 Parts feeding to the robot is an important element of automatic production systems. If orientation and position of the workpiece is not accurate, automatic systems will not run efficiently. Sensitive or odd-shaped parts are frequently not suitable for bowl feeders, and vision systems are sometimes not an economical solution. These kind of parts should be presented on trays which are readily available in the market, and easy to transfer and reuse.
Hirata’s Auto Stocker is an economical solution to your parts feeding problem. The Auto Stocker is designed as
tray changing system to robotically palletize or depalletize workpieces. Its accurate positioning, fast tray change time and
ample tray storage will meet your automated prodcution system requirements.
 Typical
applications include assembly operations,
injection molding machine palletizing, and the loading and unloading of
workpieces for machine tools.
If
additional buffer capacity beyond handling two full and one empty stack is required, additional buffer segments are attachable. In cases where heavy stack payload precludes safe operator handling of the stacks,
to the basic tray 
it is possible to add on a docking station for a cart that feeds the trays in and out. Functionality can be enhanced further by connecting the Auto Stocker to an AGV.
Other options are available to link Auto Stockers with conveyor between tray feeders to allow for operation without an operator. Both tray feeders are 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 |
|
|
