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PET blow moulding machine-Rotational blowing machine
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A.Brief Introduction
the most stable two-step fully automatic high-speed rotary PET stretch-blow moulding machines(reheat).
The capacity of the products is from 0.25L to 2.0L.
It can blow pet bottles for different use: carbonated, mineral water, milk, beer, oil, hot filling tea, and other drink packing containers, which is made of plastic of crystalline type, such as PET, PP etc.
Adopted original heating and blowing technics, by which the automatic blowing machine series have achieved in powerful productivity but very reasonable price.
B.Machine Construction
B.1. Preform feeding and loading unit
The design of the recycling unit prevents the preforms from getting bound up in the unscrambler. The star wheel design of the feeding unit provides the lowest possible changeover times for switching to different perform sizes.
B.2. Linear Oven
A mandrel capable of turning 180 degrees guarantees uniform neck section during the heating. A unique oven ventilation system enables the DMK-R series blower to handle various difficult applications easily.
B.3. Preform and bottle transfer wheel
The new DMK-R series utilizes a classic double cam telescopic gripper system, this guarantees reliable movement, and easy maintenance.
B.4. Molds and Mold Carriers
The mold carrier utilizes a shell blow mold design; this reduces the changeover time for different blow molds. The Mold carriers accommodate all shell type molds from conventional blow molding machines, this saves time and expense for bottle producer. Moreover, the reliable quick locking system maximizes the performance of the mold carriers.
B.5. Blowing Station
A changeable cam for the stretching curve guider guarantees the form quality for different size bottles. Monobloc blowing valves achieve the fastest and most consistent blowing process possible. Bottle necks are protected during the blowing stage by a specially designed sealing unit.
C.Advantages of Rotary Automatic Stretch-Blow Molding Machines
C.1. High productivity: 1700pcs/cavity/hour
C.2. High eligible rate: above 99.6%
C.3. Adopting SIMENS electric controlling system; with high precision and fast speed
Stable function:
i). blowing system adopts Germany valve and cylinder, which has stable and accurate stretching speed and good product consistency
ii). heating system adopts PHILIPS original infrared lamps, which is good in thermal properties and high in durability.
iii). Germany SEW main electric motor assures stable rotating speed and stable operation.
D.4.Mold fixing structure assures fast mold fixing speed and fast mold changing speed
D.5.Automatic plastic loader and automatic recovery device.
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