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9 points for attention in roll molding operation

source:Foshan Rotomolding|Rotational Molding Processing|Rotational Molding-Shunde Zhongze Mould date:2020-10-21 14:08



④ Lift the mold to the rotary molding rack, tighten the lead screw and fastening nut, then open the liquefied gas to start heating the internal mold until the plastic can melt (definition: the change process of material from solid to liquid), start the motor to send the frame into the oven. Close the oven door. Start heating.

⑤ During heating, the burner shall be ignited first, and then the draughtfan shall be turned on. The rotation number of the main shaft (SH è D ì ng) is set to 6 and the rotation of the auxiliary shaft is set to 12. The operator can make reasonable adjustment according to the thickness of the product. The forward and reverse directions should be kept for one-half of the time. After 150 degrees, the reverse direction should be conducted in 5 minutes. During the operation period, attention should be paid to observe the current (electron flow), which should not exceed the rated value. The main shaft is 7a and the secondary shaft is 10A.

⑥ When the temperature reaches the set (SH è D ì ng) temperature of 290-300 ℃, turn off the burner and operate in the heat preservation box for 5 minutes. When the temperature drops to about 200 ℃, open the door to discharge the furnace.


⑦ The air cooling time is 20 minutes, the temperature is below 80 degrees, the water cooling time is 5 minutes, and the temperature is 40 degrees. After the water is dried, the mold can be hung down (Title: the mother of industry), and the mold can be started.

⑧ Attention should be paid to protect the products from being damaged by sharp objects. Mold (Title: mother of industry) should be cleaned every time (liquidate) to ensure that the mold is closed tightly, and the plane of the product is downward when parking to prevent product deformation.

⑨ The transmission part of rotational molding machine into the oven should be lubricated with high temperature lubricating oil every time, and the transmission part outside the oven should be lubricated with ordinary lubricating oil once a day. If it is loose, it should be tightened and adjusted in time. Rotational molding, also known as rotational molding, rotational molding and rotary molding, is a hollow molding method of thermoplastic.