reblog

Blowing machines, for a long time, domestic manufacturers have focused their markets around the international market. However, with the rise in domestic labor costs, coupled with the downturn in the overall international market, the growth rate of exports of blow molding machines has slowed down in recent years. In contrast, the domestic market demand for hollow blow molding machine has been maintaining a good growth rate, many blow molding machine manufacturers will also shift part of the market business focus to the domestic. For the domestic blow molding machine market

However, at present, the overall domestic industrial structure began to adjust the bottle machine downstream of the plastic bottle and other products enterprises as a whole in the economically developed provinces in the east to the central and western transfer. This makes the entire domestic market demand for blow molding machines is also Plastic Pet Bottle Making Manufacturing Machine beginning to shift. However, most manufacturers are currently concentrated in a few places, which makes the central and western plastic products enterprises in the purchase of blow molding machine blowing machine after-sales service and many other matters arise. The domestic market layout of blow molding machine, I hope that the blow molding machine manufacturers can by new understanding and consideration. Automatic high-speed blowing machine blowing machine main features:

1、Bottle blowing machine adopts fully automatic conveying bottle blank control method, which can reduce personnel, reduce cost, improve quality and increase profit for enterprises.
2、Bottle blowing machine adopts imported human-machine interface control program, which has the advantages of stable performance and simple operation.
3、Imported components are used to detect the components, high precision control and fast response.
4、Adopt imported reverse osmosis heating by external line beacon tube, strong penetration, uniform heating, reflective plate width, height can be adjusted, can be suitable for different structures of the bottle blank heating.
5、With automatic alarm, automatic fault detection and judgment function.
6、The use of Germany, Japan, Taiwan, South Korea, pneumatic components, with high sensitivity, fast switching speed, low failure rate, safe and reliable remote travel.
7, air circuit design: action and blowing air into two parts, to meet the needs of blowing bottles, action different air pressure, to achieve high pressure blowing products.
8、Unique mold closing structure, strong clamping force, smooth action, fast mold opening and closing speed, easy installation of the mold, easy to replace.

Low back pressure is guaranteed to effectively extend the service life of the extrusion system and the gear box of the blow molding mold. The multi-cavity die head with reasonable distribution of each runner, the flow rate can be easily adjusted. The display is accurate and clear, the parameters are stored and adjusted more quickly. The system has a built-in 100-point blank wall thickness controller, which can effectively save raw materials with precise control and uniform product wall thickness. At the same time, the blow molding die adopts double layer extruder, the outer layer 20% new material, the inner layer 80% back material, this technology greatly saves the processing cost.

In addition, the blow molding die is driven by servo variable speed pump imported from Germany, which is energy-saving, efficient and easy to maintain. The control system adopts the imported Austrian panel, which ensures the convenience of operation and advanced technology of this machine. The extrusion system, based Jar blowing machine on the precise die runner design, adopts the unique heart-shaped runner of multi-layer co-extrusion die head, in which all types of die heads can increase the liquid level line design, the extrusion volume is high, making the product weight stable and at the same time ensure the uniform plasticization.

The die head system is equipped with foreign advanced gear box, which has smooth operation and long life, reasonable distribution of each runner in the die head, self-adjustable flow, uniform wall thickness of the mold, and quicker and more convenient color change. The blow molding mold clamping force has a solid structure, making the mold evenly stressed, thus making the finished product more perfect, without affecting the mold breakage. z After, about the optional accessories series, to meet customer needs, such as the configuration of the product robot, servo motor drive, reasonable layout to effectively reduce labor costs, automatic de-flashing, multi-layer co-extrusion die head, in-mold labeling, etc., can meet a variety of customer requirements.

About after-sales service, every blow mold model enjoys after-sales service, our technical team supports all models support 7/24 uninterrupted after-sales service, we have a strong technical team for your service support.

What is the foaming technology of large hollow blow molding machine? In the process of hollow blow molding, the raw material colloidal particles are plasticized under rated back pressure, and carbon dioxide or N2 in a supercritical state is introduced into the melting equipment in the hollow blow molding machine, so that the gas and the raw materials in the molten state are mixed. Thorough mixing results in a plastic parison for molding.

