Adjustments and checks before use
12
5.2 Basic operation
5.2.1 Amount of screws to be loaded
1. Turn the power switch ON and OFF so that the scooping block is at the lower limit
position.
2. Load screws up to approximately 2 ～3mm below the rail surface.
3. At this time, check that screws are not loaded so as to cover the upper portion of the
inclined plate.
4. Be sure to determine the screw load by observing the machine while it is in operation.
CAUTION:
An excessive amount of screws, loaded into the chamber, will have an adverse
effect on the screw alignment and transport.
The figure, shown below, indicates the maximum amount of screws to be loaded.
Use this as a guide when loading the screws.
Screws, loaded into the chamber, must not be above the rail-groove surface.
(The maximum screw load must be 2 to 3 mm below the rail-groove surface.)
Power switch
This inclined surface, on both the right
and left inclined plates, should be
visible.

Adjustments and checks before use
13
5.2.2 Loading the screws
1. Open the upper cover.
2. When the chamber plates are at their lowest position, load screws up to 2 to 3 mm below
the rail groove surface.
3. Check that the screws are not loaded so as to cover the upper portion of the inclined
plates.
CAUTION:
Do not overload the chamber with screws otherwise it may cause a malfunction
or damage the machine.
5.2.3 Turning ON the power
1. Plug the attached AC adapter into the main body and power outlet.
2. When the power switch is turned ON, the power switch lamp lights up. The scooping block
starts to move up and down. The rail starts to vibrate, and the escaper starts rotating.
3. Screws move along the rail towards the rotating escaper which selects one screw at a
time.
4. The escaper rotates and deposits the selected screw at the pickup site.
5. At this moment, the sensor detects a screw and the screw sensor LED lights up and then
the operation stops.
6. When a screw is picked up, the sensor detects this, and the sensor LED light goes off and
the machine resumes operation.
CAUTION:
Do not use any AC adapter other than the one included with this unit, as it may
cause damage.

Adjustments and checks before use
14
5.3 Checking and adjusting the brush
CAUTION:
Turn OFF the power switch before starting replacement and adjustment.
1. Load the screws into the scooping hopper, turn ON and OFF the power switch so that
screws are aligned into the rail groove.
2. Turn ON and OFF the power switch so that the brush bristles are in a horizontal position
as shown in the figure at right.
3. Check that the heads of the screws, in the rail groove, are in slight contact with the brush
bristles.
When the brush height is too high or low, this will have an adverse effect on the screw
alignment and transport.
4. If any adjustment is necessary, loosen the brush height adjusting bolt to adjust the brush
height.
5. If the plastic portion, at the front of the brush, comes into contact with the passing plate,
loosen the brush assembly mounting screw and make an adjustment either backward or
forward.
6. Operate the machine to check that the brush operation is normal.
Power
switch
Turn On and Off the power switch to put the brush
bristles in a horizontal position.
Passing plate
Brush assembly attaching
screw
Brush height adjusting bolt
The brush must not be in contact with the
passing plate when it moves.
Brush
Loaded screws
Move the brush by hand to check that the screws, in the rail groove, are in
slight contact with the brush bristles and make adjustments if necessary.

Adjustments and checks before use
15
5.4 Checking and adjusting the passing plate
CAUTION:
Turn OFF the power switch before making any checks or adjustments.
1. Check that the passing plate is adjusted to a height that permits loaded screws to pass
just within the clearance limit.
If the passing plate is too low, screws cannot pass. If the passing plate is too high, it will
hamper a smooth transport of the screws.
2. If adjustment is required, loosen the passing plate attaching bolt and adjust the height.
3. After making an adjustment, do an operational check.
NOTE:
Using the half-presses on both sides of the passing plate as guides, slide the
passing plate up or down.
The clearance should be just enough to permit the loaded screws to pass through the passing
plate.
Passing plate attaching bolt
Passing plate
Half-press (provided on both sides of
the passing plate)
Loaded screw

Adjustments and checks before use
16
5.5 Checking and adjusting the rail vibration
This machine’s rail vibration can be adjusted.
The screw transport speed differs depending on the screw type. Check the screw transport
speed. If the rail vibration hinders a smooth transport of the screws, it can be adjusted.
1. Loosen the anti-vibration screw at the rear of the machine.
2. Next, turn the vibration adjusting screw, located on the bottom of the machine, to
adjust the vibration.
When the screw is turned clockwise, as viewed from the bottom of the machine, the
vibration will increase.
When the screw is turned counterclockwise, the vibration decreases.
If the vibration is adjusted to a too large a value to increase the transport speed, the rail
will hit against the escaper and screws may fall into the machine from the clearance, failing
to unload screws normally. Adjust the vibration to a proper value that matches the loaded
screws.
For complementary information, see section Checking and adjusting the front/rear sides of the
rail page 19 .
NOTE:
After making an adjustment, be sure to tighten the vibration plate fixing
bolt.
After making an adjustment, do an operational check.

Adjustments and checks before use
17
Stronger
vibration
weaker
vibration
Vibration
adjusting bolt
Vibration adjusting
plate fixing bolt
The rail must not come in contact with the escaper.
The clearance must not be too large

Adjustments and checks before use
18
5.6 Checking and adjusting the holding plate
1. Check that the clearance between screws in the rail groove and the holding plate is about
0 to 1 mm.
If there is no clearance, a screw will be caught. If the clearance is too large, a screw pile or
screw jump will occur.
2. If any adjustment is required, loosen the holding plate attaching screw and move the
plate up or down.
3. If the holding plate makes contact with the escaper, it will affect the smooth operation
of the escaper movement.
4. After making an adjustment, check the machine operation.
Holding
plate
Loaded
screw
Escaper
The clearance between screws loaded
in the rail and the holding plate should
be about 0 to 1 mm.
Up/down
adjustment
Holding plate
attaching screw
The holding plate must not make contact
with the escaper.

Adjustments and checks before use
19
5.7 Checking and adjusting the front/rear sides of the rail
If the rail comes into contact with the escaper, or the clearance between the rail and escaper is
too large, when the machine is operated, loosen the rail fixing bolt and adjust the rail either
backward or forward.
After making an adjustment, be sure to tighten the rail fixing bolt.
If the rail hits against the escaper, the escaper will not function properly.
If the clearance between the rail and the escaper is too large, screws may fall into the machine.
After making an adjustment, try making a vibration readjustment by referring to Checking and
adjusting the rail vibration page 16.
Rail fixing bolt
Adjust the rail either backward or forward.

Adjustments and checks before use
20
5.8 Checking and adjusting the timer
The screw transport feed differs depending on screw type.
This machine can make screw unloading smooth through timer adjustment. For screws with a
low transport speed, set the timer long. For screws with a high transport speed, set the timer
short.
This machine continues its operation when no screw is found at the screw pick up site. The
machine continues operating with a screw at the pickup site but will stop, after a certain lapse
of time, if the screw is not picked up. This time lapse can be varied by adjusting the timer. After
the screw is picked up, the machine starts operating again.
Check the operation by intercepting the optical axis of the sensor.
Make an adjustment with the timer knob at the rear of the machine body (as shown in the figure
on the right).
When the timer knob is turned clockwise, as viewed from the rear side, the time becomes
shorter. When the knob is turned counterclockwise, the time becomes longer.
Make this adjustment, by using the accompanying screwdriver, within the allowable
turning range, without using excessive force.
Do an operational check with screws loaded in the scooping chamber and set the timer
properly.
Adjust the
timer with the
timer knob
When the optical axis of
the sensor is intercepted,
the timer will function to
stop the operation of the
machine.
Longer
Timer knob
Shorter