In the plastic processing industry, whether it is extrusion, injection molding, calendering, hollow molding, or blown film, spinning, etc., in addition to meeting the required host, there is often a large number of auxiliary equipment to work together to complete various processing processes. . The perfectization, automation and rationalization of the auxiliary equipment for plastic processing determines the quality of the product and the capacity of the company to a certain extent.

Plastic auxiliary machines are divided according to their function, including equipment, temperature control system devices, and crushing equipment for corner scrap recovery, in the process of plastic processing, respectively.

一, the feeding system provides quality raw materials

The auxiliary processing equipment for supply systems mainly includes dry, conveying, metering, and mixing equipment.

Drying equipment for material pretreatment before molding production of volatile materials, such as ABS, polyoxymethylene (POM), polycarbonate (PC), nylon (PA), organic glass (PMMA) in polyolefin plastic In the process of processing, in order to ensure the quality of the product, it is also necessary to highly dry, such as pipe production and pipe fitting molding and crosslinked polyethylene in the random copolymerized polyethylene PP-R and the use of polyethylene raw materials for cross-linking polyethylene. The amount of water required is required. Different drying methods and drying equipment are used in accordance with the requirements of the product on the water content of the raw materials in production and processing. The oven dryer is often used for pellets such as fillers and PVC. For thermal plastics, a rotary double cone vacuum dryer is used; continuous drying tends to use a direct hopper dryer.

For the feeding system, the delivery powder is supplied with a spring tube conveying system and a Roots drum fan airborne venting system, while the particulate delivery is a vacuum absorber. The centralized supply equipment is used for production processes for scale, automated. The equipment is controlled by computer central control, and various raw materials are proportionally weighled through the metering device to enter the mixer. The hopper is equipped with a level sensor, which automatically opens or closes the storage bucket on or off the delivery conduit depending on the material. The key technology of the centralized supply system is the accurate measurement of electronic scales, which can accurately feed the desired material.

二, temperature control guarantees product quality

During the plastic processing, the heating equipment mainly refers to a temperature heating controller for a cartridge mold and a delayed roll such as extrusion, injection molding, calendering, etc., which is generally replaced by a complex steam heating method in a heat transfer oil.

The mold temperature cooler is mainly used in injection molding mold temperature cooling. Generally, there is a cooling water passage in the mold design. The refrigerator is divided into air-cooled and water-cooled, the air-cooled light, but the heat exchange capacity is low, the water-cooled heat transfer is large, and the heat exchange is good, widely used.

三, recycling reduces production costs

The proportion of plastic machining medial scraps is about 5% to 20% of the total production volume, which can be said that recycling edge scrap determines the living life of the company to a certain extent. Plastic processing companies have more and more attention to this. At present, more plastic pulverizations are applied to a crushing equipment suitable for hard products, small volume products; crushing equipment for recycling granulation for soft plastic foam; for pipe, profiles Crusher of the granulated granulation; the granule for the recovery of the waste wire. On the plastic recovery equipment, it is now moving towards low noise, easy to operate, and collects the development direction of continuous tubular delivery.

For the continuous pulverization of large parts, in order to avoid the plastic parts for a long time to flip cut, the heat generates heat makes the plastic to the elastomeric state, it is difficult to pulverize, and the crushing machine housing has a water-cooled jacket. The equipment guarantees the continuous operation and high efficiency of large plastic parts.