Full Automatic Valve Bag Packaging Line with Metal Detector / Check
Weigher / Palletizer / Stretch Wrapper
The full automatic valve bag packaging line is composed of
pneumatic tyoe full-automatic valve bag packaging machine, check
weigher, metal detector, high level palletizer/robotic palletizer,
stretch hood wrapper, etc. All the machines after the packaging
machine are customizable and optional as per the customer's
The valve bag packaging machine is an air flow bagger designed to
fill dry powdery materials including but not limited to cement,
adhesives, renders, powders and putty powders into valve bags. The
machine works on the basis of air fluidisation of the product and
differential pressure resulting in product flow into valve bags. It
can also be customized as per different customers’ special
requirements. The packing speed can reach 5-8 bags per minute (20
kg) while maintaining accuracy. The speed relates to the properties
of the material to be fill, such as specific gravity, fluidity,
granularity, humidity, etc.
Structure of Valve Bag Packaging Machine
One full automatic pneumatic type valve bag filling machine
A. Bag magazine
B. Manipulator (mechanical arm)
C. PVPE (Pneumatic Valve Packing Equipment)
Automatic Bagging Manipulator
The valve bag is sucked up by the suction cup, and the manipulator
stretch open the bag mouth to insert the bag into the material
discharge hole. The vacuum of the standard suction cup is generated
by the suction system. This system can give timely feedback of
product status to ensure that each bag is accurately placed to the
packaging machine discharge hole.
Bag Magazine (Empty bag depot)
It is big enough to keep 120 empty bags here and there is still
place more bags. This bag magazine coordinates the automatic
bag-fetching manipulator to realize fully automatic operation of
bag taking. When the present batch of bags are used up, the next
batch will be automatically replenished. The operator on site can
put the bags into bag magazine while the machine is running. So
there is no need to stop the production for supplement which will
ensure continuous packing.
Main Technical Data
|Packing range||Packing speed||Packing accuracy||Valve hole size||Valve hole length||Bag length||Bag height||Air pressure|
|10-50 kg||5-8 bags/min. (relates to many factors)||±0.5~1%||50 mm (2’) suitable, filling spout||90-165 mm||90-180 mm||300-900 mm||6-8|
Metal Detector, Check Weigher & Rejecting Unit
1. Metal detection device is mainly used to detect the metal
elements hidden inside the bags and it will alarm when metal
detected is over the set value;
2. Check weigher lets pass the bags within the preset upper and
lower weight limits and alarms when the weight of the bag is beyond
the set limits;
3. Rejecting mechanism rejects non-conforming bags according to the
alarm signal sent from metal detecting device and check weigher by
transiting them to rejected area via another conveyor.
High Level Palletizer
High level palletizer is a type of high speed full automatic
palletizing equipment, which usually used together with full
automatic packaging machine to constitute a full-automatic
packaging and palletizing production line. It is composed by
conveyor, bag shaper, layering flap, pallet magazine, pallet
conveyor and loaded pallet conveyor, etc.
Differences Between High Level Palletizer and Robotic Palletizer
Both high level palletizer and robotic palletizer are automatic
palletizing equipment used to complete the stacking of bags/boxes.
The main differences between the two are as follows:
Different application range
1. The application range of robot palletizer is wider which can be
used for the palletizing of bags, boxes, etc.; but high-position
palletizer is mainly used for the palletizing of bags.
2. Different installation and use
A. Flexibility: robot palletizer is more flexible, while
high-position palletizer takes more floor space.
B. Palletizing speed: speed of high-position palletizing can reach
1600 bags/h, while robot palletizer can reach 800 bags/h with
single gripper and 1200 bags/h with double grippers.
C. Palletizing performance: high-position palletizer palletizes
relatively more tidy and beautiful and palletized bags are not easy
to slide; while robot palletizer palletizes less tidy with position
and shape of bags less accurate, and the gripper may scratch the
D. Service life: the powders of high-position palletizer and robot
palletizer are close; the service life of high-position palletizer
is usually over 10 years, while robot palletizer usually 5-8 years.
E. Applicable regions: high-position palletizer is of wide range of
applicable regions and it can be used anywhere. In plateau regions,
the air pressure is relatively low and negative pressure high, so
the working condition for robot palletizer cannot be fulfilled.
That’s why almost only mechanical palletizers are used in China’s
F. Maintenance cost: the maintenance cost for high-position
palletizer is low, while robot palletizer is relatively higher.
Full-automated Stretch Hooding Machine
The machine realizes the overall complete wrapping and protection
of loaded pallets.Vertical stretching method is adopted, which can
reduce film consumption and the packing of which is more complete
than simply horizontal wrapping; in the same time, it’s of higher
dustproof level and waterproofness and the full pallet will be less
likely to loosen when it topples.