The parison enters the mold successively through the die head of the hollow blow molding machine and the extruder. During the molding process, it will be subjected to a certain pressure. Due automatic blow molding machine to thermal instability, a lot of bubbles will be generated inside the parison. These bubbles In the following cooling process, it will gradually become larger and become the inner wall of the plastic product, thereby completing the production of plastic hollow blow molding products.

Advantages of foaming technology for large-scale hollow blow molding machines: improve the dimensional accuracy of plastic blow molding products, shorten product production cycles, and improve production efficiency; reduce product residual stress, improve product warpage and deformation; reduce product surface sink marks; effective savings Raw materials, reduce product quality; reduce clamping force requirements, save manufacturing costs; produced blow-molded products are more durable and improve the life of blow-molded products.

Hot/cold cycle blow mold injection technology can greatly improve the appearance and texture of injection molded parts. The most outstanding part is the use of amorphous resin processing parts. The resin types included are: PC resin, PC/ABS compound, PC/ PBT mix. When the surface temperature of the blow mold is higher than the Tg of an amorphous resin, the resin melt will not form a skin during injection, and the melt can move freely. The result is that the melt does not freeze when it hits the surface of the blow mold, which is different from traditional injection molding techniques.

When filling the mold, a thin layer of polymer melt escapes and remains on the outer surface of the pad template, thereby increasing the gloss of the part and reducing the surface roughness. The Blow molding machine research results show that if the gloss of the part is increased by 50% to 90%, the surface roughness index -Rmax can be increased by 70% for glass fiber reinforced materials, and the index for unfilled materials can be increased by 20%. Hot/cold blow mold injection skills have a positive effect on improving weld line width and visibility. The processing comparison test of 3 different materials has been carried out in the same blow mold, and the results show that the product processed by traditional injection molding technology has a weld line width of about 6 to 13 microns on the surface. The product injection molded on the cold blow mold has no weld lines at all, and its width cannot be detected. This infinite advantage can save the secondary processing steps such as painting, which is especially suitable for some special occasions. Residual injection molding stresses in the product can cause part warpage and even shorten part life.

Traditionally injection-molded parts have high internal stresses. Carbon tetrachloride is classified as a solvent known to cause stress cracking in plastic parts. The internal stress of plastic parts processed by the hot/cold cycle blow molding mold is low, and the use of this solvent will not cause stress cracking of the parts, and then the annealing treatment process that needs to be performed before the parts are used can be omitted.

The key to the second blow mold design The factors that determine the success of the hot/cold cycle blow mold injection technology in the entire cycle processing cycle are not only related to the processing raw materials, but also related to the design style and layout of the blow mold. The time required to heat and cool the blow mold depends on the thickness of the steel. For the heat exchange cycle, it is best to minimize the thickness Z of the steel. The cavity and the core can be inlaid and assembled, which is better than the method of cutting and excavating on the formwork, so that the thickness of the formwork can be reduced. To reduce heat loss and improve thermal efficiency, these inserts can be fabricated using air gaps and barrier materials as much as possible on the cavity and core pallets.

In addition to the need to reduce the amount of steel used in the blow mold, it is also necessary to consider the impact of the replacement of cold and heat in the blow mold. The raw materials used in the production of the blow mold need to have a high thermal conductivity, such as copper beryllium alloy or other high thermal conductivity. alloy material to shorten the time required to heat and cool the surface of the blow mold. In addition, the cooling water channel is designed to be close to the surface of the blow mold, and then the response time is accelerated. However, in most cases this is limited by the geometry of the plastic product. It is very reasonable and effective to describe the method of using conformal cooling, that is, the placement of cooling water pipes is described according to the appearance of plastic parts.

In order to effectively control the process, it is necessary to install multiple thermocouples on the outer surface of the blow mold to monitor the temperature. Blow molds, injection molding machines, and heat/cold control equipment must require intelligent connection to achieve the stability of the processing process. During the initial period of the injection molding cycle, steam or superheated water circulates to heat the surface of the blow mold, so that the mold temperature is about 10°C to 30°C higher than the glass transition temperature of the resin. When the set temperature is reached, the injection molding machine obtains a signal and writes the plastic melt into the mold cavity. After the mold cavity is filled, the injection is completed, and the cooling water circulates into the blow mold to quickly cool the plastic parts to shape, and then eject the product. Equipped with a valve switch, it can alternately pass into steam or superheated water, or cooling water. After the part has cooled, the blow mold is opened and the part is ejected, and the system switch is switched back to the blow mold heating period.