Page 44 - FoodFocusThailand No.167 February 2020

SMART PRODUCTION

ระหว่่างการผลิิตเป็็นจำำานว่นมาก ดัังนั�น การเป็ิดัใช้้ฟัังก์ช้ันน้�ให้เกิดัป็ระโยช้น์
สููงสูุดั คว่รติดัตั�งเคร่�องช้ั�งบนสูายพานให้ใกลิ้กับเคร่�องบรรจำุมากที่้�สูุดั
หลิังจำากนั�นเคร่�องบรรจำุก็จำะกลิับมาที่ำางานไดั้อย่างม้ป็ระสูิที่ธิิภาพ
ตามมาตรฐานที่้�ต้องการเช้่นเดัิม
การเลิ่อกใช้้ฟัังก์ช้ัน “Feedback Control” จำะช้่ว่ยให้ผู้ผลิิตลิดัคว่าม-
สููญเสู้ยที่้�เกิดัจำากการที่ำางานผิดัป็กติของเคร่�องบรรจำุไดั้อย่างรว่ดัเร็ว่
อ้กที่ั�งยังสูามารถช้่ว่ยเพิ�มกำาลิังการผลิิต (Productivity) เน่�องจำากเป็็น
ระบบการที่ำางานอัตโนมัติที่้�ใช้้เว่ลิาในการป็รับตั�งน้อยแลิะสูามารถที่ำาไดั้
ที่ันที่้ แลิะลิดัคว่ามผิดัพลิาดัที่้�อาจำเกิดัจำากการที่ำางานของพนักงาน
ไดั้อ้กดั้ว่ย

Other factors that will affect the
effectiveness and accuracy of a dynamic
checkweigher are, but not limited to,
vibration, air movement, room temperature,
inadequate cleaning methods, and product
fragments scattered along the conveyor
belts. Thus, apart from acquiring a
dynamic checkweigher with corresponding
effectiveness and accuracy, proper
maintenance is also a vital factor.
The technological features of a
modern-day dynamic checkweigher can
help detect any irregularities if, for example,
the product weight is found to continuously
increase or decrease. Upon such
detection, signals will then be sent from
Weighing & Packaging the checkweigher to the corresponding
filling machine so that a proper weight
adjustment can be made. This automatic
Technology process is called “Feedback Control”.
The checkweigher will constantly
measure the product weight and make
necessary calculations to check for any
possible irregular tendencies. If the
To ensure that a final consumer product have the same net weight as the product weight is found to continuously
measurement shown in the production line, it is necessary to rely on a tool increase or decrease, the device will send
which can confirm that every goods meets its defined weight standard. signals to the filling machine to make a
When the manufacturing process nears its maximum capacity, it is difficult proper adjustment. During the signal
transmission, however, the ongoing weight
for operation staff to individually check the weight of each product. A irregularities may continue to occur in the
dynamic checkweigher, therefore, is a good alternative that can help with filling process, thus causing further product
the final quality control before the products reach the consumers. Such giveaway. In order to minimize this issue,
device can reduce product giveaway as well. the checkweigher should be installed as
near the filling machines as possible.
After adjustment, the filling machine
will then resume its regular and effective
functions as per the established standards.
What are the Effectiveness and Accuracy Factors of a Dynamic The “Feedback Control” function helps
Checkweigher? manufacturers to quickly minimize losses
The heart of a checkweigher is a load cell. There are currently two types of load cell technology: stemming from the malfunction of a filling
strain gauge and electromagnetic force restoration (EMFR), which are different in terms of machine. The productivity can also be
weighing accuracy. Therefore, one should clearly specify the desired accuracy rate in order to improved thanks to the automatic functions
get a dynamic checkweigher that can fully meet such specifications and reap the full benefits that require less time to install, can start
from the chosen machine. operating immediately, and help reduce
human errors.
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