How does the blow moulding machine working

The working principle of blow moulding machine

Blow moulding machine, also called hollow blow moulding, is a rapidly developing method of plastic processing. A blow moulding machine is a machine that uses the wind blowing from the machine to blow the plastic body to a certain shape of the cavity after spraying the liquid plastic to make the product.

Blow moulding machines can be classified into three categories: extrusion blow moulding machines, injection blow moulding machines and special structure blow moulding machines.

Blow moulding machine is mainly composed of hydraulic system, extruder,mold clamping system, die head electrical control system, inflation system, automatic clamping and other parts.It is used for blowing PE and other hollow products of various materials. Such as: square barrels, round barrels, beer preservation containers, tool boxes, lampshades, etc. The machine has high performance, low energy consumption and easy operation.

At present, the high-end hollow machine on the market is a newer product developed and developed in combination with my country's national conditions. It selects high-quality hydraulic components, adopts PLC control, and adopts the most advanced FIFO storage head. On the basis of the advantages of traditional hollow aircraft, coupled with today's most advanced technology, its performance is more excellent and reliable. High efficiency and applicability have reached the level of similar products in Japan and Germany.

The tubular plastic parison obtained by extrusion or injection molding of thermoplastic resin is placed in the mold while it is still hot (or heated to a softened state). It is closely attached to the inner wall of the mold, and after cooling and demoulding, it is taken out by a manipulator to obtain various hollow products

The producing method of blown film is comparable in theory to blow moulding product, however it doesn’t use mould. From the attitude of plastic process technology classification, the molding method of blown film is typically enclosed in extrusion. The blow molding method began to supply denseness polythene vials from dry throughout war II. within the late Nineteen Fifties, with the birth of high-density polythene and therefore the development of blow molding machines, blow molding technology was wide used. the amount of hollow containers will reach thousands of liters, and a few production has adopted pc management. Plastics appropriate for blow molding embody polyester, vinyl resin, polypropene, polythene,etc., and therefore the obtained hollow containers ar wide used as industrial packaging containers. in step with the tactic of constructing the parison, blow molding may be divided into extrusion blow molding and injection blow molding. The new developed ones embody multi-layer blow molding and stretch blow molding.

After more than 20 years of research, blow molding technology has made great progress in both theory and practice. However, combined with relevant information, it is found that the research work of blow molding technology is generally concentrated in a certain period of the molding process. Process-wide analysis Numerical simulations of different process factors are rare. The blow molding process can be roughly refined into three stages: parison molding, parison inflation, and cooling and solidification, and a close correlation is formed between them. The external structural shape and wall thickness distribution of the parison affect the expansion of the parison. The surface profile and wall thickness uniformity have a direct impact: for the parison inflation stage, the compressed air and the product thickness and temperature distribution obtained after inflation will affect the cooling and solidification process of the product, thereby affecting the product performance.Based on the above discussion, it is found that it is of great practical significance to strengthen the systematic numerical simulation of the whole process of blow molding, and to ensure the continuity of the simulation process, and then to more accurately describe the entire process of product molding, and the level of blow molding technology is also will increase accordingly.

In the era of rapid social and economic development, the demand for hollow plastic products in various industries is increasing, and higher requirements are also placed on product quality, and the geometry of additional products is also becoming more and more complicated. In the process of plastic products, it has been stagnant for a long time in the production state of repeated mold trials in the past, so it is difficult to ensure that the production enterprises have a place to stand in the fierce market environment, and even have the risk of being eliminated. Based on the status quo, it is found that the related technologies of hollow blow molding in my country started relatively slowly, but developed rapidly in the later stage. Universities and major enterprises are actively participating in the research process of this technology. Diversity has a positive effect.

Weifang Huayu Plastic Machinery Co., Ltd. was founded in 2002, a manufacturer specialized in super large automatic blow moulding machines. The company intergrates the leading technique and concept at home and abroad, formed his own design, produce, sale and after-sale system in the field of large automatic blow moulding machine for one to six layers products.

The machines’ products are including any kinds of plastic tanks and drum (from 20L to 20,000L ) , tool box, car roofs, car oil tank, pellet, rice transplanter float, road block, advertising wall and so on. The machine is famous for his good quality, stable performance as well as high cost-effective. It’s not only well sold in China domestic market, but also in great demand in India, Southeast Asia, Saudi Arabic, South America, Africa etc. and gain a great reputation abroad.

Recently the corporate breaks through in multilayer accumulator technique and fill many gaps in domestic blow moulding field. All the workers within the company square measure endeavoring all their efforts in analysis and developments and to create a globe whole, giving the most effective product and repair to any or all the purchasers.