Saturday, March 15, 2014
Molding Machine Specifications
Molding machines are used to produce molds to make items of various shapes. They are also erred to as injection molding machines. They can either be horizontally or vertically aligned. However, most of the available injection molding machines are horizontally aligned. Vertically aligned injection molding machines find applications in areas such as insert molding. They are used for the formation of thermoset polymers, plastic injection molding or metal injection molding. Modern molding machines have been computerized to ensure consistent output and quality.
Injection Unit
Molding machines consist of injection units which come with geometrically designed gas nitride screws whose main function is to increase the plasticizing capacity. This unit consists of phosphorus/ultra bronze brushes whose purpose is to ensure perfect alignment of the mold halves as well as improve lifespan of molds. These brushes come with a lubrication arrangement. The unit also consists of a pre-suck back function and a carriage for sprue breaking. The injection unit is also capable of additional movement so as to access the nozzle and mold. This is enabled by the manually operated electro-hydraulic control. The injection unit is designed to provide high precision and to make it possible for the complex parts to be reproduced.
Locking Units
The locking units consist of movable mold platens. It is resistant to heat and corrosion which allows it to achieve an extended lifespan and it has self-lubricating pins and bushing. The locking units have a double-toggle mold clamping. The locking force can either be adjusted or automated. The material used for the manufacture of locking units make it resistant to wear.
Clamping Unit
The clamping unit consists of a multiple stroke hydraulic ejector and T slot platens for heavy duty molds. The force of the clamping unit can be adjusted to the maximum figure in accordance with the size of the mold. Hard chrome-plated tie rods are used for large diameters and they come with the clamping units. One of the main functions of the clamping unit is to provide the molding machine with the ability to open and close the mold during the molding process. It also allows for the ejection of the molded part to take place.
Hydraulic Unit
The hydraulic unit is easy to operate and also to maintain. It has valves mounted on the manifold block which can easily be accessed and allows for the minimization of any oil leaks. These valves help to save energy. The unit is equipped with an alarm for the notification of shutdown in cases when the hydraulic oil is overheated.
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