BQS (Blister quickly through servo ) Machine is a part of pharmaceutical packing where it helps in the aggregation of unit dose into a form of Blister is also known for primary Packing. BQS is a continuous motion technology enabled by flat sealing, and flat forming in a continuous motion to achieve precision, power, speed, and position control.
Change Part of the BQS machine
- Feeding channel
- Guide track
- Heating plate
- Forming plate
- Sealing plate
- Perforation tools
- Embossing tools
- Indexing roller
- Printing units
- Gears units
- Punching and cutting units
Principle of BQS machine:
The principle of the BQS machine is flat forming flat sealing with a continuous motion for high speed.
Types of servo motors in BQS
- Feeding servo
- Printing servo
- Punching servo
- Pulling servo
- Main cam servo
What is meant by servo?
A servo is an electromagnetic device that helps cover electricity into a precisely controlled motion by the use of a negative feedback mechanism.
Importance of servo motor in Blister Quickly Through Servo machine
- It helps in increasing productivity or output.
- It reduces the change over time and is easy to dismantle.
BQS Parameters and specifications:
Forming depth/ die depth– up to 12mm in the case of PVC/PVDC thermoforming and up to 9mm in the case of cold forming.
Forming cycle: 40 cycles per minute for thermoforming and 35 cycles per minute for cold forming.
Punching cycle: Maximum 180 cycles per minute
No. of tracks: it may be single, double, triple, or four-track.
Forming Area: Maximum 240mm in widthx180 mm in advance. it may differ from make to make.
Pressure and chilled water used in the Machine:
- Cavity-forming station- 6 Bar
- Heating station, cooling station, and cooling plate- 4 Bar
- The capacity of the Cylinder – up to 10 Bar
- Pvc foil break cylinder – 2 to 3 Bar
- Punching station air blowing for cleaning – 3 Bar
- Alu- Alu flap cylinder – 3 Bar
- Blister Pickup wall – 1 to 1.5 Bar
- Chiller water used for cooling in BQS for thermoforming is 8 -10°C in the case of PVDC and 18 – 20°C in the case of Pvc.
Related Post: Pharma packing questions for the interview
BQS parts and their Roles:
Guide roller: it helps in moving the web upwards. the knob is provided to adjust it.
Spring assembly: these are pressure-based springs to provide pressure to get embossing quality.
Indexing roller: it consists of a web jam-checking sensor. indexing roller pushes the web forwards in parallel motion.
Punching station: punch the blister to get the edge to edge to the cutting of the blister.
Pick up station: blister is picked up by pickup assembly after cutting of blister by punching units.
Pickup angle roles in the Blister machine: they drop the rejected blisters at 45°, good blister at 90°, and overflow blister at 180°.
Cylinder for forming: it is a pneumatically operated cylinder to develop forming force on foil. the minimum air pressure required is 6 Bar.
Overprinting unit: it is a servo drive unit to ensure precise control of printing quality.
Vacuum Required in blister packing Machine:
Blister Pick up -26 in mm Hg
Lidding foil splicing sensor -26 in mm Hg
Forming foil splicing sensor -26 in mm Hg