 For automatic production systems a parts
feeder to robot is one of an important element. If orientation and position of workpieces
are not accurate, automatic system will not run efficiently. Frequently, sensitive or
odd-shaped parts are not suitable for bowl feeders and vision systems will not be
economical solution. These parts should be presented by trays which are available in the
market and easy to transfer an reuse.
Hirata’s Auto Stocker solves your
tray feeding problem economically. The Auto Stocker is designed as
tray changing system to palletize or depalletize workpieces by
robot. Its accurate positioning, fast tray change time and
sufficient storage of trays meet the requirement of your automatic production system. The typical
applications for the Auto Stocker are for assembly operation,
palletizing for injection molding machines and loading/unloading
workpieces for machine tools.
If
the buffer capacity of two piles of full trays and one pile of
empty trays not enough you can attach additional buffer segments
to the basic tray 
feeder. If a pile of full trays is heavier than
15 kg in case of frequent tray change respectively maximal 25 kg
in case of once in a while it is forbitten by law that the
operator carries the tray stack.
In such cases it is possible to add on a docking station
for a cart which feeds in and out the the trays. In the full
automated version of the tray feeder you can connect the
Autostocker with an AGV.
Other
options are also available like a linking conveyor between to
trayfeeder in order to transport the empty trays from one
Autostocker to the other without access of an operator. Both
trayfeeder are served by a SCARA robot which empties and fills the
trays.
 
Special
types of the Autostocker complete our product range. E.g. the
"Trolleystocker" picks
the upper tray of a pile by motor driven linear axes of a
XZ-handling device and can move the tray to any position within
its working area. A second YZ-system can pick or place the work
piece from the tray. If the tray is finished the handling device
place the tray on the top of a second pile. The trays are feed in
and out through trolleys or cart. The trolleystocker will be used
in case of large trays and work piece.
Features
High efficiency
- The Auto Stocker with
Hirata’s SCARA or cartesian robot performs not only simple loading/unloading but also
precise assembly
- Standard tray sizes are 400 x
300 to 800 x 600 mm with max. load 100 kg
Space saving
- The vertical flow of the tray
saves the space and many trays can be stacked with optional conveyors.
Full automation
- Combination with Automatic
Guided Vehicle (AGV) completes the full automatic system.
Expansion
steps
basic unit basic unit with
integrated trolley
 
basic unit with
additional
basic unit with additional
buffer
lift and integrated trolley
| Technical data |
| Typ
AST- |
600-
50 |
600-
50-R |
700-
50 |
700-
50-R |
900-
50 |
900-
50-R |
700-
100 |
700-
100-R |
900-
100 |
900-
100-R |
| max.
weight
of tray stack |
50kg |
100kg |
| max.
weight
of one full tray |
5kg |
| max.
weight
of one empty tray stack |
30kg |
| tray
size (mm x mm) |
300
x
200 |
400
x
300 |
600
x
400 |
400
x
300 |
600
x
400 |
| tray
change time |
7s |
4s |
7s |
4s |
7s |
5s |
11s |
9s |
11s |
9s |
| power
supply |
230
VAC |
| air
pressure |
500
to 600 kPa |
| temperature
range |
+10°C
to 30°C |
|
Dimensions
| Sizes
in mm |
Typ
AST-700-(R) |
Typ
AST-900-(R) |
| TL
max. |
400 |
600 |
| TB
max. |
400 |
400 |
| B |
700 |
900 |
| LF |
593 |
593 |
| LL |
607 |
607 |
| L |
1200 |
1200 |
| X |
65 |
65 |
|
| Sizes
in mm |
Typ
AST-600L-(R) |
Typ
AST-700L-(R) |
| TL
max. |
400 |
600 |
| TB
max. |
300 |
400 |
| B |
600 |
700 |
| LF |
593 |
765 |
| LL |
607 |
785 |
| L |
1200 |
1550 |
| X |
65 |
65 |
|
|
